Set TabPage Header Color

Question

Greetings,

I have a tab control and I want to have 1 of the tabs have it\'s text color changed on a event. I\'ve found answers like C# - TabPage Color event and C# W

Answer 1

To add to Fun Mun Pieng's answer which works beautifully on Horizontal tabs, if you were to use Vertical tabs (like I was) then you would need something like this:

    private void tabControl2_DrawItem(object sender, DrawItemEventArgs e)
    {
        using (Brush br = new SolidBrush(tabColorDictionary[tabControl2.TabPages[e.Index]]))
        {
            // Color the Tab Header
            e.Graphics.FillRectangle(br, e.Bounds);
            // swap our height and width dimensions
            var rotatedRectangle = new Rectangle(0, 0, e.Bounds.Height, e.Bounds.Width);

            // Rotate
            e.Graphics.ResetTransform();
            e.Graphics.RotateTransform(-90);

            // Translate to move the rectangle to the correct position.
            e.Graphics.TranslateTransform(e.Bounds.Left, e.Bounds.Bottom, System.Drawing.Drawing2D.MatrixOrder.Append);

            // Format String
            var drawFormat = new System.Drawing.StringFormat();
            drawFormat.Alignment = StringAlignment.Center;
            drawFormat.LineAlignment = StringAlignment.Center;

            // Draw Header Text
            e.Graphics.DrawString(tabControl2.TabPages[e.Index].Text, e.Font, Brushes.Black, rotatedRectangle, drawFormat);
        }
    }

I will echo the point that ROJO1969 made, if this is in WinForms - then you must set DrawMode to OwnerDrawFixed.

Special thanks goes out to this wonderful blog entry which described how to do a rotation of text on a form.