108 lines
4.0 KiB
C#
108 lines
4.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Data.SqlClient;
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using System.Linq;
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namespace BLL
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{
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public static class SqlBulkHelper
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{
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///<summary>
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///连接数据库
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///</summary>
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///<returns>返回SqlConnection对象</returns>
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public static SqlConnection GetCon()
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{
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return new SqlConnection(Funs.ConnString);
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}
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#region SqlBulkCopy批量插入数据
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/// <summary>
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/// 执行SqlBulkCopy批量插入，执行事务。
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/// </summary>
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/// <param name="connectionString">数据连接</param>
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/// <param name="TableName">表名</param>
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/// <param name="dt">要插入的数据</param>
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/// <returns></returns>
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public static int SqlBulkCopy(string connectionString, string TableName, DataTable dt)
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{
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using (SqlConnection conn = new SqlConnection(connectionString))
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{
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using (SqlBulkCopy sqlbulkcopy = new SqlBulkCopy(connectionString, SqlBulkCopyOptions.UseInternalTransaction))
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{
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try
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{
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sqlbulkcopy.DestinationTableName = TableName;
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for (int i = 0; i < dt.Columns.Count; i++)
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{
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sqlbulkcopy.ColumnMappings.Add(dt.Columns[i].ColumnName, dt.Columns[i].ColumnName);
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}
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sqlbulkcopy.WriteToServer(dt);
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return 1;
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}
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catch (System.Exception ex)
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{
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return 0;
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}
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}
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}
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}
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/// <summary>
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/// 批量插入
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/// </summary>
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/// <typeparam name="T">泛型集合的类型</typeparam>
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/// <param name="conn">连接对象</param>
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/// <param name="tableName">将泛型集合插入到本地数据库表的表名</param>
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/// <param name="list">要插入大泛型集合</param>
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public static int BulkInsert<T>(SqlConnection conn, string tableName, IList<T> list)
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{
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int result = 0;
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try
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{
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if (conn.State != ConnectionState.Open)
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{
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conn.Open(); //打开Connection连接
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}
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using (var bulkCopy = new SqlBulkCopy(conn))
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{
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bulkCopy.BatchSize = result = list.Count;
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bulkCopy.DestinationTableName = tableName;
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bulkCopy.BulkCopyTimeout = 600;
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var table = new DataTable();
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var props = TypeDescriptor.GetProperties(typeof(T)).Cast<PropertyDescriptor>().Where(propertyInfo => propertyInfo.PropertyType.Namespace.Equals("System")).ToArray();
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foreach (var propertyInfo in props)
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{
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bulkCopy.ColumnMappings.Add(propertyInfo.Name, propertyInfo.Name);
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table.Columns.Add(propertyInfo.Name, Nullable.GetUnderlyingType(propertyInfo.PropertyType) ?? propertyInfo.PropertyType);
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}
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var values = new object[props.Length];
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foreach (var item in list)
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{
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for (var i = 0; i < values.Length; i++)
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{
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values[i] = props[i].GetValue(item);
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}
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table.Rows.Add(values);
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}
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bulkCopy.WriteToServer(table);
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}
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if (conn.State != ConnectionState.Closed)
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{
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conn.Close(); //关闭Connection连接
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}
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}
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catch (Exception ex)
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{
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result = 0;
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}
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return result;
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}
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#endregion
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}
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} |