using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using NPOI.SS.Util;
using NPOI.XSSF.UserModel;
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.OleDb;
using System.IO;
using System.Linq;
using System.Text;

namespace BLL.Common
{
    public class NPOIExcel
    {
        internal IWorkbook Book { get; set; }

        private int sheetID = 0;
        /// <summary>
        /// 当前活动的SheetID，所有的操作将指向这个Sheet
        /// </summary>
        public int ActiveSheetID
        {
            get
            {
                return sheetID;
            }
            set
            {
                sheetID = value;
            }
        }

        /// <summary>
        /// 当前活动的SheetName，所有的操作将指向这个Sheet
        /// </summary>
        public String ActiveSheetName
        {
            get
            {
                return Book.GetSheetAt(sheetID).SheetName;
            }
            set
            {
                sheetID = Book.GetSheetIndex(value);
            }
        }
        /// <summary>
        /// 当前活动的Sheet，所有的操作将指向这个Sheet
        /// </summary>
        public ISheet ActiveSheet
        {
            get
            {
                return Book.GetSheetAt(sheetID);
            }
        }

        /// <summary>
        /// 第一行非空行的行号
        /// </summary>
        public int FirstRowNum
        {
            get
            {
                return Book.GetSheetAt(sheetID).FirstRowNum;
            }
        }

        /// <summary>
        /// 最后一行非空行的行号
        /// </summary>
        public int LastRostNum
        {
            get
            {
                return Book.GetSheetAt(sheetID).LastRowNum;
            }
        }

        /// <summary>
        /// 无模板的Excel生成或操作
        /// </summary>
        public NPOIExcel()
        {
            Book = new HSSFWorkbook();
            Book.CreateSheet();
        }

        public NPOIExcel(Stream fileStream, String fileName)
        {
            if (fileName.Substring(fileName.LastIndexOf(".")) == ".xls")
            {
                Book = new HSSFWorkbook(fileStream);
            }
            else
            {
                Book = new XSSFWorkbook(fileStream);
            }
        }
        /// <summary>
        /// 带模板或数据的Excel生成或操作
        /// </summary>
        /// <param name="fileName"></param>
        public NPOIExcel(String fileName)
        {
            Book = CreateBook(fileName);
        }

        /// <summary>
        /// 创建Excel Book
        /// </summary>
        /// <param name="fileName">模板文件名</param>
        /// <returns></returns>
        private IWorkbook CreateBook(String fileName)
        {
            FileInfo file = new FileInfo(fileName);
            if (!file.Exists)
            {
                File.Create(fileName).Close();
            }
            FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
            IWorkbook book;
            if (file.Extension == ".xls")
            {
                book = new HSSFWorkbook(fs);
            }
            else
            {
                book = new XSSFWorkbook(fs);
            }
            fs.Close();
            if (book.NumberOfSheets == 0)
            {
                book.CreateSheet();
            }
            return book;
        }

        /// <summary>
        /// 新建Sheet
        /// </summary>
        /// <returns>新建Sheet</returns>
        public ISheet CreateSheet()
        {
            return Book.CreateSheet();
        }

        /// <summary>
        /// 新建Sheet
        /// </summary>
        /// <param name="sheetName">新建Sheet的名称</param>
        /// <returns>新建Sheet</returns>
        public ISheet CreateSheet(String sheetName)
        {
            return Book.CreateSheet(sheetName);
        }

        /// <summary>
        /// 设置行高
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="rowIndex">行号</param>
        /// <param name="height">高度</param>
        public void SetRowHeight(int rowIndex, float height)
        {
            IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
            if (row == null)
            {
                row = Book.GetSheetAt(sheetID).CreateRow(rowIndex);
            }
            row.Height = (short)(height * 20);
        }

        /// <summary>
        /// 设置列宽
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="columnIndex">列号</param>
        /// <param name="width">宽度</param>
        public void SetColumnWidth(int columnIndex, short width)
        {
            Book.GetSheetAt(sheetID).SetColumnWidth(columnIndex, width * 256);
        }

        /// <summary>
        /// 获取或设置默认行高
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        public short DefaultRowHeight
        {
            get
            {
                return (short)(Book.GetSheetAt(sheetID).DefaultRowHeight / 20);
            }
            set
            {
                Book.GetSheetAt(sheetID).DefaultRowHeight = (short)(value * 20);

            }
        }

        /// <summary>
        /// 获取或设置默认列宽
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        public int DefaultColWidth
        {
            get
            {
                return Book.GetSheetAt(sheetID).DefaultColumnWidth;
            }
            set
            {
                Book.GetSheetAt(sheetID).DefaultColumnWidth = value;
            }
        }

        /// <summary>
        /// 某一列的列宽自动调整大小
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="colIndex">列号</param>
        public void AutoColWidth(int colIndex)
        {
            Book.GetSheetAt(sheetID).AutoSizeColumn(colIndex, true);
        }

        /// <summary>
        /// 隐藏一行
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="rowIndex">行号</param>
        public void HiddenRow(int rowIndex)
        {
            IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
            if (row == null)
            {
                row = Book.GetSheetAt(sheetID).CreateRow(rowIndex);
            }
            row.ZeroHeight = true;
        }

        /// <summary>
        /// 删除一行
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="rowIndex">行号</param>
        public void RemoveRow(int rowIndex)
        {
            IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
            if (row != null)
            {
                ActiveSheet.RemoveRow(row);
            }
        }

