using System;
using System.Data;
using System.Linq;

namespace BLL
{
    /// <summary>
    /// 字符串操作辅助类
    /// </summary>
    public class StringHelper
    {
        /// <summary>
        /// 字符串转换
        /// 'A,B,C' => 'A','B','C'
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static string StringConvert(string str)
        {
            string result = string.Empty;
            if (!string.IsNullOrWhiteSpace(str))
            {
                string[] items = str.Split(',');
                result = string.Join(",", items.Select(x => $"'{x}'"));
            }
            return result;
        }
    }
}