jscript给dropdownlist平添新项报错

2012-11-03

jscript给dropdownlist添加新项报错HTML code%@ Page LanguageC# AutoEventWireuptrue CodeFilei

jscript给dropdownlist添加新项报错

HTML code

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="index.aspx.cs" Inherits="index" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head id="Head1" >    <title>无标题页</title><script language="javascript" type="text/javascript">    function getData(){   document.getElementById("dpdl").options.add(new Option("1","2"));}</script></head><body>   <form id="form1" runat="server">         <asp:DropDownList ID="dpdl"  AutoPostBack="true"  runat="server">   </asp:DropDownList>      <input id="Submit1" type="submit" onclick="getData()"/>   </form></body></html>

[解决办法]
这个是因为你开启了事件来源验证，通过js添加的option对象没有生成对应的viewstate导致出错，关闭事件来源验证，或者参考ArgumentException: 回发或回调参数无效

建立楼主还是去掉viewstate好些，多使用request对象来获取提交的值，而不是使用id.text

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jscript给dropdownlist平添新项报错