Can't Access All Elements of a TreeView

Question

So, I am trying to create a file explorer in my program, but when I try to add the functionality of searching for a directory path I run into issues. I am able to successfully search and load a drive or a directory (i.e. E:\) in the first level of a drive
(i.e. E:\My Documents), but that is as far as I can go within the tree view. I believe that it may have something to do with the fact that the code (Link to Code) I
am using creates dummy items in the TreeView. One idea I had was creating a temp string that is just the first directory of the search, then increasing it if it matched and get the directories within, but that didn't work cause I was editing the list of the
foreach I used to traverse the tree. I am at my wits end with trying to figure out a work around and would appreciate all the help I can get.
Link to the full code of the project: Link to Full Project
 The function I am working starts at line 576.
Thanks,
Jesse

Answer 1

You are only adding the folders of the root directory to CompleteList. That's your main issue here.
There is a Directory.Exists method that you can use to determine whether the directory exists. Try the following code for the KeyDown event handler in FileExplorer.xaml.cs:
private void current_dir_KeyDown(object sender, KeyEventArgs e)
if (e.Key.Equals(Key.Enter))
bool found = false;
string search = current_dir.Text;
int slashes = 0;
for (int i = 0; i < search.Length; i++)
if (search[i] == '\\')
slashes++;
string drive = "";
for (int i = 0; i < 3; i++)
drive += search[i];
var current = (DirectoryInfo)null;
if (Directory.Exists(search)) {
DirectoryInfo directory = new DirectoryInfo(search);
var isHidden = (directory.Attributes & FileAttributes.Hidden) == FileAttributes.Hidden;
var isSystem = (directory.Attributes & FileAttributes.System) == FileAttributes.System;
if (!isHidden && !isSystem) {
found = true;
CompleteList.Add(this.GetItem(directory));
current = directory;
foreach (TreeViewItem item in CompleteList)
if (item.Tag is DirectoryInfo)
current = (DirectoryInfo)item.Tag;
if (search == current.FullName)
expanded_directory.Items.Clear();
ExploreDirectories2(item);
ExploreFiles2(item);
historyBack.Push(currentDisplayItem);
currentDisplayItem = item;
found = true;
return;
if (found != true)
Brush unfound = new SolidColorBrush(Colors.Red);
current_dir.BorderBrush = unfound;
else
return;
It seems to work.
Hope that helps.
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