public IEnumerable <string> GetFiles(string path, SearchOption searchOption, string[] extensions = null)
{
if (string.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
if (!Directory.Exists(path))
{
throw new ArgumentException("Folder does not exist.", nameof(path));
}
DirectoryRead?.Invoke(this, new DirectoryReadEventArgs(path));
if (extensions == null)
{
ExtensionsRead?.Invoke(this, new ExtensionsReadEventArgs("*.*"));
foreach (var file in Directory.EnumerateFiles(path, "*.*", searchOption))
{
yield return(file);
}
}
else
{
foreach (var extension in extensions)
{
ExtensionsRead?.Invoke(this, new ExtensionsReadEventArgs(extension));
foreach (var file in Directory.EnumerateFiles(path, "*.*", searchOption)
.Where(s => s.ToLower().EndsWith(extension.ToLower())))
{
yield return(file);
}
}
}
}
private IEnumerable <string> GetContents(
PortableDevice mtpDevice,
PortableDeviceFolder mtpFolder,
string path,
SearchOption searchOption,
string[] extensions = null)
{
if (extensions == null)
{
extensions = new[] { "*.*" }
}
;
foreach (var extension in extensions)
{
ExtensionsRead?.Invoke(this, new ExtensionsReadEventArgs(extension));
foreach (var file in EnumerateFiles(mtpDevice, mtpFolder, path, searchOption)
.Where(s => s.ToLower().EndsWith(extension.ToLower()) || extension == "*.*"))
{
yield return(file);
}
}
}
