C#: Does ResumeLayout(true) do the same as ResumeLayout(false) + PerformLayout()?

Question

I have looked at the generated designer code of `Form`s and `UserControl`s, and in the `InitializeComponent()` method they always start with ``` this.SuspendLayout(); ``` and end with ``` this.ResumeLayout(false); this.PerformLayout(); ``` But from what I can see in the msdn documentation of those methods, wouldn't ending with ``` this.ResumeLayout(true); // Or just this.ResumeLayout() ``` do the exact same thing? Or am I missing something here? Asking because I will be adding a bunch of controls in a different method, and thought I should do the suspend-resume routine to be nice and efficient. But can't figure out what the reason for those two method calls are when you can seemingly just use one...

Accepted Answer

Using reflector:

```
this.ResumeLayout() is equal to this.ResumeLayout(true)
```

But

```
this.ResumeLayout(true) is not equal to this.ResumeLayout(false) + this.PerformLayout()
```

Reason: When ResumeLayout is called with false, there is a control collection that is looped through and the LayoutEngine calls InitLayout on each of the controls in the layout.

C#: Does ResumeLayout(true) do the same as ResumeLayout(false) + PerformLayout()?

Solution

Problem