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Asked: May 10, 20262026-05-10T19:34:55+00:00 2026-05-10T19:34:55+00:00

I have a TreeView windows forms control with an ImageList , and I want

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I have a TreeView windows forms control with an ImageList, and I want some of the nodes to display images, but the others to not have images.

I don’t want a blank space where the image should be. I don’t want an image that looks like the lines that the TreeView would draw if it didn’t have an ImageList. How do I get it to draw images for some items and not others, without resorting to clumsy hacks like that?

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  1. 2026-05-10T19:34:56+00:00Added an answer on May 10, 2026 at 7:34 pm

    I tried this once and I don’t think it is possible.

    If you try to set both ImageKey and ImageIndex to ‘not set’ values the control just defaults ImageIndex to 0. The following code:

    treeView.ImageKey = 'Value'; Debug.WriteLine(treeView.ImageIndex); treeView.ImageKey = null; Debug.WriteLine(treeView.ImageIndex); treeView.ImageIndex = -1; Debug.WriteLine(treeView.ImageIndex); 

    Produces output:

    -1 0 0 

    This kind of tells you that the control developers wanted to make sure that there was always a default image. That just leaves you with the hack options I’m afraid.

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