        /// <summary>
        /// 读取单元格的值
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="rowIndex">行号</param>
        /// <param name="columnIndex">列号</param>
        /// <returns>单元格的值</returns>
        public object ReadValue(int rowIndex, int columnIndex, bool? isDateTime = null)
        {
            try
            {
                ICell cell = Book.GetSheetAt(sheetID).GetRow(rowIndex).GetCell(columnIndex);
                short df = cell.CellStyle.DataFormat;

                //return cell.ToString();
                switch (cell.CellType)
                {
                    case CellType.Blank:
                        return null;
                    case CellType.Boolean:
                        return cell.BooleanCellValue;
                    case CellType.Error:
                        throw new Exception("Cell Value Error");
                    case CellType.Formula:
                        {
                            switch (cell.CachedFormulaResultType)
                            {
                                case CellType.Blank:
                                    return "";
                                case CellType.Boolean:
                                    return cell.BooleanCellValue;
                                case CellType.Error:
                                    throw new Exception("Cell Value Error");
                                case CellType.Formula:
                                    throw new Exception("The Formula of this cell is too complex！");
                                case CellType.Numeric:
                                    if (isDateTime == null)
                                    {
                                        if (DateUtil.IsCellDateFormatted(cell))
                                        {
                                            return cell.DateCellValue;
                                        }
                                        else
                                        {
                                            return cell.NumericCellValue;
                                        }
                                    }
                                    else if (isDateTime == true)
                                    {
                                        return cell.DateCellValue;
                                    }
                                    else
                                    {
                                        return cell.NumericCellValue;
                                    }
                                case CellType.String:
                                    return cell.StringCellValue;
                                case CellType.Unknown:
                                    return cell.ToString();
                                default:
                                    return cell.ToString();
                            }
                        }
                    case CellType.Numeric:
                        {
                            if (isDateTime == null)
                            {
                                if (DateUtil.IsCellDateFormatted(cell))
                                {
                                    return cell.DateCellValue;
                                }
                                else
                                {
                                    return cell.NumericCellValue;
                                }
                            }
                            else if (isDateTime == true)
                            {
                                return cell.DateCellValue;
                            }
                            else
                            {
                                return cell.NumericCellValue;
                            }
                        }
                    case CellType.String:
                        return cell.StringCellValue;
                    case CellType.Unknown:
                        return cell.ToString();
                    default:
                        return cell.ToString();
                }
            }
            catch (System.NullReferenceException)
            {
                return null;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 设置单元格的值
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="rowIndex">行号</param>
        /// <param name="columnIndex">列号</param>
        /// <param name="value">单元格的值</param>
        public void SetValue(int rowIndex, int columnIndex, object value)
        {
            SetValue(rowIndex, columnIndex, value, false);
        }

        /// <summary>
        /// 设置单元格的值
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="rowIndex">行号</param>
        /// <param name="columnIndex">列号</param>
        /// <param name="value">单元格的值</param>
        /// <param name="isFormula">是否是公式</param>
        public void SetValue(int rowIndex, int columnIndex, object value, bool isFormula)
        {
            IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
            if (row == null)
            {
                row = Book.GetSheetAt(sheetID).CreateRow(rowIndex);
            }
            ICell cell = row.GetCell(columnIndex);
            if (cell == null)
            {
                cell = row.CreateCell(columnIndex);
            }
            if (value == null)
            {
                cell.SetCellValue("");
            }
            if (isFormula)
            {
                cell.SetCellFormula(value.ToString());
            }
            else
            {
                if (value is short)
                {
                    cell.SetCellValue((short)value);
                }
                else if (value is int)
                {
                    cell.SetCellValue((int)value);
                }
                else if (value is long)
                {
                    cell.SetCellValue((long)value);
                }
                else if (value is float)
                {
                    cell.SetCellValue((float)value);
                }
                else if (value is double)
                {
                    cell.SetCellValue((double)value);
                }
                else if (value is bool)
                {
                    cell.SetCellValue((bool)value);
                }
                else if (value is DateTime)
                {
                    cell.SetCellValue((DateTime)value);
                }
                else if (value == null)
                {
                }
                else
                {
                    cell.SetCellValue(value.ToString());
                }
            }

        }

        /// <summary>
        /// 设置一个区域内的单元格的值范围
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="startRowIndex">开始行</param>
        /// <param name="EndRowIndex">结束行</param>
        /// <param name="startColInex">开始列</param>
        /// <param name="endColIndex">结束列</param>
        /// <param name="type">验证类型</param>
        /// <param name="operatorType">验证方式</param>
        /// <param name="minValue">最小值</param>
        /// <param name="maxValue">最大值</param>
        public void SetValueRange(int startRowIndex, int EndRowIndex, int startColInex, int endColIndex, NPOIDataType type, OperatorTypes operatorType, String minValue, String maxValue)
        {
            SetValueRange(startRowIndex, EndRowIndex, startColInex, endColIndex, type, operatorType, minValue, maxValue, "", "");
        }

        /// <summary>
        /// 设置一个区域内的单元格的值范围
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="startRowIndex">开始行</param>
        /// <param name="EndRowIndex">结束行</param>
        /// <param name="startColInex">开始列</param>
        /// <param name="endColIndex">结束列</param>
        /// <param name="type">验证类型</param>
        /// <param name="operatorType">验证方式</param>
        /// <param name="minValue">最小值</param>
        /// <param name="maxValue">最大值</param>
        /// <param name="formate">数据格式</param>
        public void SetValueRange(int startRowIndex, int EndRowIndex, int startColInex, int endColIndex, NPOIDataType type, OperatorTypes operatorType, String minValue, String maxValue, String formate)
        {
            SetValueRange(startRowIndex, EndRowIndex, startColInex, endColIndex, type, operatorType, minValue, maxValue, formate, "");
        }

