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Can TreeView Contorl automatically focus and un-focus by user right-clicking on a node without changing it's selected node?

Posted on 2006-11-05
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Last Modified: 2010-04-16
Is there a property or do I have to write additional code for this behavior?  Basicly, The behavior like in Active Directory Users and Computer, if the root node is selected and has focus but I right click on like the Users folder, the Users folder would then be highlited and a pop-up menu appears pertains to the Users folder.  However, when I'm done wtih the pop-up of at this point I click on the empty area of the left pane, the root node would then again have the focus and it never lost the status as the "selected node"

Thanks.
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Question by:lapucca
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Expert Comment

by:Expert1701
ID: 17879208
The TreeView control in version 2.0 of the .NET Framework works that way.
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Author Comment

by:lapucca
ID: 17879273
I am using vs2005, .net 2.0.  Currently in my application's TreeView control, the selectedNode isn't changed when I right-click on another node and the pop-up menu for the clicked-node does pop up.  But, the right-clicked Node doesn't get the focus (The node is not highlited).  So it's looking weird with the selectedNode high-lited but my mouse is over the clicked-node.

Is there a property that I need to set or un-set?  Thanks.
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Expert Comment

by:Expert1701
ID: 17879293
Oh sorry, I did not read carefully enough: I thought the functionality you were looking for was the returning of focus to the root node (which it does), not the highlighting of the intermediate value.  When I set the HideSelection property to false, the TreeView works exactly like the Active Directory Users and Computers one.
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LVL 11

Expert Comment

by:Mihai Stancescu
ID: 17880308
You can try this:

On the MouseDown event for the tree put this:

private void tree_MouseDown(object sender, MouseEventArgs e)
{
     if (e.Button == MouseButtons.Right && e.Clicks == 1) //make sure is only one right click... you can remove after &&
     {
         TreeNode aNode = tree.GetNodeAt(Cursor.Position.X,Cursor.Position.Y);
          if (aNode != null)
          {
                tree.SelectedNode = aNode;
          }
     }
}

Hope helps.
Regards,
Mishu
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Author Comment

by:lapucca
ID: 17883399
I do have my HideSelection set to false.  When I right click on another node, the clicked-node does gain focus for a split seond when it's clicked but lose it back to the selected-node when the pop-up menu opens up.  The AD User and Computer snap-in retains the fous until the pop-up is closed or selected-menu action is done and performed.  Thanks.
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Accepted Solution

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Expert1701 earned 500 total points
ID: 17885257
Your ContextMenuStrip must be assigned to each TreeNode, not the TreeView control.
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Author Comment

by:lapucca
ID: 17887063
Oh, I can assign a contextMenustrip to a TreeNode?  Do I do this in the designer and how?  Currently, I'm calling the context menus when the node is clicked with button.  Maybe that is the problem with the focus?  Thanks.
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Expert Comment

by:Expert1701
ID: 17887327
You can only do this through the designer if your nodes are created at design-time.
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Author Comment

by:lapucca
ID: 17891872
Ah, it does work that way.  I was able to assign it programmtically and it now works the way it should  thanks.
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