Windows Forms Docking

6.1 How can I make a control occupy all the client area of a form?

private void Form1_Load(object sender, System.EventArgs e)


Bitmap newBmp = new Bitmap(100, 100);

Graphics g = Graphics.FromImage(newBmp);

g.FillRectangle(new SolidBrush(Color.Red), 0, 0, 33, 100);

g.FillRectangle(new SolidBrush(Color.White), 34, 0, 33, 100);

g.FillRectangle(new SolidBrush(Color.Blue), 68, 0, 33, 100);

pictureBox1.Image = newBmp; //pictureBox1 was dropped on the form


6.2 How can I make my control automatically grow when the parent form is sized?

Change the control's Anchor property so that it is anchored on all 4 sides.

Please note that you can only have 1 control per form anchored in this manner (all 4 sides). And other controls on the form should be anchored by their sides that are not adjacent to special control anchored on all 4 sides.

6.3 What is the difference between a form's Anchor property and a form's Dock property?

G. G. Arun Ganesh discusses these properties in Working with Anchoring and Docking Properties in C# on C# Corner.

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