TreeView.TreeNode.Image.Refresh();

[Mark Jerde]

VS .NET 2003, Googling, msdn searching not successful.

I'm using the images of nodes of a TreeView to show the Pass/Fail results of
several tests. The tests are a little slow so I would like to Refresh()
between each test. This works:

MyTreeView.Refresh();

.... but it causes a lot of flicker. The node text does not change. Only
the TreeNode.ImageIndex changes.

Is there a way to refresh just the image portion of a TreeNode?

Thanks.

-- Mark

[Mattias Sjögren]

Mark,

Is there a way to refresh just the image portion of a TreeNode?

You can try something like

MyTreeView.Invalidate(someNode.Bounds);
MyTreeView.Update();

Unlike Refresh this will only invalidate and redraw that one node's
area. You can shrink the rectangle returned by Bounds to only cover
the image if you can figure out where exactly the image is located.
Mattias

--
Mattias Sjögren [C# MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.

[Mark Jerde]

Mattias -- Excellent! Thanks!

-- Mark

"Mattias Sjögren" <ma********************@mvps.org> wrote in message
news:ey****************@TK2MSFTNGP12.phx.gbl...

Mark,

Is there a way to refresh just the image portion of a TreeNode?

You can try something like

MyTreeView.Invalidate(someNode.Bounds);
MyTreeView.Update();

Unlike Refresh this will only invalidate and redraw that one node's
area. You can shrink the rectangle returned by Bounds to only cover
the image if you can figure out where exactly the image is located.
Mattias

--
Mattias Sjögren [C# MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.