private void MyTreeViewItem_Expanded(object sender, RoutedEventArgs e)
{
if (hasExpanded)
{
return;
}
MyItemManager.CreatSubTVItemFromTVItem(this);
hasExpanded = true;
}
/// <summary>
/// 4线程查找并把结果放入控件的异步方法
/// </summary>
/// <param name="lb">listbox控件</param>
/// <param name="path">查找的起始路径</param>
/// <param name="ct">用于安全结束线程的对象</param>
/// <param name="pattern">查找的文件或目录名</param>
/// <returns></returns>
public static async Task AddLBItemByThreads(ListBox lb, string path, CancellationToken ct, string pattern)
{
Task t = new Task(() =>
{
var dirInfo = new DirectoryInfo(path);
var _files = dirInfo.GetFiles(pattern);
var _dirs = dirInfo.GetDirectories();
System.Text.RegularExpressions.Regex reg = new System.Text.RegularExpressions.Regex(pattern.Replace("*", ".*"));
//Thread.Sleep(2000);
MyItemManager.UpdateByMainThread(lb, _files);
Queue <DirectoryInfo> quedir = new Queue <DirectoryInfo>();
try {
foreach (var i in _dirs)
{
quedir.Enqueue(i);
if (reg.IsMatch(i.Name))
{
MyItemManager.UpdateByMainThread(lb, i);
}
ct.ThrowIfCancellationRequested();
}
int j = 2;
while (j > 0 && quedir.Count != 0)
{
var p = quedir.Dequeue();
Task tt = AddLBItemAnsyc(lb, p.FullName, ct, pattern);
}
while (quedir.Count != 0)
{
//Thread.Sleep(2000);
ct.ThrowIfCancellationRequested();
var dir = quedir.Dequeue();
var files = dir.GetFiles(pattern);
foreach (var ii in _dirs)
{
if (reg.IsMatch(ii.Name))
{
MyItemManager.UpdateByMainThread(lb, ii);
}
ct.ThrowIfCancellationRequested();
}
MyItemManager.UpdateByMainThread(lb, files);
}
}
catch (Exception) {
}
});
t.Start();
await t;
}
/// <summary>
/// 查找并把结果放入控件的普通方法
/// </summary>
/// <param name="lb"></param>
/// <param name="path"></param>
/// <param name="ct"></param>
/// <param name="pattern"></param>
public static void AddLBItem(ListBox lb, string path, CancellationToken ct, string pattern)
{
var dirInfo = new DirectoryInfo(path);
var _files = dirInfo.GetFiles(pattern);
var _dirs = dirInfo.GetDirectories();
System.Text.RegularExpressions.Regex reg = new System.Text.RegularExpressions.Regex(pattern.Replace("*", ".*"));
Queue <DirectoryInfo> quedir = new Queue <DirectoryInfo>();
foreach (var i in _dirs)
{
quedir.Enqueue(i);
if (reg.IsMatch(i.Name))
{
MyItemManager.UpdateByMainThread(lb, i);
}
ct.ThrowIfCancellationRequested();
}
//Thread.Sleep(2000);
MyItemManager.UpdateByMainThread(lb, _files);
while (quedir.Count != 0)
{
//Thread.Sleep(2000);
ct.ThrowIfCancellationRequested();
var dir = quedir.Dequeue();
var dirs = dir.GetDirectories();
var files = dir.GetFiles(pattern);
foreach (var i in dirs)
{
if (reg.IsMatch(i.Name))
{
MyItemManager.UpdateByMainThread(lb, i);
}
ct.ThrowIfCancellationRequested();
}
MyItemManager.UpdateByMainThread(lb, files);
}
}