        /// <summary>
        /// 设置一个区域内的单元格的值范围
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="startRowIndex">开始行</param>
        /// <param name="EndRowIndex">结束行</param>
        /// <param name="startColInex">开始列</param>
        /// <param name="endColIndex">结束列</param>
        /// <param name="type">验证类型</param>
        /// <param name="operatorType">验证方式</param>
        /// <param name="minValue">最小值</param>
        /// <param name="maxValue">最大值</param>
        /// <param name="formate">数据格式</param>
        /// <param name="AlertMassage">报错信息</param>
        public void SetValueRange(int startRowIndex, int EndRowIndex, int startColInex, int endColIndex, NPOIDataType type, OperatorTypes operatorType, String minValue, String maxValue, String formate, String AlertMassage)
        {
            CellRangeAddressList regions = new CellRangeAddressList(startRowIndex, EndRowIndex, startColInex, endColIndex);
            DVConstraint constraint = DVConstraint.CreateNumericConstraint(ValidationType.ANY, 0, null, null);
            switch (type)
            {
                case NPOIDataType.Integer:
                    constraint = DVConstraint.CreateNumericConstraint(ValidationType.INTEGER, (int)operatorType, minValue, maxValue);
                    break;
                case NPOIDataType.Float:
                    constraint = DVConstraint.CreateNumericConstraint(ValidationType.DECIMAL, (int)operatorType, minValue, maxValue);
                    break;
                case NPOIDataType.Date:
                    if (formate == "")
                    {
                        formate = "yyyy/MM/dd";
                    }
                    constraint = DVConstraint.CreateDateConstraint((int)operatorType, minValue, maxValue, formate);
                    break;
                case NPOIDataType.Time:
                    constraint = DVConstraint.CreateTimeConstraint((int)operatorType, minValue, maxValue);
                    break;
                case NPOIDataType.TextLength:
                    constraint = DVConstraint.CreateNumericConstraint(ValidationType.TEXT_LENGTH, (int)operatorType, minValue, maxValue);
                    break;
                default:
                    break;
            }

            HSSFDataValidation dataValidate1 = new HSSFDataValidation(regions, constraint);
            if (!String.IsNullOrEmpty(AlertMassage))
            {
                dataValidate1.CreateErrorBox("Error", AlertMassage);
            }
            ActiveSheet.AddValidationData(dataValidate1);

        }

        /// <summary>
        /// 设置一个区域内的单元格的值范围
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="startRowIndex">开始行</param>
        /// <param name="EndRowIndex">结束行</param>
        /// <param name="startColInex">开始列</param>
        /// <param name="endColIndex">结束列</param>
        /// <param name="dataRange">值系列</param>
        public void SetValueRange(int startRowIndex, int EndRowIndex, int startColInex, int endColIndex, String[] dataRange)
        {

            SetValueRange(startRowIndex, EndRowIndex, startColInex, endColIndex, dataRange, "");
        }

        /// <summary>
        /// 设置一个区域内的单元格的值范围
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="startRowIndex">开始行</param>
        /// <param name="EndRowIndex">结束行</param>
        /// <param name="startColInex">开始列</param>
        /// <param name="endColIndex">结束列</param>
        /// <param name="dataRange">值系列</param>
        /// <param name="alertMassage">报错信息</param>
        public void SetValueRange(int startRowIndex, int endRowIndex, int startColInex, int endColIndex, String[] dataRange, String alertMassage)
        {
            ISheetConditionalFormatting hscf = ActiveSheet.SheetConditionalFormatting;
            CellRangeAddress[] regions = {
                new CellRangeAddress(startRowIndex, endRowIndex,startColInex,endColIndex)
            };

            CellRangeAddressList rangeList = new CellRangeAddressList();
            rangeList.AddCellRangeAddress(new CellRangeAddress(startRowIndex, endRowIndex, startColInex, endColIndex));
            DVConstraint dvconstraint = DVConstraint.CreateExplicitListConstraint(dataRange);
            HSSFDataValidation dataValidation = new HSSFDataValidation(rangeList, dvconstraint);

            if (!String.IsNullOrEmpty(alertMassage))
            {
                dataValidation.CreateErrorBox("Error", alertMassage);
            }

            ActiveSheet.AddValidationData(dataValidation);
        }

        /// <summary>
        /// 设置一个区域内的单元格的值范围
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="startRowIndex">开始行</param>
        /// <param name="EndRowIndex">结束行</param>
        /// <param name="startColInex">开始列</param>
        /// <param name="endColIndex">结束列</param>
        /// <param name="Formula">计算公式</param>
        /// <param name="alertMassage">报错信息</param>
        public void SetValueRange(int startRowIndex, int endRowIndex, int startColInex, int endColIndex, String Formula, String alertMassage)
        {
            ISheetConditionalFormatting hscf = ActiveSheet.SheetConditionalFormatting;
            CellRangeAddress[] regions = {
                new CellRangeAddress(startRowIndex, endRowIndex,startColInex,endColIndex)
            };

            CellRangeAddressList rangeList = new CellRangeAddressList();
            rangeList.AddCellRangeAddress(new CellRangeAddress(startRowIndex, endRowIndex, startColInex, endColIndex));
            DVConstraint dvconstraint = DVConstraint.CreateFormulaListConstraint(Formula);
            HSSFDataValidation dataValidation = new HSSFDataValidation(rangeList, dvconstraint);

            if (!String.IsNullOrEmpty(alertMassage))
            {
                dataValidation.CreateErrorBox("Error", alertMassage);
            }

