Resolved Multiuse of menus

[aaaron]

Un-commenting the top items seems to prove a menu item can only be on one menu at a tie.

Un-commenting the lower items gives an error message - I don't know why.

On the form

Public Class Form1
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles Me.Load

        'This appears to work but the MenuItes are removed from the ContextMenu
        'Appears that a menu item can nt be on two menus
        'For i As Integer = 0 To ControlTextEditor_1.GetContextMenuStripGeneralItems.Count - 1
        '    MenuStrip_ForDisply.Items.Add(ControlTextEditor_1.GetContextMenuStripGeneralItems(i))
        'Next

        'This give a modifying collection error - do not know why seeing that GetContextMenuStripGeneralItems is not  MenuStrip_ForDisply.Items
        'For Each z As ToolStripMenuItem In ControlTextEditor_1.GetContextMenuStripGeneralItems
        '    MenuStrip_ForDisply.Items.Add(z)
        'Next

    End Sub
End Class

On the UserControl code

  Public ReadOnly Property GetContextMenuStripGeneralItems() As ToolStripItemCollection
        Get
            Return ContextMenuStrip_General.Items
        End Get
    End Property

Looking for insight.

Do you believe a menuitem can only be on one menu at a time?

Why the error message from the second group?

Do you know where there is an example of multiuse of menus?

The entire solution is attached



PS I know I can do this:
Me.ToolStripMenuItem_ForDisplay_TextEditor.DropDown = ControlTextEditor_1.GetContextMenuStripGeneral

 

[JohnH]

ToolStripItem Class (System.Windows.Forms)

Represents the abstract base class that manages events and layout for all the elements that a ToolStrip or ToolStripDropDown can contain.

docs.microsoft.com

Note A given ToolStripItem cannot have more than one parent ToolStrip. You must copy of the ToolStripItem and add it to other ToolStrip controls.

Un-commenting the top items seems to prove a menu item can only be on one menu at a tie.

Un-commenting the lower items gives an error message - I don't know why.

True. Because adding the item to another menu removes it from the current collection = collection change while iterating.
It is easy to copy items/branches of items in designer:

How to: Copy ToolStripMenuItems - Windows Forms .NET Framework

If you're adding items in code it is also easy to create two items instead of one.
The same event handler can be used for both copies.

 

[aaaron]

Note A given ToolStripItem cannot have more than one parent ToolStrip. You must copy of the ToolStripItem and add it to other ToolStrip controls.

I think this means: copy the code at design time (not copy at run time).

I wouldn't know how to do it at run time.


EDIT: Check link