public DirectoryDetails(string path, bool autoScanning = false)
{
Path = path;
ProgressVal = 0;
if (autoScanning)
{
var scanningMsg = new ScanningMsg();
var dd = AutoScanning(path, scanningMsg);
Size = dd.Size;
Subdirectories = dd.Subdirectories;
Subfiles = dd.Subfiles;
}
else
{
Path = path;
Size = 0;
Subdirectories = new List <DirectoryDetails>();
Subfiles = new List <string>();
}
}
private static DirectoryDetails AutoScanning(string path, ScanningMsg msg, double progressVal)
{
var dd = new DirectoryDetails(path);
var taskPool = new List <Task>();
msg.CurrentScanningPath = path;
dd.ProgressVal = progressVal;
try
{
var subdirectories = Directory.GetDirectories(path);
var subfiles = Directory.GetFiles(path);
double eachProgressVal = subdirectories.Length != 0 ? dd.ProgressVal / subdirectories.Length : 0;
dd.ProgressVal = subdirectories.Length != 0 ? 0 : dd.ProgressVal;
foreach (var dir in subdirectories)
{
if (threadsCount < processorCount * 5)
{
taskPool.Add(Task.Run(() =>
{
var ddChild = AutoScanning(dir, msg, eachProgressVal);
dd.Subdirectories.Add(ddChild);
dd.Size += ddChild.Size;
}));
threadsCount++;
}
else
{
var ddChild = AutoScanning(dir, msg, eachProgressVal);
dd.Subdirectories.Add(ddChild);
dd.Size += ddChild.Size;
}
}
foreach (var file in subfiles)
{
dd.Subfiles.Add(file);
dd.Size += new FileInfo(file).Length;
}
// 线程必须全部完成才能结束
Task.WaitAll(taskPool.ToArray());
// 汇报进度
msg.progressVal += dd.ProgressVal / 10000;
}
catch (UnauthorizedAccessException)
{
msg.progressVal += dd.ProgressVal / 10000;
msg.WarningMsg += ("Unauthoried: " + path + "\r\n");
}
catch (PathTooLongException)
{
msg.progressVal += dd.ProgressVal / 10000;
msg.WarningMsg += ("PathTooLong: " + path + "\r\n");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
return(dd);
}
public static DirectoryDetails AutoScanning(string path, ScanningMsg msg)
{
return(AutoScanning(path, msg, MAX_PROGRESS_VAL));
}
