post back control outside update panel

[asemon83]

i have a radio button list out of update panle and i have a button in update panle and i want to change selected value my radio when i click on button

[Rabbit]

We need to see your code.

[asemon83]

protected void MyLinkButton_Click(object sender, EventArgs e)
    {
        rdo.SelectedValue = "2";
       
    }
///////////
 <div>
        <asp:RadioButtonList ID="rdo" runat="server" AutoPostBack="True" RepeatDirection="Horizontal">
            <asp:ListItem Value="1" Selected="True">1</asp:ListItem>
            <asp:ListItem Value="2"></asp:ListItem>
        </asp:RadioButtonList>
        <asp:ScriptManager ID="sm1" runat="server">
        </asp:ScriptManager>
        <asp:UpdatePanel ID="up1" runat="server">
            <ContentTemplate>
                <%= DateTime.Now %>
                <asp:LinkButton ID="MyLinkButton" runat="server" Text="Click me" OnClick="MyLinkButton_Click" />
            </ContentTemplate>
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="MyLinkButton" EventName="Click" />
            </Triggers>
        </asp:UpdatePanel>
        <asp:PlaceHolder ID="plc" runat="server"></asp:PlaceHolder>
        <br />
        This will refresh only first page load time:
        <%= DateTime.Now %>
    </div>

[Frinavale]

Place the RadioButtonList inside the UpdatePanel.
The UI will not update the selected value unless it is part of the same asynchronous request.

-Frinny