/// <summary>
/// 下载一个远程文件到指定的文件路径里
/// </summary>
/// <param name="davFile">一个WebDavFile的实体</param>
/// <param name="localFile">本地的文件地址</param>
/// <returns></returns>
private DownloadInfo DownloadFile(WebDavFile davFile, string localFile)
{
DownloadInfo info = new DownloadInfo {
FileUrl = davFile.Url
};
try
{
DownloadManager manager = new DownloadManager(GetCredentials());
string remoteFile = davFile.Url;
bool result = false;
if (File.Exists(localFile))
{
FileInfo fm = new FileInfo(localFile);
//判断本地文件是否和远程的一样
if (davFile.LastModifyDate == fm.LastWriteTime && davFile.Length == fm.Length)
{
info.Success = true;
result = true;
}
}
if (!info.Success)
{
string folder = localFile.Substring(0, localFile.LastIndexOf("\\") + 1);
if (!Directory.Exists(folder))
{
Directory.CreateDirectory(folder);
}
FileInfo file = new FileInfo(localFile);
if (file.Directory != null)
{
Directory.CreateDirectory(file.Directory.FullName);
}
//下载文件到指定的地址
result = manager.DownloadFile(davFile, localFile);
//更改文件最后修改时间
if (davFile.LastModifyDate != null)
{
File.SetLastWriteTime(localFile, davFile.LastModifyDate.Value);
}
info.Success = true;
}
}
catch (Exception ex)
{
info.Success = false;
info.Message = ex.Message;
}
return(info);
}
/// <summary>
/// 下载一个远程文件到指定的文件夹里，会根据远程文件的地址创建对应的目录结构
/// </summary>
/// <param name="file"></param>
/// <param name="defaultFoder"></param>
/// <param name="index">当前下载第几个</param>
/// <param name="total">总共文件数</param>
/// <returns></returns>
private DownloadInfo Download(WebDavFile file, string defaultFoder, int index = 1, int total = 1)
{
string folderPath = CreateFolder(file.Url, defaultFoder);
string localFile = folderPath + "\\" + file.DispalyName;
file.DownloadPath = localFile;
file.DownloadFolderPath = folderPath;
//如若DownloadCompling不为空，执行相关的事件
DownloadCompling?.Invoke(file, index, total);
//下载文件到本地
DownloadInfo result = DownloadFile(file, localFile);
// //DownloadCompleted，执行相关的事件
DownloadCompleted?.Invoke(file, index, total);
return(result);
}
