[SOLVED] C# WPF Auto Resize Window When Taskbar Height Changed

C# WPF Auto Resize Window When Taskbar Height Changed

I have a WPF window which has these properties:

-ResizeMode=NoResize

-WindowStyle=None

I made every functionality of a normal window but i can't figure out how can i make window auto resize itself(when it's maximized) when taskbar's height changes. (Like Microsoft Visual Studio 2017 Window).

I can manually maximize my window but if I hide taskbar there is an empty space between my window and bottom of screen.

Is there any event fired when working area changes?

Solution

For your problem you can use SystemParameters.WorkArea. Initially set the MaxHeight of your MainWindow.

MaxHeight="{Binding Height, Source={x:Static SystemParameters.WorkArea}}"

Register to the SystemParameters.StaticPropertyChanged in the codebehind of the MainWindow to receive changes and update your window size.

SystemParameters.StaticPropertyChanged += (sender, args) =>
{
    if (args.PropertyName == nameof(SystemParameters.WorkArea))
    {
         this.Dispatcher.Invoke(() =>
         {
             MaxHeight = SystemParameters.WorkArea.Height;
             Height = SystemParameters.WorkArea.Height;
             WindowState = WindowState.Normal;  // Updates the windows new sizes
             WindowState = WindowState.Maximized;
         });
    }
};