.net - WPF: How do I obtain the size of the visible portion of a TextBox in a TreeView (see image)? -

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is there way size of visible portion of wpf ui control, textbox, in treeview?

for example, in image want size of viewable part of pinkish textbox: enter image description here

isn't duplicated?

how size of visible part of wpf usercontrol?

anyway: can via iscrollinfo


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