title: Stretching dataGridView
body: <p>I want my dataGridView collumns to stretch when I change window size, I added anchor properties to grid view, but it only resizes background, not collumns, how can I do this?
  My problem looks like:
  <img src="https://i.stack.imgur.com/PRp2U.png" alt="small window"></p>
  
  <p><img src="https://i.stack.imgur.com/YNn77.png" alt="big window"></p>