Change the Tab size of tabControl

Use it...

private void FrmSqlMain_Load(object sender, EventArgs e)
 {
     myTabControl.SizeMode = TabSizeMode.Normal;
     myTabControl.DrawMode = TabDrawMode.OwnerDrawFixed;
 }

Unfortunately, there isn't built-in property to control the width of the TabPages' tab header of the TabControl individually (Edit: apparently, there is TabControl.ItemSize to control it collectively. See TaW's answer to fix the width of all tab pages under a tab control).

But a little trick you could do is to give additional spaces in the left or in the right of the TabPage.Text to give you enough space for your icon.

Without space:

With 7 spaces:

It should be enough to put your icon

Try increasing "myTabControl.Padding.X". It works for me!

Actually you can set the size of the tabs, but not individually.

The combination of SizeMode = Fixed and some suitable value for the TabControl.Itemsize will create any size, but always the same..:

So for individually enlarging each tab to make the icon fit you indeed need to use Ian's 'spacey' method..