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【Asp.Net】 GridView Repeater导出PDF-Word-Excel

作者:天顺 / 发布于2015/4/21/ 629

可能的报错信息：

RegisterForEventValidation(RegisterForEventValidation can only be called during Render();

解决方法：

当用GridView导出Execl的时候，会发生只能在执行 Render() 的过程中调用 RegisterForEventValidation的错误提示。
有两种方法可以解决以上问题：
1.修改web.config(不推荐)<pages enableEventValidation ="false" ></pages>
2.直接在导出Execl的页面修改

<%@ Page Language="C#" EnableEventValidation = "false" AutoEventWireup="true"

CodeFile="ExportGridView.aspx.cs" Inherits="ExportGridView" %>


	#region Export to Word, Excel and PDF
	 protected void btnword_Click(object sender, EventArgs e)
	 {
	 Response.AddHeader("content-disposition", "attachment;filename=FileName.doc");
	 Response.Cache.SetCacheability(HttpCacheability.NoCache);
	 Response.ContentType = "application/vnd.word";
	 System.IO.StringWriter stringWrite = new System.IO.StringWriter();
	 System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);

	 // Create a form to contain the grid
	 HtmlForm frm = new HtmlForm();
	 GridView4.Parent.Controls.Add(frm);
	 frm.Attributes["runat"] = "server";
	 frm.Controls.Add(GridView4);
	 frm.RenderControl(htmlWrite);

	 //GridView1.RenderControl(htw);
	 Response.Write(stringWrite.ToString());
	 Response.End();
	 }
	 protected void btnexcel_Click(object sender, EventArgs e)
	 {
	 string attachment = "attachment; filename=Contacts.xls";
	 Response.ClearContent();
	 Response.AddHeader("content-disposition", attachment);
	 Response.ContentType = "application/ms-excel";
	 StringWriter sw = new StringWriter();
	 HtmlTextWriter htw = new HtmlTextWriter(sw);

	 // Create a form to contain the grid
	 HtmlForm frm = new HtmlForm();
	 GridView1.Parent.Controls.Add(frm);
	 frm.Attributes["runat"] = "server";
	 frm.Controls.Add(GridView1);
	 frm.RenderControl(htw);

	 //GridView1.RenderControl(htw);
	 Response.Write(sw.ToString());
	 Response.End();
	 }
	 protected void btnpdf_Click(object sender, EventArgs e)
	 {
	 Response.Clear();

	 StringWriter sw = new StringWriter();
	 HtmlTextWriter htw = new HtmlTextWriter(sw);
	 GridView1.RenderControl(htw);

	 Response.ContentType = "application/pdf";
	 Response.AddHeader("content-disposition", "attachment; filename=MypdfFile.pdf");
	 Response.Write(sw.ToString());
	 Response.End();
	 }

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