trying first time WPF user. I read through some WPF layout docs but am not getting the hang of the layout of buttons. I’m trying to get the layout below — where there’s a button in the lower left corner and two in the lower right.
Can this be done with a single StackPanel? I tried unsuccessfully with this along with the HorizontalAlignment attributes of the buttons.
Is it more appropriate to be using a 1 row, 2 column grid, with each cell having a StackPanel?
Any suggestions much appreciated, thanks!

Personally, I tend to prefer doing this with a Grid, ie:
This will cause the 2nd & 3rd columns to fit their contents, and the first to fill the rest of the space. If you place each button in the appropriate column, you’ll get that layout. (Note that you’ll likely want to adjust the sizing and margins on the buttons to get nice spacing, as well.)