Question

How to Loop through all Nodes in a MenuStrip control

Asked by: 16spam16

In VB6 I was able to loop through all the Items in the MainMenu Control quite easily because VB6 didnt break it down parent/child nodes, they were just listed. See my code below on how I cycled through them.
All I had to do was loop through the "oObject.Name" to access all the items.

Now in VB.net I am stumped how I achieve the same function.
I need to convert the provided Function to VB.net
I know somehow i have to integrate "ToolStripDropDownItem" but I am not sure how to do this..

Any help with be greatly appreciated

Private Function MenuItemIndentOnGrid(oName As String, oIndentNbr As Long) As String
   Dim oObject As Object
   MenuItemIndentOnGrid = ""
   With frmMain
      For Each oObject In frmMain
         If TypeOf oObject Is Menu Then
            If oObject.Name = oName Then
               'Do Something
               Exit For
            End If
         End If
      Next
   End With
End Function

                                  
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Asked On
2009-10-28 at 13:53:59ID24852711
Topics

Miscellaneous Programming

,

Microsoft Visual Basic.Net

,

Visual Studio

Participating Experts
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Comments
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Answers

 

by: VBRocksPosted on 2009-10-28 at 15:23:48ID: 25688933

Something like this:

        For Each item As ToolStripItem In Me.MenuStrip1.Items

            Debug.WriteLine(item.Text)

        Next

 

by: 16spam16Posted on 2009-10-28 at 15:32:37ID: 25688991

VBRocks > that would only handle for the first tier of menu items.

 

by: VBRocksPosted on 2009-10-28 at 15:36:06ID: 25689012

ok.  I'll have to play with it...

 

by: VBRocksPosted on 2009-10-28 at 15:38:17ID: 25689026

 

by: 16spam16Posted on 2009-10-28 at 15:47:44ID: 25689088

Thanks I will take a closer look at that when I get back to office tomorrow morning and can apply it to my application and see how it works.
Thanks for the link.

I had done some playing around, and I came close to figuring it out, but my code would have to had known how many tiers/childnodes of menu items I had....which is not good programming. I knew I needed a series of loops. just didnt know how to arrange them...I will post tomorrow morning on my success or failure. Thanks again.

 

by: Idle_MindPosted on 2009-10-28 at 15:56:03ID: 25689139

Right...you'd need to use a RECURSIVE method to iterate thru all of the items...  =)

 

by: 16spam16Posted on 2009-10-29 at 06:16:14ID: 25693255

OK, I am getting closer.

Func MenuItemIndentOnGrid starts the recursive lookup on the mainmenu.

Func search is the recursive part.

In the func search when I reach this line:
strValue = strValue & tsi.Tag

I need to exit/get out of the recursive loop and continue on with an UPDATE statement.

So in laymens terms...If I find the matching menu item, "get the hell out" ...haha only if programming was written that way.

What I am getting thus far is all the TOP level items and the last menu item in ever top level.
Does any of that make sense?

    Private Function MenuItemIndentOnGrid(ByRef oName As String, ByRef oIndentNbr As Integer) As String
        Dim oObject As System.Windows.Forms.MenuStrip
 
        MenuItemIndentOnGrid = ""
        oObject = frmMain.mmMainMenu
 
        For Each item As ToolStripMenuItem In oObject.Items
            MenuItemIndentOnGrid = search(item, oName, oIndentNbr)
            If MenuItemIndentOnGrid <> "" Then
                Exit For
            End If
        Next
 
'at this point i use the string that I found and perform an update statement.
    End Function
 
    Private Function search(ByVal tsi As ToolStripItem, ByRef oName As String, ByRef oIndentNbr As Integer) As String
        Dim strValue As String = ""
        If tsi.GetType().Equals(GetType(ToolStripMenuItem)) Then
            For Each item As ToolStripItem In DirectCast(tsi, ToolStripMenuItem).DropDownItems
                strValue = search(item, oName, oIndentNbr)
            Next
 
            If tsi.Name = oName Then
                If oIndentNbr > 2 Then
                    strValue = Space((oIndentNbr - 2) * 4)
                End If
                strValue = strValue & Replace(tsi.Text, "&", "") & vbTab
                strValue = strValue & tsi.Tag
                search = strValue
                Return search
                Exit Function
            End If
        End If
        search = strValue
        Return search
    End Function

                                              
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by: 16spam16Posted on 2009-10-29 at 10:24:21ID: 25695990

I figured it out.
Here is the working code, and the ref where i found it:

http://social.msdn.microsoft.com/Forums/en-US/vbgeneral/thread/1a7f655b-fd14-4af9-b843-28432d8ce7fb

Thanks for the initial help.

    Public Sub GetMenues(ByVal Current As ToolStripItem, ByRef menues As List(Of ToolStripItem))
        menues.Add(Current)
        If TypeOf (Current) Is ToolStripMenuItem Then
            For Each menu As ToolStripItem In DirectCast(Current, ToolStripMenuItem).DropDownItems
                GetMenues(menu, menues)
            Next
        End If
    End Sub
 
    Private Function MenuItemIndentOnGrid(ByRef oName As String, ByRef oIndentNbr As Integer) As String
        Dim oObject As System.Windows.Forms.MenuStrip
        Dim menues As New List(Of ToolStripItem)
 
        MenuItemIndentOnGrid = ""
        oObject = frmMain.mmMainMenu
 
        For Each t As ToolStripItem In oObject.Items
            GetMenues(t, menues)
        Next
 
        Dim msg As String = ""
        For Each t As ToolStripItem In menues
            msg &= t.Name & vbCrLf
 
            If t.Name = oName Then
                If oIndentNbr > 2 Then
                    MenuItemIndentOnGrid = Space((oIndentNbr - 2) * 4)
                End If
                MenuItemIndentOnGrid = MenuItemIndentOnGrid & Replace(t.Text, "&", "") & vbTab
                MenuItemIndentOnGrid = MenuItemIndentOnGrid & t.Tag
                Exit For
            End If
        Next
    End Function

                                              
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by: VBRocksPosted on 2009-10-29 at 10:32:04ID: 25696076

Nice!

 

by: Idle_MindPosted on 2009-10-29 at 10:41:17ID: 25696163

Glad you've got working code.  I've been busy all morning...  =)

20120131-EE-VQP-002

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