WPF version of Application.OpenForms

Question

I have an application in which I will have to get at another WPF window which is open. In WinForms, I was able to use:

MainWindow main = (MainWindow)Application.OpenForms["MainWindow"];

To be able to access the the form. Now in WPF it does not exist. I have seen the other post on this site which is relevant, however it uses Application.Window which is not contained in the call. I just have :

Current
Equals
GetContentStream
GetCookie
GetRemoteStream
GetResourceStream
LoadComponet
RefrenceEquals
ResourceAssembly
SetCookie

So my question is this, is there a different version for OpenForms, or is there just a different way to go about it.

score 4 · Accepted Answer · answered May 20 '10 at 19:51

4

Try looking at: Application.Current. More specifically, Application.Current.Windows.

answered May 20 '10 at 19:51

Stephen Cleary

437,863
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Thanks for the answer. Would you know how to implement it using a window name vs. a index? – Jacob Saylor May 20 '10 at 22:40
6

I would use LINQ: `Application.Current.Windows.OfType().Where(x => x.Name == "MainWindow").FirstOrDefault()`, which will return a window named "MainWindow" or `null` if no such window is found. – Stephen Cleary May 20 '10 at 22:46

score 0 · Answer 2 · edited Jul 12 '21 at 03:52

0

Window2 wndw = new Window2();
wndw.Owner = this;

foreach (Window w in Application.Current.Windows)
{
    if (w.Name == wndw.Name)
    {
        if (w.IsActive)
        {
            w.Focus();
            return;
        }
        else
        {
            w.Show();
            return;
        }
    }
}

edited Jul 12 '21 at 03:52

Josef

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answered Jul 11 '21 at 17:31

Daniel CT

1

score -1 · Answer 3 · edited Jun 13 '21 at 08:24

I might be late here but just in case someone needs this. If Application.OpenForms is missing on your side, that's because you have to use System.Windows.Forms.Application.OpenForms

For example:

FormCollection fc = System.Windows.Forms.Application.OpenForms;

The fc object contains properties as: Count and InnerList(very useful)

Hope it helps, even if it is 2021, I thought that someone would need this information (I haven't seen it anywhere when I searched for it)

WPF version of Application.OpenForms

3 Answers3

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