求帮助关于radiobutton的checkedchanged事件
前台
<div>
<asp:RadioButton ID="RadioButton1" runat="server" Checked="True" AutoPostBack="True" Text="已通过" GroupName="1" />
<asp:RadioButton ID="RadioButton2" runat="server" AutoPostBack="True"
Text="未通过" GroupName="1" oncheckedchanged="CheckedChanged" />
</div>
后台:
private void RadioButton2.CheckedChanged(object sender, System.EventArgs e)
{
Response.Write("<script>alert('未通过!')</script>");
}
请问哪里错了,求告知