            ActiveSheet.AddValidationData(dataValidation);
        }

        /// <summary>
        /// 设置一个区域内的单元格的值范围
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="startRowIndex">开始行</param>
        /// <param name="EndRowIndex">结束行</param>
        /// <param name="startColInex">开始列</param>
        /// <param name="endColIndex">结束列</param>
        /// <param name="Formula">计算公式</param>
        public void SetValueRange(int startRowIndex, int endRowIndex, int startColInex, int endColIndex, String Formula)
        {
            SetValueRange(startRowIndex, endColIndex, startRowIndex, endColIndex, Formula, "");
        }

        /// <summary>
        /// 生成单元格样式
        /// </summary>
        /// <returns>与当前Excel相关的单元格样式</returns>
        public ICellStyle CreateCellStyle()
        {
            return Book.CreateCellStyle();
        }

        /// <summary>
        /// 生成字体
        /// </summary>
        /// <returns>与当前Excel相关的字体</returns>
        public IFont CreateFont()
        {
            return Book.CreateFont();
        }

        /// <summary>
        /// 设置单元格样式
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="rowIndex">行号</param>
        /// <param name="columnIndex">列号</param>
        /// <param name="style">样式</param>
        public void SetStyle(int rowIndex, int columnIndex, ICellStyle style)
        {
            IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
            if (row == null)
            {
                row = Book.GetSheetAt(sheetID).CreateRow(rowIndex);
            }
            ICell cell = row.GetCell(columnIndex);
            if (cell == null)
            {
                cell = row.CreateCell(columnIndex);
            }
            cell.CellStyle = style;
        }

        /// <summary>
        /// 合并单元格
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="startRowIndex">开始行号</param>
        /// <param name="startColumnIndex">开始列号</param>
        /// <param name="endRowIndex">结束行号</param>
        /// <param name="endColumnIndex">结束列号</param>
        public void MergeCells(int startRowIndex, int startColumnIndex, int endRowIndex, int endColumnIndex)
        {
            int Index = Book.GetSheetAt(sheetID).AddMergedRegion(new CellRangeAddress(startRowIndex, endRowIndex, startColumnIndex, endColumnIndex));
        }

        /// <summary>
        /// 拆分单元格
        /// 注1：只对当前ActiveSheet有效
        /// 注2：只有合并的单元格才能拆分
        /// </summary>
        /// <param name="startRowIndex">开始行号</param>
        /// <param name="startColumnIndex">开始列号</param>
        public void UnMergeCells(int startRowIndex, int startColumnIndex)
        {
            int merges = Book.GetSheetAt(sheetID).NumMergedRegions;
            CellRangeAddress merge;
            for (int i = 0; i < merges; i++)
            {
                merge = Book.GetSheetAt(sheetID).GetMergedRegion(i);
                if (merge.FirstRow == startRowIndex && merge.FirstColumn == startColumnIndex)
                {
                    Book.GetSheetAt(sheetID).RemoveMergedRegion(i);
                    break;
                }
            }
        }

        /// <summary>
        /// 保存到文件
        /// 注：有模板的，文件扩展名与模板一样；没有模板的，文件扩展名为“.xls”；
        /// </summary>
        /// <param name="fileName">保存文件名</param>
        public void Save(String fileName)
        {
            FileStream file = new FileStream(fileName, FileMode.Create);
            Book.Write(file);
            file.Close();
        }

        /// <summary>
        /// 保存到流
        /// 注：保存或下载时，有模板的，文件扩展名与模板一样；没有模板的，文件扩展名为“.xls”；
        /// </summary>
        /// <returns>内存流</returns>
        public MemoryStream Save()
        {
            MemoryStream ms = new MemoryStream();
            Book.Write(ms);
            return ms;
        }

        /// <summary>
        /// 把Excel读成DataSet
        /// 注：必须是正规表格式
        /// </summary>
        /// <returns>读出的Excel</returns>
        public DataSet ReadAsDataSet()
        {
            DataSet rtn = new DataSet();
            for (int i = 0; i < SheetCount; i++)
            {
                ISheet sheet = Book.GetSheetAt(i);
                rtn.Tables.Add(GetDataTableBySheet(sheet));
            }
            return rtn;
        }

        private DataTable GetDataTableBySheet(ISheet sheet)
        {
            DataTable dt = new DataTable(sheet.SheetName);
            int maxCols = 0;
            object value;
            while ((value = ReadValue(sheet, 0, maxCols)) != null)
            {
                dt.Columns.Add(value.ToString());
                maxCols++;
            }

            int row = 1;

            bool emptyRow = false;
            int emptyRowCount = 0;
            while (emptyRowCount < 10)
            {
                emptyRow = true;
                DataRow dr = dt.NewRow();
                for (int i = 0; i < maxCols; i++)
                {
                    value = ReadValue(sheet, row, i);
                    if (value != null)
                    {
                        dr[i] = value;
                        emptyRow = false;
                    }
                }
                if (!emptyRow)
                {
                    dt.Rows.Add(dr);
                    emptyRowCount = 0;
                }
                else
                {
                    emptyRowCount++;
                }
                row++;
            }

            return dt;
        }

        /// <summary>
        /// 根据SheetName导出数据为DataTable
        /// </summary>
        /// <param name="sheetName">Sheet名称</param>
        /// <returns></returns>
        public DataTable GetDataTableBySheet(String sheetName)
        {

            ISheet sheet = Book.GetSheet(sheetName);
            if (sheet != null)
            {
                return GetDataTableBySheet(sheet);
            }
            return null;

        }

        /// <summary>
        /// 根据SheetName导出数据为DataTable
        /// </summary>
        /// <param name="sheetIndex">Sheet编号</param>
        /// <returns></returns>
        public DataTable GetDataTableBySheet(int sheetIndex)
        {

