從GridView中直接匯出資料到Excel檔案 處理匯出亂碼 類型“GridView”的控制項“XXXX”必須放在具有 runat=server 的表單標記內。”的異常

來源:互聯網
上載者:User

匯出到Excel方法:

        public void ExportToExcel(GridView gridView)        {            gridView.AllowPaging = false;//禁用分頁,將資料全部匯出到EXCEL            Response.Clear();            Response.Buffer = true;            Response.Charset = "gb2312";            Response.AddHeader("Content-Disposition", "attachment; filename="        + System.Web.HttpUtility.UrlEncode(DateTime.Now.ToLongDateString()+DateTime.Now.ToLongTimeString(), System.Text.Encoding.UTF8) + ".xls");            Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");//設定輸出資料流為簡體中文            Response.Write("<meta http-equiv=Content-Type content=text/html;charset=gb2312>");            Response.ContentType = "application/vnd.ms-excel";//設定輸出檔案類型為excel檔案。             this.EnableViewState = false;            System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN", true);            System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad);            System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);            //這裡需要重新綁定資料來源            this.BindgridView(); //綁定資料來源的函數            gridView.RenderControl(oHtmlTextWriter);            Response.Write(oStringWriter.ToString());            Response.End();        }

 

如上代碼如果處理一般的GridView匯出應該是沒有問題的,但是如果GridView的AutoGenerateDeleteButton,AutoGenerateEditButton,AutoGenerateSelectButton有的設定為True了,或者GridView中有HyperLinkField類型的欄位,那麼就會拋出形如“類型“GridView”的控制項“XXXX”必須放在具有 runat=server 的表單標記內。”的異常!

那麼他的解決方案是:對WebForm表單的VerifyRenderingInServerForm方法進行Override!
代碼如下:

public override void VerifyRenderingInServerForm(Control control){       //OverRide 為了使匯出成Excel可行!}

 

處理亂碼的代碼:

           Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");//設定輸出資料流為簡體中文            Response.Write("<meta http-equiv=Content-Type content=text/html;charset=gb2312>");

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