Mahapps.metro: metrowindow topmost property binding issue

[sg2707]

I am using MahApps for my WPF application and when the metro window is used, the TopMost property is not able to bind. If i set it as a static value it works though.

<Controls:MetroWindow x:Class="SabreContractSearch.Views.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:prism="http://prismlibrary.com/"
        xmlns:Controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
        xmlns:iconPacks="http://metro.mahapps.com/winfx/xaml/iconpacks"
        prism:ViewModelLocator.AutoWireViewModel="True"
        Topmost= "{Binding Pin}" Title="{Binding Title}" Height="350" Width="525" Name="FrmMainWindow" >

Pin is a boolean property here.

If i remove the metro window and use the normal window tag for WPF, it works. Is this a bug?

[punker76]

@sg2707 This should be working in v1.6.5 and current source. The main demo has a Binding to this property via Menu Item. So maybe you can create or upload this simple sample here on GitHub? Thx.

[sg2707]

In this example it is binding the menu item to the Window property, What I am trying is to bind the viewmodel property to the window property.

Topmost= "{Binding Pin}"

[timunie]

Hi @sg2707
I think there should be no difference between Binding to MenuItem and ViewModel. It would be useful to have a look into your App or a sample App. I think there is an issue in the MVVM.

Happy coding,
Tim

[sg2707]

As i mentioned in the issue, if i change the metro window to WPF window, there is no issue. same code works. Check attachment.

Press

ContractSearch.zip

[timunie]

@sg2707 I can confirm the issue with your repro.

[punker76]

@sg2707 I found the bug. It happens at WindowChromeBehavior from ControlzEx. The Binding will be broken by our Topmost hack. I will fix this.

[punker76]

@sg2707 It's fixed now and available with ControlzEx v4.2.2