#region DataTable导出到Excel
///
/// DataTable导出到Excel
/// www.
/// DataTable
/// 导出文件名
/// 导出标题以|分割
public static void DataTableExcel(System.Data.DataTable pData, string pFileName, string pHeader)
{
System.Web.UI.WebControls.DataGrid dgExport = null;
// 当前对话
System.Web.HttpContext curContext = System.Web.HttpContext.Current;
// IO用于导出并返回excel文件
System.IO.StringWriter strWriter = null;
System.Web.UI.HtmlTextWriter htmlWriter = null;
if (pData != null)
{
string UserAgent = curContext.Request.ServerVariables["http_user_agent"].ToLower();
if (UserAgent.IndexOf("firefox") == -1)//火狐浏览器
pFileName = HttpUtility.UrlEncode(pFileName, System.Text.Encoding.UTF8);

curContext.Response.AddHeader("Content-Disposition", "attachment; filename=" + pFileName + ".xls");
curContext.Response.ContentType = "application/vnd.ms-excel";
strWriter = new System.IO.StringWriter();
htmlWriter = new System.Web.UI.HtmlTextWriter(strWriter);

//解决dgData中可能进行分页，需要重新定义一个无分页的DataGrid
dgExport = new System.Web.UI.WebControls.DataGrid();
dgExport.DataSource = pData.DefaultView;
dgExport.AllowPaging = false;
dgExport.ShowHeader = false;//去掉标题
dgExport.DataBind();

string[] arrHeader = pHeader.Split('|');
string strHeader = "";
foreach (string j in arrHeader)
{
strHeader += "" + j.ToString() + "";
}
strHeader += "";
// 返回客户端
dgExport.RenderControl(htmlWriter);
string strMeta = "";
curContext.Response.Write(strMeta + strHeader + strWriter.ToString());
curContext.Response.End();
}
}
#endregion