public System.Collections.IEnumerable GetChildren(TreePath treePath)
{
if (string.IsNullOrEmpty(this.basePath) && treePath.IsEmpty())
{
foreach (string str in Environment.GetLogicalDrives())
{
LogicalDriveItem item = new LogicalDriveItem(str);
yield return(item);
}
}
else
{
List <BaseItem> items = new List <BaseItem>();
BaseItem parent = treePath.LastNode as BaseItem;
string path = parent != null ? parent.ItemPath : this.basePath;
if (!string.IsNullOrEmpty(path) && Directory.Exists(path))
{
try
{
IEnumerable <string> dirQuery = Directory.GetDirectories(path);
IEnumerable <string> fileQuery = Directory.GetFiles(path);
if (this.filter != null)
{
dirQuery = dirQuery.Where(s => this.filter(s));
fileQuery = fileQuery.Where(s => this.filter(s));
}
foreach (string str in dirQuery)
{
items.Add(new FolderItem(str, parent));
}
foreach (string str in fileQuery)
{
items.Add(new FileItem(str, parent));
}
}
catch (UnauthorizedAccessException) {}
this.itemsToRead.AddRange(items);
if (!this.itemLoader.IsBusy)
{
this.itemLoader.RunWorkerAsync();
}
foreach (BaseItem item in items)
{
yield return(item);
}
}
else
{
yield break;
}
}
}
public System.Collections.IEnumerable GetChildren(TreePath treePath)
{
if (string.IsNullOrEmpty(this.basePath) && treePath.IsEmpty())
{
foreach (string str in Environment.GetLogicalDrives())
{
LogicalDriveItem item = new LogicalDriveItem(str);
yield return item;
}
}
else
{
List<BaseItem> items = new List<BaseItem>();
BaseItem parent = treePath.LastNode as BaseItem;
string path = parent != null ? parent.ItemPath : this.basePath;
if (!string.IsNullOrEmpty(path) && Directory.Exists(path))
{
try
{
IEnumerable<string> dirQuery = Directory.GetDirectories(path);
IEnumerable<string> fileQuery = Directory.GetFiles(path);
if (this.filter != null)
{
dirQuery = dirQuery.Where(s => this.filter(s));
fileQuery = fileQuery.Where(s => this.filter(s));
}
foreach (string str in dirQuery) items.Add(new FolderItem(str, parent));
foreach (string str in fileQuery) items.Add(new FileItem(str, parent));
}
catch (UnauthorizedAccessException) {}
this.itemsToRead.AddRange(items);
if (!this.itemLoader.IsBusy) this.itemLoader.RunWorkerAsync();
foreach (BaseItem item in items)
yield return item;
}
else
yield break;
}
}