在以下按鈕單擊事件中實現：
private void btnMIME_Click(object sender, System.EventArgs e)
{
BindData();
Response.ContentType = "application/vnd.ms-Excel";
Response.AddHeader("Content-Disposition", "inline;filename="
+ HttpUtility.UrlEncode("下載文件.xls",Encoding.UTF8 ) );
//如果輸出為Word，修改為以下代碼
//Response.ContentType = "application/ms-Word"
//Response.AddHeader("Content-Disposition", "inline;filename=test.doc")
StringBuilder sb=new StringBuilder();
System.IO.StringWriter sw = new System.IO.StringWriter(sb);
System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(sw);
sb.Append("<Html><body>");
dgShow.RenderControl(hw);
sb.Append("</body></Html>");
Response.Write(sb.ToString());
Response.End();
}
注：1.若DataGrid中有按鈕列，則在導出前應先將其隱藏.
2.若DataGrid有分頁，而又要打印所有數據的話就應先取消分頁.
http://pyt5208.cnblogs.com/archive/2006/07/10/447048.Html
