flyimageweb.aspx.cs

ASP C#代码实例 适合初学人士学习使用

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;

namespace Example_12_20
{
	/// <summary>
	/// FlyImageWeb的摘要说明。
	/// </summary>
	public class FlyImageWeb : System.Web.UI.Page
	{
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(!Page.IsPostBack)
			{
				FlyImage();
			}
		}

		private void FlyImage()
		{
			Response.Clear();
			int height = 100;
			int width  = 200;
			Random random = new Random();
			int ran = random.Next(75);

			Bitmap bitmap = new Bitmap(width,height,PixelFormat.Format24bppRgb);
			Graphics graph = Graphics.FromImage(bitmap);

			graph.SmoothingMode = SmoothingMode.AntiAlias;
			graph.Clear(Color.Orange);
			graph.DrawRectangle(Pens.White,1,1,width-3,height-3);
			graph.DrawRectangle(Pens.Gray, 2, 2, width-3, height-3);
			graph.DrawRectangle(Pens.Black, 0, 0, width, height);
			graph.DrawString("创建能飞的动画",new Font("Arial",12,FontStyle.Italic),
				SystemBrushes.WindowText,new Point(ran,ran));
			bitmap.Save(Response.OutputStream,ImageFormat.Jpeg);

			graph.Dispose();
			bitmap.Dispose();
			Response.End();
		}

		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.Load += new System.EventHandler(this.Page_Load);
		}
		#endregion
	}
}