Draw Circle in C#. For more details: https://kb.aspose.com/drawing/net/draw-circle-in-csharp/

Draw Circle in C#.cs

// Create bitmap and load into graphics object
Aspose.Drawing.Bitmap BitmapImage = new Aspose.Drawing.Bitmap(512, 512, 
Aspose.Drawing.Imaging.PixelFormat.Format32bppPArgb); 

Aspose.Drawing.Graphics GraphicsFromImage = 
Aspose.Drawing.Graphics.FromImage(BitmapImage);

// Create a pen tool and draw circle
Aspose.Drawing.Pen PenTool = new Aspose.Drawing.Pen(Aspose.Drawing.Color.Green, 3); 
GraphicsFromImage.DrawEllipse(PenTool, 20, 20, 400, 400);

// Save output PNG file 
BitmapImage.Save("Circle.png");