            ISheet sheet = Book.GetSheetAt(sheetIndex);
            if (sheet != null)
            {
                return GetDataTableBySheet(sheet);
            }
            return null;

        }

        /// <summary>
        /// 写入表格
        /// </summary>
        /// <param name="Data">表格数据</param>
        /// <param name="col">写入的起始列</param>
        /// <param name="row">写入的起始行</param>
        /// <param name="titleColor">标题颜色</param>
        /// <param name="fullBorder">是否需要四周边框</param>
        public void WriteDataTable(DataTable Data, int col = 1, int row = 1, short? titleColor = null, bool fullBorder = true)
        {
            if (Data == null)
            {
                return;
            }

            var titleStyle = CreateCellStyle();
            var rowStyle = CreateCellStyle();
            if (titleColor != null)
                titleStyle.FillForegroundColor = titleColor.Value;

            titleStyle.FillPattern = FillPattern.SolidForeground;
            if (fullBorder)
            {
                titleStyle.BorderBottom = BorderStyle.Thin;
                titleStyle.BorderLeft = BorderStyle.Thin;
                titleStyle.BorderRight = BorderStyle.Thin;
                titleStyle.BorderTop = BorderStyle.Thin;
                titleStyle.BottomBorderColor = NPOIColor.BLACK;
                titleStyle.LeftBorderColor = NPOIColor.BLACK;
                titleStyle.RightBorderColor = NPOIColor.BLACK;
                titleStyle.TopBorderColor = NPOIColor.BLACK;
                rowStyle.BorderBottom = BorderStyle.Thin;
                rowStyle.BorderLeft = BorderStyle.Thin;
                rowStyle.BorderRight = BorderStyle.Thin;
                rowStyle.BorderTop = BorderStyle.Thin;
                rowStyle.BottomBorderColor = NPOIColor.BLACK;
                rowStyle.LeftBorderColor = NPOIColor.BLACK;
                rowStyle.RightBorderColor = NPOIColor.BLACK;
                rowStyle.TopBorderColor = NPOIColor.BLACK;
            }

            int iCol = 0, iRow = 1;

            foreach (DataColumn dc in Data.Columns)
            {
                SetValue(row, col + iCol, dc.ColumnName);
                SetStyle(row, col + iCol, titleStyle);
                iCol++;
            }

            rowStyle.FillForegroundColor = NPOIColor.WHITE;

            foreach (DataRow dr in Data.Rows)
            {
                iCol = 0;
                foreach (DataColumn dc in Data.Columns)
                {
                    SetValue(row + iRow, col + iCol, dr[dc]);
                    SetStyle(row + iRow, col + iCol, rowStyle);
                    iCol++;
                }
                iRow++;
            }

            for (int i = 0; i < iCol; i++)
            {
                this.AutoColWidth(i);
            }
        }

        /// <summary>
        /// 读取单元格的值
        /// 注：只对当前ActiveSheet有效
        /// </summary>
        /// <param name="rowIndex">行号</param>
        /// <param name="columnIndex">列号</param>
        /// <returns>单元格的值</returns>
        public object ReadValue(ISheet sheet, int rowIndex, int columnIndex, bool? isDateTime = null)
        {
            try
            {
                ICell cell = sheet.GetRow(rowIndex).GetCell(columnIndex);
                short df = cell.CellStyle.DataFormat;

                //return cell.ToString();
                switch (cell.CellType)
                {
                    case CellType.Blank:
                        return null;
                    case CellType.Boolean:
                        return cell.BooleanCellValue;
                    case CellType.Error:
                        throw new Exception("Cell Value Error");
                    case CellType.Formula:
                        {
                            switch (cell.CachedFormulaResultType)
                            {
                                case CellType.Blank:
                                    return "";
                                case CellType.Boolean:
                                    return cell.BooleanCellValue;
                                case CellType.Error:
                                    throw new Exception("Cell Value Error");
                                case CellType.Formula:
                                    throw new Exception("The Formula of this cell is too complex！");
                                case CellType.Numeric:
                                    if (isDateTime == null)
                                    {
                                        if (DateUtil.IsCellDateFormatted(cell))
                                        {
                                            return cell.DateCellValue;
                                        }
                                        else
                                        {
                                            return cell.NumericCellValue;
                                        }
                                    }
                                    else if (isDateTime == true)
                                    {
                                        return cell.DateCellValue;
                                    }
                                    else
                                    {
                                        return cell.NumericCellValue;
                                    }
                                case CellType.String:
                                    return cell.StringCellValue;
                                case CellType.Unknown:
                                    return cell.ToString();
                                default:
                                    return cell.ToString();
                            }
                        }
                    case CellType.Numeric:
                        {
                            if (isDateTime == null)
                            {
                                if (DateUtil.IsCellDateFormatted(cell))
                                {
                                    return cell.DateCellValue;
                                }
                                else
                                {
                                    return cell.NumericCellValue;
                                }
                            }
                            else if (isDateTime == true)
                            {
                                return cell.DateCellValue;
                            }
                            else
                            {
                                return cell.NumericCellValue;
                            }
                        }
                    case CellType.String:
                        return cell.StringCellValue;
                    case CellType.Unknown:
                        return cell.ToString();
                    default:
                        return cell.ToString();
                }
            }
            catch (System.NullReferenceException)
            {
                return null;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public int SheetCount
        {
            get
            {
                return Book.NumberOfSheets;
            }
        }

        public String GetSheetName(int Index)
        {
            return Book.GetSheetName(Index);
        }

        public void AddPicture(byte[] data, int row, int col)
        {
            int picIndex = Book.AddPicture(data, PictureType.PNG);

