default.aspx.cs

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using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

using System.Drawing;
using System.Drawing.Drawing2D;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Bitmap bitmap = new Bitmap(400, 150);
        Graphics g = Graphics.FromImage(bitmap);
        g.Clear(Color.WhiteSmoke);
        SolidBrush mySolidBrush = new SolidBrush(Color.Red);
        GraphicsPath myGraphicsPath = new GraphicsPath();
        Pen myPen = new Pen(Color.Blue, 1);
        Point[] myPoints = { new Point(30, 50), new Point(50, 80), new Point(200, 100) };
        myGraphicsPath.AddArc(15, 20, 80, 50, 210, 120);
        myGraphicsPath.StartFigure();
        myGraphicsPath.AddCurve(myPoints);
        myGraphicsPath.AddString("明日科技---曲线填充", new FontFamily("华文行楷"), (int)FontStyle.Regular, 30, new PointF(20,100), new StringFormat());
        myGraphicsPath.AddPie(120, 20, 120, 100, 280, 120);
        g.FillPath(mySolidBrush, myGraphicsPath);
        g.DrawPath(myPen, myGraphicsPath);
        System.IO.MemoryStream ms = new System.IO.MemoryStream();
        bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
        Response.ClearContent();
        Response.ContentType = "image/Gif";
        Response.BinaryWrite(ms.ToArray());
    }
}