Master control used on Content page

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Hello,
I loved your article about "Inside Master Page". I now can hide a panel that I use for a menu.

My question is that I have placed a dropdownlist on the master and when I make a change, I want specific things to occur depending on the page that I am on.

Here is the code that I use to have on the content page when the dropdownlist was there as well.

 Protected Sub ddlPrintGroup_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ddlPrintGroup.SelectedIndexChanged
        On Error GoTo sub_error
        Dim strSub As String
        strSub = "ddlPrintGroup_SelectedIndexChanged"
        '================================================================================
        myddlLocs.SelectedIndex = -1
        PreviewReport()
        '================================================================================
sub_exit:
        Exit Sub
sub_error:
        If mytxtMsg.Text = "" Then
            mytxtMsg.Text = "Error in Sub " &amp; strSub &amp; " - " &amp; Err.Number &amp; " : " &amp; Err.Description
        End If
        mytxtMsg.Visible = True
    End Sub

I have added a variable called the following at the top of the class:

Public myddlPrintGroup As DropDownList

In the Page_Init, I have the following:

myddlPrintGroup = CType(myMaster.FindControl("ddlPrintGroup"), DropDownList)

How do I get the subroutine ddlPrintGroup_SelectedIndexChanged to look at the myddlPrintGroup that is on the master page?

Thanks!
Eddi Rae

Posted 22-Dec-09 11:20am

Eddi Rae

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Christian Graus · Answer 1 · 2009-12-22T11:23:00

wrote:
I loved your article about "Inside Master Page".

If you want to talk to an article author, there's a forum under the article.

Use a delegate to hook the event up in each page that you write.

wrote:
myddlPrintGroup = CType(myMaster.FindControl("ddlPrintGroup"), DropDownList)

Instead of nasty code like this, you should provide a custom base page class, which strongly types your master page in a property, then you can expose things like delegates and properties on it.