            IDrawing draw = ActiveSheet.CreateDrawingPatriarch();

            IClientAnchor anchor = draw.CreateAnchor(0, 0, 255, 255, col, row, col + 5, col + 5);
            IPicture pic = draw.CreatePicture(anchor, picIndex);
            pic.Resize();
        }
    }

    public enum OperatorTypes
    {
        /// <summary>
        /// 介于最大值与小值之间
        /// </summary>
        BETWEEN = OperatorType.BETWEEN,
        /// <summary>
        /// 等于最小值
        /// </summary>
        EQUAL = OperatorType.EQUAL,
        /// <summary>
        /// 大于或等于最小值
        /// </summary>
        GREATER_OR_EQUAL = OperatorType.GREATER_OR_EQUAL,
        /// <summary>
        /// 大于最小值
        /// </summary>
        GREATER_THAN = OperatorType.GREATER_THAN,
        /// <summary>
        /// 忽略
        /// </summary>
        NO_COMPARISON = OperatorType.IGNORED,
        /// <summary>
        /// 小于或等于最小值
        /// </summary>
        LESS_OR_EQUAL = OperatorType.LESS_OR_EQUAL,
        /// <summary>
        /// 小于最小值
        /// </summary>
        LESS_THAN = OperatorType.LESS_THAN,
        /// <summary>
        /// 不在最小值与最大值之间
        /// </summary>
        NOT_BETWEEN = OperatorType.NOT_BETWEEN,
        /// <summary>
        /// 不等于最小值
        /// </summary>
        NOT_EQUAL = OperatorType.NOT_EQUAL
    }

    public enum NPOIDataType
    {
        /// <summary>
        /// 验证整数
        /// </summary>
        Integer,
        /// <summary>
        /// 验证符点数
        /// </summary>
        Float,
        /// <summary>
        /// 验证日期
        /// </summary>
        Date,
        /// <summary>
        /// 验证时间
        /// </summary>
        Time,
        /// <summary>
        /// 验证字符长度
        /// </summary>
        TextLength
    }

    public static class NPOIColor
    {

        /// <summary>
        /// 红色
        /// </summary>
        public static short RED { get { return NPOI.HSSF.Util.HSSFColor.Red.Index; } }

        /// <summary>
        /// 蓝色
        /// </summary>
        public static short BLUE { get { return NPOI.HSSF.Util.HSSFColor.Blue.Index; } }

        /// <summary>
        /// 浅绿色
        /// </summary>
        public static short AQUA { get { return NPOI.HSSF.Util.HSSFColor.Aqua.Index; } }

        /// <summary>
        /// 自动
        /// </summary>
        public static short AUTOMATIC { get { return NPOI.HSSF.Util.HSSFColor.Automatic.Index; } }

        /// <summary>
        /// 黑色
        /// </summary>
        public static short BLACK { get { return NPOI.HSSF.Util.HSSFColor.Black.Index; } }

        /// <summary>
        /// 蓝灰色
        /// </summary>
        public static short BLUE_GREY { get { return NPOI.HSSF.Util.HSSFColor.BlueGrey.Index; } }

        /// <summary>
        /// 明绿色
        /// </summary>
        public static short BRIGHT_GREEN { get { return NPOI.HSSF.Util.HSSFColor.BrightGreen.Index; } }

        /// <summary>
        /// 棕色
        /// </summary>
        public static short BROWN { get { return NPOI.HSSF.Util.HSSFColor.Brown.Index; } }

        /// <summary>
        /// 正常
        /// </summary>
        public static short COLOR_NORMAL { get { return NPOI.HSSF.Util.HSSFColor.COLOR_NORMAL; } }

        /// <summary>
        /// 珊瑚色
        /// </summary>
        public static short CORAL { get { return NPOI.HSSF.Util.HSSFColor.Coral.Index; } }

        /// <summary>
        /// 亮蓝色
        /// </summary>
        public static short CORNFLOWER_BLUE { get { return NPOI.HSSF.Util.HSSFColor.CornflowerBlue.Index; } }

        /// <summary>
        /// 深蓝色
        /// </summary>
        public static short DARK_BLUE { get { return NPOI.HSSF.Util.HSSFColor.DarkBlue.Index; } }

        /// <summary>
        /// 深绿色
        /// </summary>
        public static short DARK_GREEN { get { return NPOI.HSSF.Util.HSSFColor.DarkGreen.Index; } }

        /// <summary>
        /// 深红色
        /// </summary>
        public static short DARK_RED { get { return NPOI.HSSF.Util.HSSFColor.DarkRed.Index; } }

        /// <summary>
        /// 深茶色
        /// </summary>
        public static short DARK_TEAL { get { return NPOI.HSSF.Util.HSSFColor.DarkTeal.Index; } }

        /// <summary>
        /// 深黄
        /// </summary>
        public static short DARK_YELLOW { get { return NPOI.HSSF.Util.HSSFColor.DarkYellow.Index; } }

        /// <summary>
        /// 金色
        /// </summary>
        public static short GOLD { get { return NPOI.HSSF.Util.HSSFColor.Gold.Index; } }

        /// <summary>
        /// 绿色
        /// </summary>
        public static short GREEN { get { return NPOI.HSSF.Util.HSSFColor.Green.Index; } }

        /// <summary>
        /// 25%灰色
        /// </summary>
        public static short GREY_25_PERCENT { get { return NPOI.HSSF.Util.HSSFColor.Grey25Percent.Index; } }

        /// <summary>
        /// 40%灰色
        /// </summary>
        public static short GREY_40_PERCENT { get { return NPOI.HSSF.Util.HSSFColor.Grey40Percent.Index; } }

