Using the RadAjaxManagerProxy inside a WebUserControl

[max]

Hi, I'm populating a page dynamically with usercontrols, the user control is loaded without problem but the ajaxrequest or a simple postback inside the user conteol is not working..

This is an simple exsample....what's wrong with that?

ASPX:

        <asp:ScriptManager ID="ScriptManager1" runat="server">
        </asp:ScriptManager>

        <asp:Button ID="Button1" runat="server" Text="Button" />

        <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>

        <asp:Button ID="Button2" runat="server" Text="Load WebUserControl" />

    <asp:Panel ID="Panel1" runat="server">
    </asp:Panel>

        <Telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
            <AjaxSettings>
                <Telerik:AjaxSetting AjaxControlID="Button1">
                    <UpdatedControls>
                        <Telerik:AjaxUpdatedControl ControlID="Label1" />
                    </UpdatedControls>
                </Telerik:AjaxSetting>
            </AjaxSettings>
        </Telerik:RadAjaxManager>

ASPX VB

    Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Label1.Text = DateTime.Now.ToString()
    End Sub

    Private Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click
        'Panel1.Controls.Add(LoadControl("WebUserControl1.ascx"))
        LoadUserControl("WebUserControl1.ascx")
    End Sub


    Public Sub LoadUserControl(ByVal controlName As String)
        If Not (LatestLoadedControlName Is Nothing) Then
            Dim previousControl As Control = Panel1.FindControl(LatestLoadedControlName.Split("."c)(0))
            If Not (previousControl Is Nothing) Then
                Me.Panel1.Controls.Remove(previousControl)
            End If
        End If
        Dim userControlID As String = controlName.Split("."c)(0)
        Dim targetControl As Control = Panel1.FindControl(userControlID)
        If targetControl Is Nothing Then
            Dim userControl As UserControl = CType(Me.LoadControl(controlName), UserControl)
            'slashes and tildes are forbidden
            userControl.ID = userControlID.Replace("/", "").Replace("~", "")
            Me.Panel1.Controls.Add(userControl)
            LatestLoadedControlName = controlName
        End If
    End Sub


    Private Property LatestLoadedControlName() As String
        Get
            Return CStr(ViewState("LatestLoadedControlName"))
        End Get
        Set(ByVal value As String)
            ViewState("LatestLoadedControlName") = value
        End Set
    End Property

ASCX

<asp:Button ID="Button1" runat="server" Text="Button" />

<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>

<telerik:RadAjaxManagerProxy ID="AjaxManagerProxy1" runat="server">
    <AjaxSettings>
        <Telerik:AjaxSetting AjaxControlID="Button1">
            <UpdatedControls>
                <Telerik:AjaxUpdatedControl ControlID="Label1" />
            </UpdatedControls>
        </Telerik:AjaxSetting>
    </AjaxSettings>
</Telerik:RadAjaxManagerProxy>

ASCX VB

    Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click

        Label1.Text = DateTime.Now.ToString()

    End Sub

[SamJ]

Hi max,

Try adding the ajax settings for the user control dynamically, on Page_PreRender event of the user control:

Protected Sub Page_PreRender(sender As Object, e As EventArgs)
    Dim manager As RadAjaxManager = RadAjaxManager.GetCurrent(Page)
    manager.AjaxSettings.AddAjaxSetting(Button1, Label1)
End Sub

Let me know if this works in your case.

Thanks,
SamJ

[max]

It doesn't work..
On the first click nothing change and the usercontrol disappears on the second click..

[SamJ]

Hi max,

From what you said I think that you should have missed something when loading your user controls dynamically. Can you check out this link and see if this is the issue?

Let me know how it goes.

[max]

I forgot this piece of code..

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        If Not String.IsNullOrEmpty(Me.LatestLoadedControlName) Then
            LoadUserControl(Me.LatestLoadedControlName)
        End If

    End Sub

Now I'ts working..
Thanks