pacs.aspx.cs

用asp.net c#关于网页的图片旋转,放大,缩小.

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.Design;
using System.Drawing.Imaging;



namespace LtdLan.WebForm
{
	/// <summary>
	/// pacs 的摘要说明。
	/// </summary>
	public class pacs : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Panel PelDicom;
		protected System.Web.UI.WebControls.Panel Pelback;
		protected System.Web.UI.WebControls.Label Lblxy;
		private ImageButton Ibtn01=new ImageButton();
		protected System.Web.UI.WebControls.Button BtnRectangle;
		protected System.Web.UI.WebControls.Label LblRoi;
		protected System.Web.UI.HtmlControls.HtmlInputButton BtnEllipse;
//		private Image Ibtn02=new Image();
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
//			PelDicom01.Width=Convert.ToInt32((Convert.ToInt32)PelDicom.Width / 2);
//			PelDicom02.Width=PelDicom.Width /2;
//			PelDicom03.Width=PelDicom.Width /2;
//			PelDicom04.Width=PelDicom.Width /2;
			DicomAdd();

		}
		private void DicomAdd()
		{
			Ibtn01.ImageUrl="~/image/00000318_0057_006660.jpg";
			PelDicom.Controls.Add(Ibtn01);
			this.Ibtn01.Click +=new ImageClickEventHandler(Ibtn01_Click);
//            PelDicom.Controls.Add(Ibtn02);
		}

		#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.BtnRectangle.Click += new System.EventHandler(this.BtnRectangle_Click);
			this.BtnEllipse.ServerClick += new System.EventHandler(this.BtnEllipse_ServerClick);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		

		private void Ibtn01_Click(object sender, ImageClickEventArgs e)
		{
              Lblxy.Text="("+e.X.ToString()+","+e.Y.ToString()+")";
			switch (LblRoi.Text)
			{
				case "Rectangle":

					Bitmap bitmap=new Bitmap(@"D:\Inetpub\wwwroot\LtdLan\image\00000318_0057_006660.jpg");
					Graphics g=Graphics.FromImage(bitmap);
					g.DrawRectangle(Pens.Red,e.X-25,e.Y-25 ,50,50);
			        
					bitmap.Save(Response.OutputStream,ImageFormat.Jpeg);
			       
					g.Dispose();
					bitmap.Dispose();
					Response.End();
					break;
				case "Ellipse":

					Bitmap bitmapE=new Bitmap(@"D:\Inetpub\wwwroot\LtdLan\image\00000318_0057_006660.jpg");
					Graphics gE=Graphics.FromImage(bitmapE);
					gE.DrawEllipse(Pens.Red,e.X-25,e.Y-25 ,50,50);
			  
					bitmapE.Save(Response.OutputStream,ImageFormat.Jpeg);
			  
					gE.Dispose();
					bitmapE.Dispose();
					Response.End();
					break;
			}

		}

		private void BtnRectangle_Click(object sender, System.EventArgs e)
		{
			LblRoi.Text="Rectangle";
		}

		private void BtnEllipse_ServerClick(object sender, System.EventArgs e)
		{
			LblRoi.Text="Ellipse";
		}
	}
}