        /// <summary>
        /// 50%灰色
        /// </summary>
        public static short GREY_50_PERCENT { get { return NPOI.HSSF.Util.HSSFColor.Grey50Percent.Index; } }

        /// <summary>
        /// 80%灰色
        /// </summary>
        public static short GREY_80_PERCENT { get { return NPOI.HSSF.Util.HSSFColor.Grey80Percent.Index; } }

        /// <summary>
        /// 靛蓝色
        /// </summary>
        public static short INDIGO { get { return NPOI.HSSF.Util.HSSFColor.Indigo.Index; } }

        /// <summary>
        /// 淡紫色
        /// </summary>
        public static short LAVENDER { get { return NPOI.HSSF.Util.HSSFColor.Lavender.Index; } }

        /// <summary>
        /// 粉黄色
        /// </summary>
        public static short LEMON_CHIFFON { get { return NPOI.HSSF.Util.HSSFColor.LemonChiffon.Index; } }

        /// <summary>
        /// 淡蓝色
        /// </summary>
        public static short LIGHT_BLUE { get { return NPOI.HSSF.Util.HSSFColor.LightBlue.Index; } }

        /// <summary>
        /// 淡亮蓝色
        /// </summary>
        public static short LIGHT_CORNFLOWER_BLUE { get { return NPOI.HSSF.Util.HSSFColor.LightCornflowerBlue.Index; } }

        /// <summary>
        /// 淡绿色
        /// </summary>
        public static short LIGHT_GREEN { get { return NPOI.HSSF.Util.HSSFColor.LightGreen.Index; } }

        /// <summary>
        /// 淡桔黄色
        /// </summary>
        public static short LIGHT_ORANGE { get { return NPOI.HSSF.Util.HSSFColor.LightOrange.Index; } }

        /// <summary>
        /// 淡蓝绿色
        /// </summary>
        public static short LIGHT_TURQUOISE { get { return NPOI.HSSF.Util.HSSFColor.LightTurquoise.Index; } }

        /// <summary>
        /// 淡黄色
        /// </summary>
        public static short LIGHT_YELLOW { get { return NPOI.HSSF.Util.HSSFColor.LightYellow.Index; } }

        /// <summary>
        /// 绿黄色
        /// </summary>
        public static short LIME { get { return NPOI.HSSF.Util.HSSFColor.Lime.Index; } }

        /// <summary>
        /// 栗色
        /// </summary>
        public static short MAROON { get { return NPOI.HSSF.Util.HSSFColor.Maroon.Index; } }

        /// <summary>
        /// 橄榄绿色
        /// </summary>
        public static short OLIVE_GREEN { get { return NPOI.HSSF.Util.HSSFColor.OliveGreen.Index; } }

        /// <summary>
        /// 桔色
        /// </summary>
        public static short ORANGE { get { return NPOI.HSSF.Util.HSSFColor.Orange.Index; } }

        /// <summary>
        /// 白灰蓝色
        /// </summary>
        public static short PALE_BLUE { get { return NPOI.HSSF.Util.HSSFColor.PaleBlue.Index; } }

        /// <summary>
        /// 粉红色
        /// </summary>
        public static short PINK { get { return NPOI.HSSF.Util.HSSFColor.Pink.Index; } }

        /// <summary>
        /// 紫红色
        /// </summary>
        public static short PLUM { get { return NPOI.HSSF.Util.HSSFColor.Plum.Index; } }

        /// <summary>
        /// 玫瑰红色
        /// </summary>
        public static short ROSE { get { return NPOI.HSSF.Util.HSSFColor.Rose.Index; } }

        /// <summary>
        /// 高贵蓝
        /// </summary>
        public static short ROYAL_BLUE { get { return NPOI.HSSF.Util.HSSFColor.RoyalBlue.Index; } }

        /// <summary>
        /// 海绿色
        /// </summary>
        public static short SEA_GREEN { get { return NPOI.HSSF.Util.HSSFColor.SeaGreen.Index; } }

        /// <summary>
        /// 天空蓝
        /// </summary>
        public static short SKY_BLUE { get { return NPOI.HSSF.Util.HSSFColor.SkyBlue.Index; } }

        /// <summary>
        /// 棕褐色
        /// </summary>
        public static short TAN { get { return NPOI.HSSF.Util.HSSFColor.Tan.Index; } }

        /// <summary>
        /// 茶色
        /// </summary>
        public static short TEAL { get { return NPOI.HSSF.Util.HSSFColor.Teal.Index; } }

        /// <summary>
        /// 蓝绿色
        /// </summary>
        public static short TURQUOISE { get { return NPOI.HSSF.Util.HSSFColor.Turquoise.Index; } }

        /// <summary>
        /// 紫色
        /// </summary>
        public static short VIOLET { get { return NPOI.HSSF.Util.HSSFColor.Violet.Index; } }

        /// <summary>
        /// 白色
        /// </summary>
        public static short WHITE { get { return NPOI.HSSF.Util.HSSFColor.White.Index; } }

        /// <summary>
        /// 黄色
        /// </summary>
        public static short YELLOW { get { return NPOI.HSSF.Util.HSSFColor.Yellow.Index; } }

    }

    /// <summary>
    /// 针对excel的Oledb
    /// </summary>
    public class OleDbExcel
    {
        /// <summary>
        /// OLEDB连接
        /// </summary>
        public OleDbConnection Connection
        {
            get;
            set;
        }

