net 根據連接地址下載文件，圖片
string path = System.Windows.Forms.Application.StartupPath+"\\1.jpg";//下載到的地址+文件名
// 設置參數
HttpWebRequest request = WebRequest.Create("http://172.31.2.7:3480/resource/root/服務券/生日禮/10月/twg160922_392x120.jpg") as HttpWebRequest;
//發送請求並獲取相應回應數據
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
//直到request.GetResponse()程序才開始向目標網頁發送Post請求
Stream responseStream = response.GetResponseStream();
//創建本地文件寫入流
Stream stream = new FileStream(path, FileMode.Create);
byte[] bArr = new byte[1024];
int size = responseStream.Read(bArr, 0, (int)bArr.Length);
while (size > 0)
{
stream.Write(bArr, 0, size);
size = responseStream.Read(bArr, 0, (int)bArr.Length);
}
stream.Close();
responseStream.Close();
net 根據連接地址下載文件，圖片