Draw Polygon in C# | Create Polygon Drawing in C# .NET

Draw-Polygon-Filled.cs

// Create Bitmap class object
Bitmap bitmap = new Bitmap(1000, 800, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);

// Initialize a Graphics class instance
Graphics graphics = Graphics.FromImage(bitmap);

// Create a brush while specifying its color
Brush brush = new SolidBrush(Color.FromKnownColor(KnownColor.CornflowerBlue));

// Create the filled polygon
graphics.FillPolygon(brush, new Point[] { new Point(25, 350), new Point(450, 350), new Point(475, 150), new Point(225, 50), new Point(10, 150) });

// Export the output image
bitmap.Save("Filled-Polygon.png");

Draw-Polygon.cs

// Create Bitmap class object
Bitmap bitmap = new Bitmap(1000, 800, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);

// Initialize a Graphics class instance
Graphics graphics = Graphics.FromImage(bitmap);

// Create a Pen class object
Pen pen = new Pen(Color.FromKnownColor(KnownColor.Blue), 2);

// Draw the polygon shape
graphics.DrawPolygon(pen, new Point[] { new Point(100, 100), new Point(500, 700), new Point(900, 300), new Point(650, 100) });

// Export the output image
bitmap.Save("Draw-Polygon.png");