public static int GetIndexForFile(string file)
{
string key;
// icon files and exe files can have their custom icons
if (Path.GetExtension(file).Equals(".ico", StringComparison.OrdinalIgnoreCase) ||
Path.GetExtension(file).Equals(".exe", StringComparison.OrdinalIgnoreCase))
{
key = file;
}
else
{
key = Path.GetExtension(file).ToLower();
}
// clear the icon cache
if (icons.Images.Count > 100)
{
icons.Images.Clear();
iconIndecies.Clear();
}
if (iconIndecies.Contains(key))
{
return((int)iconIndecies[key]);
}
else
{
icons.Images.Add(DriveObject.GetImageForFile(file));
int index = icons.Images.Count - 1;
iconIndecies.Add(key, index);
return(index);
}
}
public ShellTree()
{
Sorted = true;
TreeNode rootNode = Nodes.Add("Desktop");
rootNode.ImageIndex = 6;
rootNode.SelectedImageIndex = 6;
rootNode.Tag = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory);
TreeNode myFilesNode = rootNode.Nodes.Add("My Documents");
myFilesNode.ImageIndex = 7;
myFilesNode.SelectedImageIndex = 7;
try {
myFilesNode.Tag = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
} catch (Exception) {
myFilesNode.Tag = "C:\\";
}
myFilesNode.Nodes.Add("");
TreeNode computerNode = rootNode.Nodes.Add("My Computer");
computerNode.ImageIndex = 8;
computerNode.SelectedImageIndex = 8;
try {
computerNode.Tag = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
} catch (Exception) {
computerNode.Tag = "C:\\";
}
foreach (string driveName in Environment.GetLogicalDrives())
{
DriveObject drive = new DriveObject(driveName);
TreeNode node = new TreeNode(drive.ToString());
node.Nodes.Add(new TreeNode(""));
node.Tag = driveName.Substring(0, driveName.Length - 1);
computerNode.Nodes.Add(node);
switch (DriveObject.GetDriveType(driveName))
{
case DriveType.Removeable:
node.ImageIndex = node.SelectedImageIndex = 2;
break;
case DriveType.Fixed:
node.ImageIndex = node.SelectedImageIndex = 3;
break;
case DriveType.Cdrom:
node.ImageIndex = node.SelectedImageIndex = 4;
break;
case DriveType.Remote:
node.ImageIndex = node.SelectedImageIndex = 5;
break;
default:
node.ImageIndex = node.SelectedImageIndex = 3;
break;
}
}
foreach (string directory in Directory.GetDirectories(Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory)))
{
TreeNode node = rootNode.Nodes.Add(Path.GetFileName(directory));
node.Tag = directory;
node.ImageIndex = node.SelectedImageIndex = 0;
node.Nodes.Add(new TreeNode(""));
}
rootNode.Expand();
computerNode.Expand();
InitializeComponent();
}