How do i change the image on a treeview when clicking the open/Expand button

Question

i have a treeview that is using a HeaderToImageConverter class when the program runs the directory images and folders and files all show as expected, but when i expand a folder i cannot work out how to change the closed folder image to an open folder image.

Answer 1

Hello there,

1). Add an ImageList Control to your WinForm.

2). Populate the ImageList with the pictures/icons you wish to change/display in response to what the user does at run-time with the TreeView, such as expanding, or collapsing nodes.

3). Assign the 'ImageList Control to the 'ImageList property of the 'TreeView

Hope this resolves your Query !!

--If the reply is helpful, please Upvote and Accept it as an answer--