Question

How can I use System.Drawing to do this?

I just want to be able to specify dimensions and background color (in hex) and eventually end up with an Image.

I’ve looked at similar questions (like this one) but they’re more for WinForms – I need it for ASP.Net.

Answer 1

You can do something like this:

<%@ Page Language="C#" ContentType="image/jpeg" %>
<%@ Import Namespace="System.Drawing" %>
<%@ Import Namespace="System.Drawing.Text" %>
<%@ Import Namespace="System.Drawing.Imaging" %>
<%@ Import Namespace="System.Drawing.Drawing2D" %>

<%

Response.Clear();
int height = 100;
int width = 200;
Random r = new Random();
int x = r.Next(75);

Bitmap bmp = new Bitmap(width, height, PixelFormat.Format24bppRgb);
Graphics g = Graphics.FromImage(bmp);

g.TextRenderingHint = TextRenderingHint.AntiAlias;
g.Clear(Color.Orange);
g.DrawRectangle(Pens.White, 1, 1, width-3, height-3);
g.DrawRectangle(Pens.Gray, 2, 2, width-3, height-3);
g.DrawRectangle(Pens.Black, 0, 0, width, height);
g.DrawString("The Code Project", new Font("Arial", 12, FontStyle.Italic), 
SystemBrushes.WindowText, new PointF(x,50) );

bmp.Save(Response.OutputStream, ImageFormat.Jpeg);
g.Dispose();
bmp.Dispose();
Response.End();

%>

Here’s a link to the full article: http://www.codeproject.com/KB/aspnet/aspnet_web_graphics.aspx