问题描述:
只能在执行 Render() 的过程中调用 RegisterForEventValidation(RegisterForEventValidation can only be called during Render(); )
解决方法:
1.修改web.config
<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" %>
CodeFile="ExportGridView.aspx.cs" Inherits="ExportGridView" %>