CODEWITHSUNDEEP
wpfvb.net
WPFcitizen
WPFcitizen

Reputation: 137

Only one windows should be open at once in WPF?

I am developing a WPF project in vb.net and have multiple windows in it. When user selects a menu item a new windows opens and the problem is when the user clicks on other menu item the current window should close by itself. How do i achieve it? Thanks!

Upvotes: 0

Views: 1654

Answers (2)

Silvermind
Silvermind

Reputation: 5944

I think you mean this based upon your comment:

Class MainWindow 

  Public Win3 As Window3 = New Window3()

  Private Sub Button1_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button1.Click
    Win3.Show()
    Me.Close()
  End Sub

End Class

Upvotes: 1

Kyra
Kyra

Reputation: 5417

There are two ways to do this:

If the menu items share the same form then in the form create a subroutine, that you call instead of new, that checks if it is already shown/created and if not opens (as you already have). If it is open reload with the new information.

Otherwise before opening the new form go though the open forms (shown below from this website in C#):

FormCollection fc = Application.OpenForms;

foreach (Form frm in fc) {
         //iterate through
}

For each form check if it's name is equal to one of the menu items and if it is close it (after saving if required). Then after you exit the for loop you open the new menu item.

Upvotes: 0

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