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How to display contextmenu only for certain nodes when right clicked?

Platform: WinForms |
Control: TreeViewAdv |
Published Date: April 30, 2011 |
Last Revised Date: July 10, 2014

 

The context menu can be displayed for certain nodes, by setting the menuItem's Visiblity to true in the contextMenu1_Popup event handler for that particular nodes.

C#

private void contextMenu1_Popup(object sender, System.EventArgs e)

{

this.rightMouseDownNodeCached=this.treeViewAdv1.RMouseDownNode;

// This will be null if the user clicked in the empty portion of the tree.

this.treeViewAdv1.SelectedNode= this.treeViewAdv1.RMouseDownNode;

if(this.treeViewAdv1.RMouseDownNode == null)

{

this.menuItem1.Visible = false;

}

else

{

if(treeViewAdv1.SelectedNode.Text=="Node0" ||treeViewAdv1.SelectedNode.Text=="Node2"||

treeViewAdv1.SelectedNode.Text=="Node4"||treeViewAdv1.SelectedNode.Text=="Node6")

{

this.menuItem1.Visible = true;

}

else

{

this.menuItem1.Visible = false;

}

}

}

VB

Private Sub contextMenu1_Popup(ByVal sender As Object, ByVal e As System.EventArgs)

Me.rightMouseDownNodeCached=Me.treeViewAdv1.RMouseDownNode

' This will be null if the user clicked in the empty portion of the tree.

Me.treeViewAdv1.SelectedNode= Me.treeViewAdv1.RMouseDownNode

If Me.treeViewAdv1.RMouseDownNode Is Nothing Then

Me.menuItem1.Visible = False

Else

If treeViewAdv1.SelectedNode.Text="Node0" OrElse treeViewAdv1.SelectedNode.Text="Node2" OrElse treeViewAdv1.SelectedNode.Text="Node4" OrElse treeViewAdv1.SelectedNode.Text="Node6" Then

Me.menuItem1.Visible = True

Else

Me.menuItem1.Visible = False

End If

End If

End Sub

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