C # layout using the control's Dock attribute in winform

To achieve the following layout, you can set the control's Dock attribute to achieve the effect.

1. Drag a panel control, a label control (placed in the panel), and a treeView control to TestForm.

2. Set the panel's Dock attributeTop(Set the BorderStyle attribute to FixedSingle, which looks more elegant), set the Dock attribute of treeViewFill

3.You need to put the panel in TestForm first.First, the treeView will make the treeView fill the TestForm and be overwritten by the panel placed later, as shown below:

4. You can use this method to implement similar la S (such as left and right la S and left unchanged ).

5. You can also use the SplitContainer control to implement similar layout.