Properties order in Margin

Margin="1,2,3,4"

1. Left,
2. Top,
3. Right,
4. Bottom

It is also possible to specify just two sizes like this:

Margin="1,2"

1. Left AND right
2. Top AND bottom

Finally you can specify a single size:

Margin="1"

1. used for all sides

The order is the same as in WinForms.