jscript给dropdownlist添加新项报错
<%@ 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