没什么技术含量，，主要留给自己查找方便；

如题，知道图片的完整网络路径的情况下，在浏览器中下载图片的实现：

下面这个方法实现的是把图片读取为byte数组：

private byte[] GetImageContent(string url) { HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); request.AllowAutoRedirect = true; WebProxy proxy = new WebProxy(); proxy.BypassProxyOnLocal = true; proxy.UseDefaultCredentials = true; request.Proxy = proxy; WebResponse response = request.GetResponse(); using (Stream stream = response.GetResponseStream()) { using (MemoryStream ms = new MemoryStream()) { Byte[] buffer = new Byte[1024]; int current = 0; while ((current = stream.Read(buffer, 0, buffer.Length)) != 0) { ms.Write(buffer, 0, current); } return ms.ToArray(); } } }

下面这方法是下载图片：

第一个参数：图片下载显示的文件名

第二个参数：通过上一个方法得到的byte数组，传进这里就可以了

private void WriteResponse(string picName, byte[] content) { Response.Clear(); Response.ClearHeaders(); Response.Buffer = false; Response.ContentType = "application/octet-stream"; Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(picName, Encoding.Default)); Response.AppendHeader("Content-Length", content.Length.ToString()); Response.BinaryWrite(content); Response.Flush(); Response.End(); }

.net 已知图片的网络路径，通过浏览器下载图片