//save binary bytes into file
public bool saveBytesToFile(string fileToSave, ref Byte[] bytes, int dataLen, out string errStr)
{
bool saveOk = false;
errStr = "未知错误！";
try
{
int bufStartPos = 0;
int bytesToWrite = dataLen;
FileStream fs;
fs = File.Create(fileToSave, bytesToWrite);
fs.Write(bytes, bufStartPos, bytesToWrite);
fs.Close();
saveOk = true;
}
catch (Exception ex)
{
errStr = ex.Message;
}
return saveOk;
}
例 10.2. saveBytesToFile 的使用范例
public bool downloadStMusicFile(string musicRealAddr, string fullnameToStore, out string errStr, Action<int> funcUpdateProgress)
{
bool downloadOk = false;
errStr = "未知错误！";
if (musicRealAddr == null ||
musicRealAddr == "" ||
fullnameToStore == null ||
fullnameToStore == "")
{
errStr = "Songtaste歌曲真实的地址无效！";
return downloadOk;
}
Dictionary<string, string> headerDict = new Dictionary<string, string>();
//headerDict.Add("Referer", "http://songtaste.com/music/");
headerDict.Add("Referer", "http://songtaste.com/");
//const int maxMusicFileLen = 100 * 1024 * 1024; // 100M
const int maxMusicFileLen = 300 * 1024 * 1024; // 300M
Byte[] binDataBuf = new Byte[maxMusicFileLen];
int respDataLen = crl.getUrlRespStreamBytes(ref binDataBuf, musicRealAddr, headerDict, null, 0, funcUpdateProgress);
if (respDataLen < 0)
{
errStr = "无法读取歌曲数据！";
return downloadOk;
}
if (crl.saveBytesToFile(fullnameToStore, ref binDataBuf, respDataLen, out errStr))
{
downloadOk = true;
}
 |  |  |
| 10.1. 获得当前保存路径:getSaveFolder |  | 10.3. （从网络上）下载文件（到本地）:downloadFile |
