How to set Background image's Scretch and TileMode in Code behind?

Question

Using C#, how to set the Background image's TileMode and Stretch property?

StackPanel1.Background = new ImageBrush(new ....); // OK
StackPanel1.Background = Stretch.Uniform; //this doesn't work...

Answer 1

Need to set the property on the image brush itself.

var imageBrush = new ImageBrush();
imageBrush.Stretch = Stretch.Uniform;
StackPanel1.Background = imageBrush;