asp.net中将DataGrid数据导出到excel或word文件中

private void Page_Load(object sender, System.EventArgs e)
{
SqlConnection con=new SqlConnection("server=.;database=pubs;uid=sa;pwd=;");
con.Open();
SqlDataAdapter sda=new SqlDataAdapter();
sda.SelectCommand=new SqlCommand("select * from txtInsert",con);
DataSet ds=new DataSet();
sda.Fill(ds,"emp");
this.DgSource.DataSource=ds.Tables["emp"];
this.DgSource.DataBind();
con.Close();
}

public void DataGridToExcel(DataGrid grdTemp,DataSet dsTemp)
{
grdTemp.AllowPaging=false; //设置不能分页

grdTemp.DataSource=dsTemp; //重新绑定数据源
grdTemp.DataBind();

//常规导出方法

System.IO.StringWriter SW = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter HTW=new System.Web.UI.HtmlTextWriter(SW);
grdTemp.RenderControl(HTW);

//Page为要导出的对象,当前是Page,如果是DataGrid,DataList等都可以
Response.Buffer=true;
Response.Clear();
Response.ClearContent();
Response.ClearHeaders();
Response.ContentType = "application/vnd.ms-excel";
//Response.ContentType是输出流的 HTTP MIME 类型
//Response.ContentType --- word文件
//application/vnd.ms-excel --- excel文件
//
Response.Charset="utf-8";
Response.ContentEncoding=System.Text.Encoding.GetEncoding("utf-8");
Response.AddHeader("Content-Disposition", "attachment;filename=aaa.xls");
//attachment --- 作为附件下载
//inline --- 在线打开
//filename如过是中文,则可以用HttpUtility.UrlEncode(fileName,System.Text.Encoding.UTF8)
//进行进行编码,以解决文件名乱码的问题
Response.Write(SW.ToString());
Response.Flush();
Response.Close();
}

private void Button1_Click(object sender, System.EventArgs e)
{
SqlConnection con=new SqlConnection("server=.;database=pubs;uid=sa;pwd=;");
con.Open();
SqlDataAdapter sda=new SqlDataAdapter();
sda.SelectCommand=new SqlCommand("select * from txtInsert",con);
DataSet ds=new DataSet();
sda.Fill(ds,"emp");
this.DgSource.DataSource=ds.Tables["emp"];
this.DataGridToExcel(this.DgSource,ds);
con.Close();
}