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The namespace of system.Drawing provides the access to basic GDI+ graphic function. In the namespace of System.Drawing.Drawing2D, System.Drawing.Imaging and System.Drawing.Text , .Net provides more advanced functionalities. <pre><code>using System.Drawing; using System.Drawing.Imaging; using System.Drawing.Text; </code></pre> Create canvas and fill the background <pre><code>Bitmap objBitmap; Graphics objGraphics; objBitmap = new Bitmap(400, 440); objGraphics = Graphics.FromImage(objBitmap); objGraphics.Clear(Color.White); </code></pre> Draw the pie and fill <pre><code>Pen p=new Pen(Color.Yellow,0); Rectangle rect=new Rectangle(10,10,280,280); objGraphics.DrawEllipse(p,rect); Brush b1=new SolidBrush(Color.Red); Brush b2=new SolidBrush(Color.Green); Brush b3=new SolidBrush(Color.Blue); objGraphics.FillPie(b1, rect, 0f, 60f); objGraphics.FillPie(b2, rect, 60f, 150f); objGraphics.FillPie(b3, rect, 210f, 150f); </code></pre> Draw font <pre><code>FontFamily fontfml = new FontFamily(GenericFontFamilies.Serif); Font font = new Font(fontfml, 16); SolidBrush brush = new SolidBrush(Color.Blue); objGraphics.DrawString("Drawing Graphics", font, brush, 70, 300); </code></pre> Export and save to picture <pre><code>objBitmap.Save(Response.OutputStream, ImageFormat.Gif); objBitmap.Save(Server.MapPath("x.jpg"), ImageFormat.Jpeg); </code></pre> End drawing <pre><code>objBitmap.Dispose(); objGraphics.Dispose(); </code></pre> Here is the refrence: <a href="http://programmingdiscussions.blogspot.com/2010/07/aspnet-graphics-tutorial.html" rel="nofollow">http://programmingdiscussions.blogspot.com/2010/07/aspnet-graphics-tutorial.html</a> <a href="http://www.developerfusion.com/article/2569/creating-images-on-the-fly-with-aspnet/" rel="nofollow">http://www.developerfusion.com/article/2569/creating-images-on-the-fly-with-aspnet/</a> <a href="http://www.c-sharpcorner.com/UploadFile/steve_hall/drawinglinechart02072007053420AM/drawinglinechart.aspx" rel="nofollow">http://www.c-sharpcorner.com/UploadFile/steve_hall/drawinglinechart02072007053420AM/drawinglinechart.aspx</a> Hope this helps.
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