How to close current window (in Code) when launching new Window
Just do this:
this.Close();
SignInWindow signIn = new SignInWindow();
signIn.ShowDialog();
bear in mind that will actually close the MainWindow
. If all you're really trying to do is hide it, then do this:
this.Hide();
SignInWindow signIn = new SignInWindow();
signIn.ShowDialog();
this.Show();
That will hide the MainWindow
while the login form is up, but then show it again when it's complete.
Okay, so apparently you're launching this form from a static class
that is outside the form. That would have been pretty relevant information. But a solution would be this:
var w = Application.Current.Windows[0];
w.Hide();
SignInWindow signIn = new SignInWindow();
signIn.ShowDialog();
w.Show();
You can try this:
SignInWindow signIn= new SignInWindow();
Application.Current.Windows[0].Close();
signIn.ShowDialog();