dynamically created radiobuttonlist

Question

Have a master page. The content page has a list with hyperlinks containing request variables. You click on one of the links to go to the page containing the radiobuttonlist

Answer 1

If you have a content placeholder, could you just add the radio button list control to there?

On Master Page:

<asp:ContentPlaceHolder id="ContentPlaceHolderForRadioButtonList" runat="server">       
</asp:ContentPlaceHolder>

Some links, containing request variables used on the next page.

<a href="RadioButtonList.aspx?ref=first" >Link 1</a>
<a href="RadioButtonList.aspx?ref=second" >Link 2</a><br />
<a href="RadioButtonList.aspx?ref=third" >Link 3</a><br />
<a href="RadioButtonList.aspx?ref=forth" >Link 4</a><br />
<a href="RadioButtonList.aspx?ref=fifth" >Link 5</a><br />
<a href="RadioButtonList.aspx?ref=sixth" >Link 6</a>

Now on the page with the radio button list, add it into the content placeholder.

<asp:Content ID="Content3" ContentPlaceHolderID="ContentPlaceHolderForRadioButtonList" Runat="Server">
<!-- radio button list to be dynamically populated-->
    <asp:RadioButtonList ID="RadioButtonList1" runat="server">
    </asp:RadioButtonList>
</asp:Content>

RadioButtonList.aspx: Code to dynamically populate your radio button list based on the information passed in.

 Partial Class RadioButtonList
    Inherits System.Web.UI.Page
    Private selection As String = ""

    Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init
        selection = IIf(Request.QueryString("ref") IsNot Nothing, Request.QueryString("ref"), "")
        If selection = "first" Then
            RadioButtonList1.Items.Add(New ListItem("first", "1"))
            RadioButtonList1.Items.Add(New ListItem("third", "3"))
            RadioButtonList1.Items.Add(New ListItem("fifth", "5"))
        ElseIf selection = "second" Then
            RadioButtonList1.Items.Add(New ListItem("second", "2"))
            RadioButtonList1.Items.Add(New ListItem("forth", "4"))
            RadioButtonList1.Items.Add(New ListItem("sixth", "6"))
        Else
            RadioButtonList1.Items.Add(New ListItem("first", "1"))
            RadioButtonList1.Items.Add(New ListItem("second", "2"))
            RadioButtonList1.Items.Add(New ListItem("third", "3"))
            RadioButtonList1.Items.Add(New ListItem("forth", "4"))
            RadioButtonList1.Items.Add(New ListItem("fifth", "5"))
            RadioButtonList1.Items.Add(New ListItem("sixth", "6"))
        End If

        'set the selected radio button
        For i As Integer = 0 To RadioButtonList1.Items.Count - 1
            If RadioButtonList1.Items(i).Text = selection Then
                RadioButtonList1.Items(i).Selected = True
                Exit For
            End If
        Next

    End Sub

End Class

Hopefully you'll find something helpful in here.