DataTable转CSV

直接上方法：

         /// <summary>
         /// 将DataTable转换成CSV文件
         /// </summary>
         /// <param name="dt">DataTable</param>
         /// <param name="filePath">文件路径</param>
         public static void SaveCSV(DataTable dt, string filePath)
         {
             FileStream fs = new FileStream(filePath + dt.TableName + ".csv", System.IO.FileMode.Create, System.IO.FileAccess.Write);
             StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.Default);
             string data = "";

             //写出列名称
             for (int i = ; i < dt.Columns.Count; i++)
             {
                 data += dt.Columns[i].ColumnName.ToString();
                 if (i < dt.Columns.Count - )
                 {
                     data += ",";
                 }
             }
             sw.WriteLine(data);

             //写出各行数据
             for (int i = ; i < dt.Rows.Count; i++)
             {
                 data = "";
                 for (int j = ; j < dt.Columns.Count; j++)
                 {
                     data += dt.Rows[i][j].ToString();
                     if (j < dt.Columns.Count - )
                     {
                         data += ",";
                     }
                 }
                 sw.WriteLine(data);
             }
             sw.Close();
             fs.Close();
         }