byte[] 转成图片方法
/// <summary> /// ImageData 的摘要说明 /// </summary> public class ImageData : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "image/Jpeg"; string item_code = context.Request.QueryString["ItemCode"]; IntegralDal dal = new IntegralDal(); byte[] imgbyte = dal.GetImage(item_code); Bitmap myImage = new Bitmap(GetImageByBytes(imgbyte)); MemoryStream ms = new MemoryStream(); myImage.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg); context.Response.ClearContent(); ms.WriteTo(context.Response.OutputStream); context.Response.Flush(); context.Response.End(); } }
/// <summary> /// 读取byte[]并转化为图片 /// </summary> /// <param name="bytes">byte[]</param> /// <returns>Image</returns> public static Image GetImageByBytes(byte[] bytes) { Image photo = null; using (MemoryStream ms = new MemoryStream(bytes)) { ms.Write(bytes, 0, bytes.Length); photo = Image.FromStream(ms, true); } return photo; }
实现:
this.image.Src = " ../Servers/ImageData.ashx?ItemCode=" + model.ItemCode;