I have a WPF window that I am launching from inside of a winform app. I only want to allow once instance of that WPF window to be open at a time, and not warn that user if they try to open it again.
I am having a problem however trying to search for that WPF window being open because the window is being launched from a winform. What I normaly do is when searching for a winform, I search for any instances of that winform existing in the Application.Current.OpenForms
, and when in WPF I search for Application.Current.Windows
The problem I have is that System.Windows.Application.Current
is null when launched from inside of a winform, so I can't search for the WPF window that way. Is there any better way of searching for an existing instance of an open window?
My Code:
if (System.Windows.Application.Current != null)
{
foreach (System.Windows.Window win in System.Windows.Application.Current.Windows)
{
if (win is frmCaseWpf)
{
MessageBox.Show("You may have only one active case open at a time.", "Open Case",
MessageBoxButtons.OK,
MessageBoxIcon.Stop);
win.WindowState = System.Windows.WindowState.Normal;
win.Focus();
win.Activate();
return;
}
}
}