把DataGrid中的内容以Excel显示

把DataGrid中的内容以Excel显示

客户端脚本

< TABLE  id ="Table1"  style ="Z-INDEX: 102; LEFT: 16px; WIDTH: 288px; POSITION: absolute; TOP: 16px; HEIGHT: 178px"
                cellSpacing ="1"  cellPadding ="1"  width ="288"  border ="0" >
                 < TR >
                     < TD >
                         < asp:datagrid  id ="dgExcel"  runat ="server"  Font-Names ="宋体"  Font-Size ="9pt"  Height ="100%"  Width ="100%"
                            BorderStyle ="None"  BorderWidth ="1px"  BorderColor ="#CC9966"  BackColor ="White"  CellPadding ="4" >
                             < SelectedItemStyle  Font-Bold ="True"  ForeColor ="#663399"  BackColor ="#FFCC66" ></ SelectedItemStyle >
                             < AlternatingItemStyle  BackColor ="#FFCC99" ></ AlternatingItemStyle >
                             < ItemStyle  BorderWidth ="2px"  ForeColor ="#330099"  BorderStyle ="Solid"  BorderColor ="Black"  BackColor ="White" ></ ItemStyle >
                             < HeaderStyle  Font-Bold ="True"  HorizontalAlign ="Center"  BorderWidth ="2px"  ForeColor ="#FFFFCC"
                                BorderStyle ="Solid"  BorderColor ="Black"  BackColor ="#990000" ></ HeaderStyle >
                         </ asp:datagrid ></ TD >
                 </ TR >
                 < TR >
                     < TD >
                         < asp:Button  id ="btnGetExcel"  runat ="server"  Text ="把DataGrid中的内容以Excel显示" ></ asp:Button ></ TD >
                 </ TR >
             </ TABLE >

服务端代码

         protected  System.Web.UI.WebControls.Button btnGetExcel;
         protected  System.Web.UI.WebControls.DataGrid dgExcel;
    
         private   void  Page_Load( object  sender, System.EventArgs e)
         {
            DataSet objDataset = new DataSet();
            SqlConnection objConn = new SqlConnection();
            objConn = new SqlConnection(ConfigurationSettings.AppSettings["ConnectionSqlServer"].ToString());
            objConn.Open();
            SqlDataAdapter objAdapter = new SqlDataAdapter("Select top 5 * from customers where country='USA'",objConn);
            objAdapter.Fill(objDataset);    
            DataView oView = new DataView(objDataset.Tables[0]);
            dgExcel.DataSource = oView;
            dgExcel.DataBind();
            objConn.Close();
            objConn.Dispose();
            objConn = null;
            if(Request.QueryString["bExcel"] == "1")
            {
                Response.ContentType = "application/vnd.ms-excel";
                
                Response.Charset = "";

                //关闭 ViewState
                EnableViewState = false;
                System.IO.StringWriter tw = new System.IO.StringWriter();//将信息写入字符串
                System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);//在WEB窗体页上写出一系列连续的HTML特定字符和文本。
                //此类提供ASP.NET服务器控件在将HTML内容呈现给客户端时所使用的格式化功能
                //获取control的HTML
                dgExcel.RenderControl(hw);//将DATAGRID中的内容输出到HtmlTextWriter对象中
                // 把HTML写回浏览器
                Response.Write(tw.ToString());
                Response.End();
            }

        }

 

         private   void  btnGetExcel_Click( object  sender, System.EventArgs e)
         {
            Response.Redirect("excel.aspx?bExcel=1");
        }