Dialog Reuse?

[csleech]

Hi All,

I have a form that runs a foreach on a list. And during this I want each item in the list to show a dialog form (while running a background worker to run some changes). The problem is that I get the following error.

Cannot set Visibility or call Show or ShowDialog after window has closed.

What is the best method to get around this error? The dialog is basically a continuous progressbar that has text updated based on the background work being done. I want this because each item in the list will pace a value to the progressbar dialog form.

[jmcilhinney]

Show us the code you're using.

[jmcilhinney]

Hmmm... just did a quick test and apparently closing a WPF Window that was displayed using ShowDialog disposes it. The equivalent action in WinForms does not dispose the form, so that's a difference.

[chris128]

Hmmm... just did a quick test and apparently closing a WPF Window that was displayed using ShowDialog disposes it. The equivalent action in WinForms does not dispose the form, so that's a difference.

Yeah that and also you cant actually dispose a WPF window - you just call Close and the garbage collector sorts it out. I think the fact that dialog forms dont stay open is a good thing because it never made sense to me for them to act any differently to when you show the form in non-dialog mode, but I dont like the fact that you cant manually dispose the window.

As for the OP's original problem - you must be showing the window and then closing it and then trying to show it again or something... this is all you should be doing:

Dim SomeWindow As New MainWindow
SomeWindow.ShowDialog()