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Directory.GetFiles on network folder

How can I get Directory.GetFiles() to check a networked folder?
I have the following line of code in my project:
string[] array2 = Directory.GetFiles(targetFolder, "*.zip");
The variable targetFolder is grabbed from my appSettings files and resembles:\\myNetwork\\Project\\TargetFolder\\
However, when I debug my project, Directory.GetFiles() changes it to:C:\\myNetwork\\Project\\TargetFolder\\ which is incorrect and fails.
How can I fix this?

Your network path should start with two slashes which are special characters, so you should use double on those as well:
\\\\myNetwork\\Project\\TargetFolder
Notice the four slashes in front (which actually represent two).

"Illegal characters in path" error using wildcards with Directory.GetFiles

I have a directory with multiple sub directories that contain .doc files. Example:
C:\Users\user\Documents\testenviroment\Released\test0.doc
C:\Users\user\Documents\testenviroment\Debug\test1.doc
C:\Users\user\Documents1\testenviroment\Debug\test2.doc
C:\Users\user\Documents1\testenviroment\Released\test20.doc
I want to get all the test*.doc files under all Debug folders. I tried:
string[] files = Directory.GetFiles(#"C:\Users\user", "*Debug\\test*.doc",
SearchOption.AllDirectories);
And it gives me an "Illegal characters in path" error.
If I try:
string[] files = Directory.GetFiles(#"C:\Users\user", "\\Debug\\test*.doc",
SearchOption.AllDirectories);
I get a different error: "Could not find a part of the path C:\Users\user\Debug".

You are including a folder within the search pattern which isn't expected. According to the docs:
searchPattern Type: System.String The search string to match against
the names of files in path. This parameter can contain a combination
of valid literal path and wildcard (* and ?) characters (see Remarks),
but doesn't support regular expressions.
With this in mind, try something like this:
String[] files = Directory.GetFiles(#"C:\Users\user", "test*.doc", SearchOption.AllDirectories)
.Where(file => file.Contains("\\Debug\\"))
.ToArray();
This will get ALL the files in your specified directory and return the ones with Debug in the path. With this in mind, try and keep the search directory narrowed down as much as possible.
Note:
My original answer included EnumerateFiles which would work like this (making sure to pass the search option (thanks #CodeCaster)):
String[] files = Directory.EnumerateFiles(#"C:\Users\user", "test*.doc", SearchOption.AllDirectories)
.Where(file => file.Contains("\\Debug\\"))
.ToArray();
I've just run a test and the second seems to be slower however it might be quicker on a larger folder. Worth keeping in mind.
Edit: Note from #pinkfloydx33
I've actually had that practically take down a system that I had
inherited. It was taking so much time trying to return the array and
killing the memory footprint as well. Problem was diverted converting
over to the enumerable counterparts
So using the second option would be safer for larger directories.

The second parameter, the search pattern, works only for filenames. So you'll need to iterate the directories you want to search, then call Directory.GetFiles(directory, "test*.doc") on each directory.
How to write that code depends on how robust you want it to be and what assumptions you want to make (e.g. "all Debug directories are always two levels into the user's directory" versus "the Debug directory can be at any level into the user's directory").
See How to recursively list all the files in a directory in C#?.
Alternatively, if you want to search all subdirectories and then discard files that don't match your preferences, see Searching for file in directories recursively:
var files = Directory.GetFiles(#"C:\Users\user", "test*.doc", SearchOption.AllDirectories)
.Where(f => f.IndexOf(#"\debug", StringComparison.OrdinalIgnoreCase) >= 0);
But note that this may be bad for performance, as it'll scan irrelevant directories.

Find files whose path ends with certain pattern

Given a file is in C drive, and its path ends with "Framework64\v4.0.30319\WPF\Fonts\GlobalMonospace.CompositeFont", what is the most efficient way to find the file?
It may be able to find, for example, "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\WPF\Fonts\GlobalMonospace.CompositeFont".
I can implement it in C# or AutoHotKey. I think Directory.EnumerateFiles and loop directive will work, but what is the most efficient way?

Use Directory.EnumerateDirectories with option SearchOption.AllDirectories to find all directories. Then pick those whose path ends in "Framework64\v4.0.30319\WPF\Fonts". Then for those, check whether the file "GlobalMonospace.CompositeFont" exists in those directories using File.Exists.

Loop, C:\*Framework64\v4.0.30319\WPF\Fonts\GlobalMonospace.CompositeFont, , 1 ; recurse into subfolders
{
MsgBox, 4, , Filename = %A_LoopFileFullPath%
continue?
IfMsgBox, No
break
}
https://autohotkey.com/docs/commands/LoopFile.htm

How to scan a directory with wildcard with a specific subdirectory

I was wondering what would be a good way to scan a directory that has characters you are not sure of.
For example, I want to scan
C:\Program\Version2.*\Files
Meaning
The folder is located in C:\Program
Version2.* could be anything like Version2.33, Version2.1, etc.
That folder has a folder named Files in it
I know that I could do something like foreach (directory) if contains("Version2."), but I was wondering if there was a better way of doing so.

Directory.EnumerateDirectories accepts search pattern. So enumerate parent that has wildcard and than enumerate the rest:
var directories =
Directory.EnumerateDirectories(#"C:\Program\", "Version2.*")
.SelectMany(parent => Directory.EnumerateDirectories(parent,"Files"))
Note: if path can contain wildcards on any level - simply normalize path and split by "\", than collect folders level by level.

Try this
var pattern = new Regex(#"C:\\Program\\Version 2(.*)\\Files(.*)");
var directories = Directory.EnumerateDirectories(#"C:\Program", "*",
SearchOption.AllDirectories)
.Where(d => pattern.IsMatch(d));

Create directory structure

Is there any way I can create a list with all the folders and files that are in a directory? I will specify the path and I want to list all its child folders and files, and write them in a txt file, or maybe an xml file to make it easier to read.

The Directory.GetFiles method should give you a list of all files, along with their full paths:
string[] filePaths = Directory.GetFiles(#"c:\MyDir\", "*.*", SearchOption.AllDirectories);

Directory.GetFiles and Directory.GetDirectories methods should help

This is a good link to get all files:
http://www.csharp-examples.net/get-files-from-directory/
And to get all directories: use Directories.GetFolders() instead.
Then you have to make a for loop or something to traverse them them.
Perhaps a recursive method would be a good selection. Something like
void PrintFilesAndFolders(string directory)...