System.Drawing.Graphics

lastmod 2026-11-10created 2017-01-172 edits

System.Drawing.Graphics is a class in .NET that represents a GDI+-based 2D drawing surface. It provides methods such as DrawLine, DrawImage, and DrawString for drawing lines, shapes, images, and strings, and you draw by obtaining a Graphics object from a form or bitmap. A typical use is to compute the size a string will occupy with MeasureString before drawing it, then position it accordingly.

MeasureString

• stackoverflow - How can i change in Graphics DrawString the text font size?

using (Font bigFont = new Font(SystemFonts.DefaultFont.FontFamily, 14, FontStyle.Regular)) {
  SizeF size = g.MeasureString(texttodraw, bigFont, 14);
  g.DrawString(texttodraw, bigFont, Brushes.Red, pictureBox1.Location.X + (pictureBox1.Width / 2) - (size.Width / 2), pictureBox1.Location.Y - 30);
}

Favorite site

• [https://msdn.microsoft.com/en-us/library/system.drawing.graphics(v=vs.110.aspx MSDN - Graphics Class]
• stackoverflow - c# write text on bitmap