asp.net实现数据从DataTable导入到Excel文件并创建表的方法

本文实例讲述了asp.net实现数据从DataTable导入到Excel文件并创建表的方法。，具体如下：

/// <summary>/// 把数据从DataTable导入到Excel文件里/// </summary>/// <param name="dataTable">数据源</param>/// <param name="AbsoluteExcelFilePath">Excel文件的绝对路径</param>/// <param name="TblColName">TBL里对应的列名</param>/// <param name="ColumnName">Excel中对应的列名</param>/// <returns>操作成功返回True,失败返回False</returns>public static bool ExportDataToExcel(DataTable dataTable, string AbsoluteExcelFilePath, string[] TblColName, string[] ColumnName){  int k = 0;  if (dataTable == null) return false;  OleDbConnection Conn = new OleDbConnection();  try  {   string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + AbsoluteExcelFilePath + ";Mode=Share Deny None;Extended Properties=Excel 8.0;Jet OLEDB:Create System Database=True";   Conn = new OleDbConnection(strConn);   Conn.Open();   OleDbCommand command = Conn.CreateCommand();   string strSQL = "";   if (dataTable.Columns != null)   {    //建表    strSQL = "CREATE TABLE " + dataTable.TableName + "(";    for (int i = 0; i < ColumnName.Length; i++)    {     strSQL += ColumnName[i] + " TEXT,";    }    strSQL = strSQL.Substring(0, strSQL.Length - 1);    strSQL += ")";    command.CommandText += strSQL;    command.ExecuteNonQuery();    if (dataTable.Rows.Count > 0)    {     //导入数据     foreach (DataRow row in dataTable.Rows)     {      strSQL = "insert into " + dataTable.TableName + "(";      for (k = 0; k < TblColName.Length; k++)      {       strSQL += ColumnName[k] + ",";      }      strSQL = strSQL.Substring(0, strSQL.Length - 1);      strSQL += ") values( ";      for (k = 0; k < TblColName.Length; k++)      {       strSQL += "'" + row[TblColName[k]] + "',";      }      strSQL = strSQL.Substring(0, strSQL.Length - 1);      strSQL += ")";      command.CommandText = strSQL;      command.ExecuteNonQuery();     }    }   }  }  catch (Exception ex)  {   Conn.Close();   throw new Exception(ex.Message);   return false;  }  Conn.Close();  return true;}

调用方法:

DataSet ds = (DataSet)Session["listMobile"];//获得要导出的表格的值if (ds.Tables[0].Rows.Count <= 0){ Page.RegisterStartupScript("", "<mce:script type="text/javascript"><!--alert('没有内容不能导出！')// --></mce:script>");}else{ //EXCEL页面的名称 string[] tableName = { "["+DateTime.Now.ToString("yyyyMMddhhmmss")+"]" }; string fileName = tools.CreateID() + ".xls"; string filePath = Server.MapPath("..//DownloadFiles//" + fileName); if (tools.ExportDataToExcel(ds, filePath, tableName)==true) {  Response.Clear();  Response.Buffer = true;  Response.Charset = "GB2312";  Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileName);  Response.ContentType = "application/vnd.ms-excel";  this.EnableViewState = false;  Response.WriteFile(filePath);  Response.Flush();  if (System.IO.File.Exists(filePath)) System.IO.File.Delete(filePath);  Response.Redirect(this.Request.UrlReferrer.AbsoluteUri, true);  Response.End(); }}