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How to raise masterpage event from dynamic usercontrol?

I have a masterpage that dynamically loads a usercontrol. The masterpage has a public method that raises a public event. I want the usercontrol to call that method to raise the event so the web page can respond to it. Unfortunately, I can't get my usercontrol to recognize the masterpage method. It says my method is not a member of System.Web.UI.MasterPage.

Here's my masterpage code:

Partial Class Master_Mobile
    Inherits System.Web.UI.MasterPage

    Public Event Login()
    Public Sub RaiseLogin()
        RaiseEvent Login()
    End Sub

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        ' Create Dynamic Controls
        If ShowLogin And Me.MasterLogin.Controls().Count = 0 Then
            Dim ucLogin As UserControl = LoadControl("~/UserControls/Login.ascx")
            Me.MasterLogin.Controls.Add(ucLogin)
        End If
    End Sub

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Here's my usercontrol code:

    Protected Sub btnSubmit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
        Call Page.Validate()

        If Page.IsValid Then
            ' Return to caller
            Call Page.Master.RaiseLogin()     ' THIS LINE FAILS
        End If
    End Sub

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What's the correct way to call the public method from this dynamically loaded usercontrol? Thanks in advance.

YZlat

http://forums.asp.net/p/1331400/2674329.aspx

ZekeLA

ASKER

I don't have nested master pages and that link shows how to find a control from a page which is not what I have. Please explain how that applies to my situation.

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YZlat

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kris_per

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ZekeLA

ASKER

kris, I can't strongly type it that way because it's a usercontrol. <%@ MasterType virtualPath="~/MasterPage.master"%> doesn't work for the Control directive. I tried <%@ Reference Control="~/Layouts/MyMaster.master"%> but that still doesn't expose the my master page class. When I use the object browser I can't find my master page class in my project's namespace.

ZekeLA

ASKER

Yzlat, I don't understand your suggestion. I don't need to assign the masterpage. it is the usercontrol that can't find the master page's method. Not the page. It makes no sense to search for the control from within the control. Can you be more specific and / or reference the original code I posted?

kris_per

@ MasterType directive can be added only in content page file. i think it is not for controls....below is some code with delegates/events for your code..see if this helps....


In User control class file:

     Delegate Function LoginEvent() As String

     Public Dim LoginEventHandler As LoginEvent

     Protected Sub btnSubmit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
        Call Page.Validate()

        If Page.IsValid Then
            ' Return to caller
            ' Call Page.Master.RaiseLogin()     ' THIS LINE FAILS
            LoginEventHandler ( ) ' CALL DELEGATE function
        End If
    End Sub




in masterpage code :

Partial Class Master_Mobile

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        ' Create Dynamic Controls
        If ShowLogin And Me.MasterLogin.Controls().Count = 0 Then
            Dim ucLogin As UserControl = LoadControl("~/UserControls/Login.ascx")
            ucLogin.LoginEventHandler = New LoginEvent(AddressOf Login) ' ADD THIS LINE - TO PASS Login function as delegate
            Me.MasterLogin.Controls.Add(ucLogin)
        End If
    End Sub

    Public Function Login()  As String
        ' this is the function that will get called when submit button is clicked in user control
    End Sub

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ZekeLA

ASKER

I finally figured out my problem. I didn't include the usercontrol reference on my master page. Once I added

<%@ Register TagPrefix="uc1" TagName="Login" Src="~/UserControls/Login.ascx" %>

I was able to change my master page code as shown below. Thanks to both for your guidance and suggestions.

    Public Event MasterLoggedIn(ByVal sender As Object, ByVal e As EventArgs)

    Protected Sub ProcessLogin(ByVal sender As Object, ByVal e As System.EventArgs)
         RaiseEvent MasterLoggedIn(Me, New EventArgs())
    End Sub

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        ' Create Dynamic Controls
        If ShowLogin Then
            Call AddLogin()
        End If

        ' Content Visibility
        Me.MasterContent.Visible = Not ShowLogin
        Me.MasterLogin.Visible = ShowLogin
    End Sub

    Protected Sub AddLogin()
        Dim uc As MyNamespace.UCLogin = LoadControl("~/UserControls/Login.ascx")
        Me.MasterLogin.Controls.Add(uc)
        AddHandler uc.LoggedIn, AddressOf ProcessLogin
    End Sub

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