        /// <summary>
        /// 用Oledb对Excel进行操作
        /// 注：必须是标准表形式Excel内容
        /// </summary>
        /// <param name="excelFile">Excel文件</param>
        public OleDbExcel(String excelFile)
        {
            String conStr = String.Empty;
            FileInfo file = new FileInfo(excelFile);
            if (!file.Exists) { throw new Exception("文件不存在"); }
            String extension = file.Extension;
            switch (extension)
            {
                case ".xls":
                    conStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + excelFile + ";Extended Properties='Excel 8.0;HDR=Yes;IMEX=1;'";
                    break;
                case ".xlsx":
                    conStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + excelFile + ";Extended Properties='Excel 12.0;HDR=Yes;IMEX=1;'";
                    break;
                default:
                    conStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + excelFile + ";Extended Properties='Excel 8.0;HDR=Yes;IMEX=1;'";
                    break;
            }

            //链接Excel
            Connection = new OleDbConnection(conStr);
        }

        private List<String> tableNames;

        /// <summary>
        /// 获取Excel内的Sheet名称
        /// </summary>
        public List<String> Sheets
        {
            get
            {
                if (tableNames == null)
                {
                    try
                    {
                        tableNames = new List<String>();
                        //读取Excel里面的sheet名
                        Connection.Open();

                        DataTable schemaTable = Connection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });

                        for (int i = 0; i < schemaTable.Rows.Count; i++)
                        {
                            DataRow dr = schemaTable.Rows[i];
                            String tbName = dr["table_name"].ToString();
                            if (tbName[tbName.Length - 1] == '$')
                            {
                                tableNames.Add(tbName);
                            }
                        }
                        Connection.Close();
                    }
                    catch (Exception ex)
                    {
                        if (Connection.State != ConnectionState.Closed)
                        {
                            Connection.Close();
                        }
                        throw new Exception(ex.Message, ex);
                    }
                }
                return tableNames;
            }
        }

        /// <summary>
        /// 查询出所有数据
        /// </summary>
        /// <param name="tableName">Sheet名称</param>
        /// <returns>sheet内的所有数据</returns>
        public DataSet QueryAll(String tableName)
        {
            try
            {
                DataSet excelData = new DataSet();
                OleDbDataAdapter adapter = new OleDbDataAdapter();
                adapter.SelectCommand = new OleDbCommand();
                adapter.SelectCommand.Connection = Connection;
                adapter.SelectCommand.CommandText = String.Format("SELECT * FROM {0}", "[" + tableName + "]");
                adapter.Fill(excelData);
                return excelData;
            }
            catch (Exception ex)
            {
                if (Connection.State != ConnectionState.Closed)
                {
                    Connection.Close();
                }
                throw new Exception(ex.Message, ex);
            }
        }

        /// <summary>
        /// 查询出所有数据
        /// </summary>
        /// <param name="tableIndex">Sheet序号（从0开始）</param>
        /// <returns>sheet内的所有数据</returns>
        public DataSet QueryAll(int tableIndex)
        {
            return QueryAll(Sheets[tableIndex]);
        }

        /// <summary>
        /// 利用Sql进行查询
        /// </summary>
        /// <param name="sql">Sql语句</param>
        /// <returns>查询出的数据</returns>
        public DataSet Query(String sql)
        {
            try
            {
                DataSet excelData = new DataSet();
                OleDbDataAdapter adapter = new OleDbDataAdapter(sql, Connection);
                adapter.Fill(excelData);
                return excelData;
            }
            catch (Exception ex)
            {
                if (Connection.State != ConnectionState.Closed)
                {
                    Connection.Close();
                }
                throw new Exception(ex.Message, ex);
            }
        }

        /// <summary>
        /// 利用Sql进行查询
        /// </summary>
        /// <param name="sql">Sql语句</param>
        /// <param name="param">查询参数</param>
        /// <returns>查询出的数据</returns>
        public DataSet Query(String sql, params OleDbParameter[] param)
        {
            try
            {
                DataSet excelData = new DataSet();
                OleDbDataAdapter adapter = new OleDbDataAdapter(sql, Connection);
                adapter.SelectCommand.Parameters.AddRange(param);
                adapter.Fill(excelData);
                return excelData;
            }
            catch (Exception ex)
            {
                if (Connection.State != ConnectionState.Closed)
                {
                    Connection.Close();
                }
                throw new Exception(ex.Message, ex);
            }
        }

        /// <summary>
        /// 利用Sql进行数据操作
        /// </summary>
        /// <param name="sql">sql语句</param>
        /// <returns>影响的行数</returns>
        public int ExecuteSql(String sql)
        {
            try
            {
                Connection.Open();
                OleDbCommand cmd = Connection.CreateCommand();
                cmd.CommandText = sql;
                int rtn = cmd.ExecuteNonQuery();
                Connection.Close();
                return rtn;
            }
            catch (Exception ex)
            {
                if (Connection.State != ConnectionState.Closed)
                {
                    Connection.Close();
                }
                throw new Exception(ex.Message, ex);
            }
        }

        /// <summary>
        /// 利用Sql进行数据操作
        /// </summary>
        /// <param name="sql">sql语句</param>
        /// <param name="param">执行参数</param>
        /// <returns>影响的行数</returns>
        public int ExecuteSql(String sql, params OleDbParameter[] param)
        {
            try
            {
                Connection.Open();
                OleDbCommand cmd = Connection.CreateCommand();
                cmd.CommandText = sql;
                cmd.Parameters.AddRange(param);
                int rtn = cmd.ExecuteNonQuery();
                Connection.Close();
                return rtn;
            }
            catch (Exception ex)
            {
                if (Connection.State != ConnectionState.Closed)
                {
                    Connection.Close();
                }
                throw new Exception(ex.Message, ex);
            }
        }
    }
}