usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Drawing;usingSystem.IO;namespaceMicrosoft.Form.Base{classImageToByte{/// <summary>/// 圖片轉換成字節流/// </summary>/// <param name="img">要轉換的Image對象</param>/// <returns>轉換后返回的字節流</returns>publicstaticbyte[] ImgToByt(Image img){MemoryStream ms = newMemoryStream();byte[] imagedata = null;img.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);imagedata = ms.GetBuffer();returnimagedata;}/// <summary>/// 字節流轉換成圖片/// </summary>/// <param name="byt">要轉換的字節流</param>/// <returns>轉換得到的Image對象</returns>publicstaticImage BytToImg(byte[] byt){MemoryStream ms = newMemoryStream(byt);Image img = Image.FromStream(ms);returnimg;}///// <summary>/// 根據圖片路徑返回圖片的字節流byte[]/// </summary>/// <param name="imagePath">圖片路徑</param>/// <returns>返回的字節流</returns>privatestaticbyte[] getImageByte(stringimagePath){FileStream files = newFileStream(imagePath, FileMode.Open);byte[] imgByte = newbyte[files.Length];files.Read(imgByte, 0, imgByte.Length);files.Close();returnimgByte;}}}

//Byte[] result;System.IO.MemoryStream ms =new MemoryStream(result, 0, result.Length)  Response.ClearContent(); Response.ContentType = "image/Gif"; Response.BinaryWrite(ms.ToArray());或者添加一個處理圖片的Handler，內容如下：<%@ WebHandler Language="C#" Class="Handler" %>using System.Web;using System.IO;public class Handler : IHttpHandler { public void ProcessRequest (HttpContext context) { int CategoryID = int.Parse(context.Request.QueryString["CategoryID"]); //調用Categories.GetPicture取得圖片stream Stream stream = CategoriesPicture.GetPicture(CategoryID); if (stream !=null) { //取得圖片stream大小 int buffersize = (int)stream.Length; //建立buffer System.Byte[] buffer = new System.Byte[buffersize ] ; //調用stream.Read，從stream讀取到buffer，并返回count int count = stream.Read(buffer, 0, buffersize); //返回圖片字段buffer if (count!=0) context.Response.OutputStream.Write(buffer, 0, count); } } public bool IsReusable { get { return false; } }}