How to remove white strip on top of WPF window with WindowStyle=None?

Question

Is it possible to remove the white strip on top of WPF window with Window Style=None. XAML and Window is shown in the screenshot:

Answer 1

What you are seeing in white is the re-size border. You can remove that and still make the window resizable by setting ResizeMode="CanResizeWithGrip" AllowsTransparency="True"

If you dont want to resize at all then do this - ResizeMode="NoResize", again you wont see the border but you cant resize.

<Window x:Class="HandsOnSolution.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525" Background="Green" WindowStyle="None" ResizeMode="CanResizeWithGrip" AllowsTransparency="True">
    <Grid>
    </Grid>
</Window>

Edit

Good point by @devuxer, if you are interested in dragging you can add this piece of code to the window mouse down event

<Window MouseLeftButtonDown="Window_MouseLeftButtonDown"/>

//code behind
private void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
    DragMove();
}

Answer 2

I had been hunting for a solution for a couple of days now, in simple words this link held the answer to my queries

though the code snippet that did the magic was:

<Setter Property="WindowChrome.WindowChrome">
    <Setter.Value>
        <WindowChrome CaptionHeight="0"
            CornerRadius="2"
            GlassFrameThickness="0"
            NonClientFrameEdges="None"
            ResizeBorderThickness="3"/>
    </Setter.Value>
</Setter>

I just added the above property setter to the custom Window Style.

Hope that helped :)

Answer 3

A much simplified code, acting on only one property:

<WindowChrome.WindowChrome>
    <WindowChrome CaptionHeight="0"/>
</WindowChrome.WindowChrome>

Answer 4

I added this piece of code:

<WindowChrome.WindowChrome>
    <WindowChrome GlassFrameThickness="0,0,0,1" CornerRadius="0" />
</WindowChrome.WindowChrome>

inside <Window> paste here <Window/> and it helped :)