/// <summary> /// 文件下载 /// </summary> /// <param name="downUrl">下载地址</param> /// <param name="downFile">要下载的文件</param> /// <returns></returns> public static bool DownFile(string downUrl, string downFile) { long fileLength = 0; WebRequest webReq = WebRequest.Create(downUrl); WebResponse webRes = webReq.GetResponse(); fileLength = webRes.ContentLength; try { Stream srm = webRes.GetResponseStream(); StreamReader srmReader = new StreamReader(srm); byte[] bufferbyte = new byte[fileLength]; int allByte = (int)bufferbyte.Length; int startByte = 0; while (fileLength > 0) { int downByte = srm.Read(bufferbyte, startByte, allByte); if (downByte == 0) { break; } startByte += downByte; fileLength -= downByte; } SysFile2.CreateDirtory(downFile); FileStream fs = new FileStream(downFile, FileMode.Create, FileAccess.Write); fs.Write(bufferbyte, 0, startByte); srm.Close(); srmReader.Close(); fs.Close(); return(true); } catch { return(false); } }