How to dock to the top and the left

c# panel anchor docking
AidanO picture AidanO · Aug 9, 2010 · Viewed 18k times · Source

With An anchor I can write the following line:

myControl.Anchor = (AnchorStyles.Top | AnchorStyles.Left);

And it will anchor myControl to the left and the top.

Why can't I do the following:

myControl.Dock = (DockStyle.Top | DockStyle.Left);

I can write the above line, but all it does is set the DockStyle to left.

Any thoughts/reasons for this?

Answer

djdd87 picture djdd87 · Aug 9, 2010

The reason you cannot do this is because setting a DockStyle basically docks/fills the entirity of the specified edge.

For example, DockStyle.Left means that the height of the item being docked will always be the height of the container and the the X,Y location will always be 0, 0.

DockStyle.Top means that the width of the item will always be the width of the container and the location will always be 0,0.

Setting DockStyle.Top and DockStyle.Left would essentially give you DockStyle.Fill. I.e. the same width and height as the container.

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