asp.net DataSet数据导出到Excel中

方法：

[STAThread]///这是必须的
    public override void VerifyRenderingInServerForm(System.Web.UI.Control control)
    {
        //base.VerifyRenderingInServerForm(control);
    }

public void OutExcel()     {

　　  dsExcel = OPA_HistoryEmployee.GetChineseHistoryEmployeeList(opa_historyemployee);

opa_appraiseinfo.ID=AppInfoId;         opa_appraiseinfo.CompanyID = CompanyID;

opa_appraiseinfo = OPA_AppraiseInfo.GetAppraiseInfoByID(opa_appraiseinfo);

string FileName = opa_appraiseinfo.Title+"_"+DateTime.Now.ToString("yyyy年MM月dd日")+".xls";

HttpResponse resp;         resp = Page.Response;

resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");

resp.AppendHeader("Content-Disposition", "attachment;filename=" + FileName);

resp.ContentType = "application/vnd.ms-xls";

string colHeaders = "", ls_item = "";

int i = 0;

//定义表对象和行对像，同时用DataSet对其值进行初始化

DataRow[] myRow = dsExcel.Tables[0].Select();

//取得数据表各列标题，各标题之间以\t分割，最后一个列标题后加回车符

for (i = 0; i < dsExcel.Tables[0].Columns.Count; i++)         {

if (i == dsExcel.Tables[0].Columns.Count - 1)             {

colHeaders += dsExcel.Tables[0].Columns[i].Caption.ToString() + "\n";

}  else

{

colHeaders += dsExcel.Tables[0].Columns[i].Caption.ToString() + "\t";

}

}         //向HTTP输出流中写入取得的数据信息

resp.Write(colHeaders);

//逐行处理数据

foreach (DataRow row in myRow)         {

//在当前行中，逐列获得数据，数据之间以\t分割，结束时加回车符\n

for (i = 0; i < dsExcel.Tables[0].Columns.Count; i++)

{

if (i == dsExcel.Tables[0].Columns.Count - 1)

{

ls_item += row[i].ToString() + "\n";

}   else

{

ls_item += row[i].ToString() + "\t";

}

}

//当前行数据写入HTTP输出流，并且置空ls_item以便下行数据

resp.Write(ls_item);

ls_item = "";

}

resp.End();     }