Question

Like I wrote in the title, the code-behind gets the wrong value when I try to change the selection of a RadioButton.

Dilemma.aspx:

<asp:RadioButtonList ID="rbList" runat="server">
    <asp:ListItem Text="Yes, please." />
    <asp:ListItem Text="No, thanks." />
    <asp:ListItem Text="Ummm... maybe." />
</asp:RadioButtonList>
<asp:Button ID=""btnChoose" runat="server" text="OK" OnClick="btnChoose_Click" />

Dilemma.aspx.cs:

protected void Page_Load(object sender, EventArgs e)
{
    int initialIndex = GetInitialIndex(); // Simplified for sake of question.
    rbList.SelectedIndex = initialIndex; // This works.
}

protected void btnChoose_Click(object sender, EventArgs e)
{
    int selection = rbList.SelectedIndex; // This gets it wrong!
}

Instead of getting the newly-selected RadioButton, the code-behind still believes that the selected index is the initial index.

Why?

Answer 1

protected void Page_Load(object sender, EventArgs e)
{
    if (!Page.IsPostBack)
    {
        int initialIndex = GetInitialIndex(); // Simplified for sake of question.
        rbList.SelectedIndex = initialIndex; // This works.
    }
}

Somebody posted this answer, but deleted it for some reason.
Whoever it is who posted this answer before me – it works!