How to dynamically resize a textbox in C#

Question

I am new to C# user interface. I have created a window as shown in the first image. But if the user drag the window and make it bigger, I would like for it to make each

Answer 1

The same result can be achieved by using TableLayoutControl with one text box in each cell and then setting anchor property of each control (text boxes and TableLayout) to Left,Top, Right and bottom.