RadioButtonList选择asp.net c#时SelectedIndexChanged不工作?autopost

Question

我在这里挣扎了很多。。。好心帮忙。。下面的aspx页面代码。。。

<asp:RadioButtonList ID="sing_group" runat="server" RepeatDirection="Horizontal" 
                        onselectedindexchanged="sing_group_SelectedIndexChanged" AutoPostBack="true">
                        <asp:ListItem Value="0">Single</asp:ListItem>
                        <asp:ListItem Value="1">Group</asp:ListItem>
                    </asp:RadioButtonList>

我的代码隐藏代码。。。

    protected void sing_group_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (sing_group.SelectedValue == "0")
        {
            first_name.Enabled = true;
            last_name.Enabled = true;
            group_name.Enabled = false;
        }
        else
        {
            first_name.Enabled = false;
            last_name.Enabled = false;
            group_name.Enabled = true;
        }
    }

Answer 1

也可以这样尝试。。这肯定会运行的。。

<asp:RadioButtonList ID="sing_group" runat="server" RepeatDirection="Horizontal" 
                       AutoPostBack="true">
                        <asp:ListItem Value="0">Single</asp:ListItem>
                        <asp:ListItem Value="1">Group</asp:ListItem>
                    </asp:RadioButtonList>
Protected Void Page_Load(Object Sender, EventArgs e){
    sing_group.SelectedIndexChanged += sing_group_SelectedIndexChanged;
}
protected void sing_group_SelectedIndexChanged(object sender, EventArgs e)
{
    if (sing_group.SelectedValue == "0")
    {
        first_name.Enabled = true;
        last_name.Enabled = true;
        group_name.Enabled = false;
    }
    else
    {
        first_name.Enabled = false;
        last_name.Enabled = false;
        group_name.Enabled = true;
    }
}

Answer 2

根据MSDN，事件名称为OnSelectedIndexChanged在您的代码中，这都是小写的。

<asp:RadioButtonList id="RadioButtonList1" 
            OnSelectedIndexChanged="Index_Changed"
            AutoPostBack="true"
            runat="server"/>

Answer 3

您写错了代码。请更改您的代码。

您的代码是：

onselectedindexchanged="sing_group_SelectedIndexChanged"

但应该是：

OnSelectedIndexChanged="sing_group_SelectedIndexChanged"

你可以得到输出。