Open another window in WPF

Question

Sir

I am new in WPF.

I have a login (frmLogin) WPF window and I want to open a main window (frmMan) when I click a button. But the show method is not appearing in the list. Please advice

Private Sub btnCancel_Click(sender As Object, e As RoutedEventArgs) Handles btnCancel.Click
        End
    End Sub

    Private Sub btnLogin_Click(sender As Object, e As RoutedEventArgs) Handles btnLogin.Click
        If txtUser.Text = "" Then
            MsgBox("Please enter user name..",MsgBoxStyle.OkOnly ,"Stop!")
            Exit Sub
        End If
        If txtPassword.Password = "" Then
            MsgBox("Please enter password..")
            Exit Sub
        End If
        Me.Close()

        frmMain.Show()

    End Sub

    Private Sub frmLogin_Loaded(sender As Object, e As RoutedEventArgs) Handles frmLogin.Loaded
        txtPassword.Password = ""
        txtUser.Text = ""
        txtUser.Focus()
    End Sub
End Class

Here frmMain.show () is not working.

Here is the xaml page for frmMain

<Window x:Name="frmMain" x:Class="frmMain"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="" Height="300" Width="300" ShowInTaskbar="False">
   
</Window>

Regards

Manoj

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Manoj

Answer 1

Hello Manoj Joseph, beings this is a WPF question I am moving this to the WPF forum for better visibility.

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VB Forums - moderator

Answer 2

You are using the class to try to open rather than an instance of the class.

What you need is something like :

Dim formInstance as frmMain = new frmMain()
formInstance.Show()

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Lloyd Sheen

Answer 3

Sir

Thank you for the help.

But  I could open the window in VB just using the code 

frmMain.show()  then why I should declare the instance in WPF?

Regards

Manoj

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Manoj

Answer 4

Remember that VB is the programming language.  It works with both WinForms and WPF.  Using WinForms you can do that but in WPF you can't.  It is always safer to create your own instance and as you have seen in WPF you have to.

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Lloyd Sheen