Apply a Text Label with Optional background on to a Graphics Object (System.Drawing)

The following code allows you to apply to text label on to a Graphics object in C#. The background is optional but very useful if you want to set a properly aligned background color for your text label. Note: I use a lot of using statements so that anything implementing IDisposable is disposed of properly.

Usage:

Code Snippet

1. using (Bitmap b = new Bitmap("FULL PATH TO YOUR IMAGE"))
2. {
3.     using (Graphics g = Graphics.FromImage(b))
4.     {
5.         using (Font fontText = new Font(new FontFamily("Verdana"), 14, FontStyle.Bold)) // Verdana 14em Bold
6.         {
7.             using (Brush fontTextBrush = new SolidBrush(Color.White)) // White Text Color
8.             {
9.                 PointF fontTextPoint = new PointF(5, 5); // Write the text at position (5,5)
10.                 string textLabel = "Hello From TutorialGenius.com!";
11.                
12.                 // Example - Black background
13.                 this.ApplyText(g, textLabel, fontText, fontTextBrush, fontTextPoint, Color.Black);
14.                
15.                 // Example - No background
16.                 this.ApplyText(g, textLabel, fontText, fontTextBrush, fontTextPoint);
17.             }
18.         }
19.     }
20. }

End of Code Snippet

Code Snippet

1. // Applies a text layer with optional background onto a Graphics object
2. private void ApplyText(Graphics g, string text, Font font, Brush brush, PointF? point = null, Color? backgroundColor = null)
3. {
4.     if (point == null) point = new PointF(0, 0);
5.  
6.     // First - Apply optional background color
7.     if (backgroundColor.HasValue)
8.     {
9.         SizeF fontTextSize = g.MeasureString(text, font);
10.         using (Brush fillBrush = new SolidBrush(Color.Black))
11.             g.FillRectangle(fillBrush, point.Value.X, point.Value.Y, fontTextSize.Width, fontTextSize.Height);
12.     }
13.  
14.     // Second - Draw string on graphics object
15.     g.DrawString(text, font, brush, point.Value);
16. }

End of Code Snippet