Bitmap b = new Bitmap(600,600);//创建一个bitmap图 长宽为 500;</br>
Graphics g = Graphics.FromImage(b); //一个GDI+绘图图面,将其格式定义为bitmap;
g.Clear(Color.Red);//清除整个绘图面,并以指定色填充;
Pen p = new Pen(Color.Green, 3.0f); //创建铅笔;
g.DrawLine(p,0,0,600,600); //绘制一条连接两个点的结构线;
g.DrawEllipse(p,0,0,100,100);//绘制一个椭圆
SolidBrush sb = new SolidBrush(Color.Blue);//创建一个固体刷;
g.FillEllipse(sb, 100, 100, 200, 200);//填充所定义的椭圆内部;
g.FillRectangle(sb, 300, 300, 100, 100);//填充所定义的矩形内部;
Font f = new Font("宋体",20);//字体
g.DrawString("哼哼哈嘿!",f,sb,0,200);
Point[] arrp = new Point[5]; //point为基本点
arrp[0] = new Point(200, 200);
arrp[1] = new Point(200,400);
arrp[2] = new Point(500, 400);
arrp[3] = new Point(500,600);
arrp[4] = new Point(300, 600);
g.DrawPolygon(p,arrp);// 绘制一组由point定义的结构多边形
b.Save(Response.OutputStream,
Graphics g = Graphics.FromImage(b); //一个GDI+绘图图面,将其格式定义为bitmap;
g.Clear(Color.Red);//清除整个绘图面,并以指定色填充;
Pen p = new Pen(Color.Green, 3.0f); //创建铅笔;
g.DrawLine(p,0,0,600,600); //绘制一条连接两个点的结构线;
g.DrawEllipse(p,0,0,100,100);//绘制一个椭圆
SolidBrush sb = new SolidBrush(Color.Blue);//创建一个固体刷;
g.FillEllipse(sb, 100, 100, 200, 200);//填充所定义的椭圆内部;
g.FillRectangle(sb, 300, 300, 100, 100);//填充所定义的矩形内部;
Font f = new Font("宋体",20);//字体
g.DrawString("哼哼哈嘿!",f,sb,0,200);
Point[] arrp = new Point[5]; //point为基本点
arrp[0] = new Point(200, 200);
arrp[1] = new Point(200,400);
arrp[2] = new Point(500, 400);
arrp[3] = new Point(500,600);
arrp[4] = new Point(300, 600);
g.DrawPolygon(p,arrp);// 绘制一组由point定义的结构多边形
b.Save(Response.OutputStream,
System.Drawing.Imaging.ImageFormat.Gif);
