How to use LinearGradientBrush and Background

Question

I'm trying to paint a background of my WPF window using LinearGradientBrush, however my code doesn't work. Here is the code

LinearGradientBrush gradientBrush = new  LinearGradientBrush( Color.FromArgb(0, 209, 227, 250),  Color.FromArgb(0, 170, 199, 238), new Point(0.5, 0), new Point(0.5, 1));
Background = gradientBrush;

Unforunatelly my window is still white. Is it possible to change the Background color of the window using code behind ?

Wish

Both of your Colors are Transparent so the Background will appear as black unless you have AllowsTransparency set to true. I guess you mean to use 255 instead of 0 for Alpha channel. If you try to set that Background in the Windows constructor and you still can't see it, then it's because some other control in your Window (probably a Panel) has another Background set. Try to set it in a Window without any controls in it. – Rolandorolandson

@H.B. No good reason, just started writing it as a comment since the OP said his Window was still White. Probably should have posted an answer instead.. – Rolandorolandson

Answer 1

You are setting the alpha setting also. Use this instead since you want the colour:

LinearGradientBrush gradientBrush = new  LinearGradientBrush( Color.FromRgb( 209, 227, 250),  Color.FromRgb(170, 199, 238), new Point(0.5, 0), new Point(0.5, 1));
Background = gradientBrush;

Gerstein

Answer 2

<Border.Background>
  <LinearGradientBrush StartPoint="0 0" EndPoint="0 1">
    <LinearGradientBrush.GradientStops>
      <GradientStop Offset="0.1" Color="{Binding Path=YourBindColor1}" />
      <GradientStop Offset="1" Color="{Binding Path=YourBindColor2}" />
    </LinearGradientBrush.GradientStops>
  </LinearGradientBrush>
</Border.Background>

//Use binding colors

Autotruck

Answer 3

Setting the Window.Background to a different Brush should work.

Make sure your Background property is not databound to a property via {Binding} directive.

Also, try setting it to a more simpler Brush - for example

Background = new SolidColorBrush(Colors.Black);

Goatsucker

But I need to get a gradient effect. If I use SolidColorBrush it will be just one color – Wish