Member Avatar for JerryShaw

I have the multiple level path of a filename, and I want to pull out just the immediate parent directory name of this file.

Example: Filename = "c:\temp\extra\test\myfile.txt"
How can I get "test" from this string ?

Thanks in advance
Jerry

  • 4 Contributors
  • 5 Replies
  • 508 Views
  • 4 Years Discussion Span
  • Latest Post Latest Post by Derek W

Dani AI

Generated

A few concise options and a small, robust helper that avoids manual string-splitting.

’s split approach works, and / rightly pointed out built-in APIs. For clarity and portability, prefer the Path helpers in System.IO: get the directory portion, trim any trailing separators, then take the final segment as the immediate parent name. That avoids fragile index math and does not touch the file system.

// immediate parent folder name for a file path, or null when none (root/invalid)
static string GetImmediateParentName(string filePath)
{
    if (string.IsNullOrEmpty(filePath)) return null;
    var parentPath = Path.GetDirectoryName(filePath);
    if (string.IsNullOrEmpty(parentPath)) return null;
    parentPath = parentPath.TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
    var name = Path.GetFileName(parentPath);
    return string.IsNullOrEmpty(name) ? null : name;
}

Notes and gotchas: handle null/empty and relative paths; a root parent (e.g., "C:\") yields no folder name, so decide whether to return null or the root string. Trim trailing separators first so Path.GetFileName returns the last folder name instead of an empty string. This approach is fast, safe, and culture-directory friendly (it will return "en-US" for a path like "C:...\en-US\file"). If those folder names become inputs into CultureInfo or similar, validate or catch exceptions when constructing the culture.

Recommended Answers

All 5 Replies

Member Avatar for JerryShaw

Answered it myself... learned how to use String.Split("\\")

J

Member Avatar for JerryShaw

Solved myself

What I was trying to do was dynamically build a menu item for each
langauge that was added to the application. Each language gets is own directory example: en-US, ar-QA, ...
I needed to make sure I had the resource dll in the directory, then determine its name by using the hosting directory. Pass that name to CulturInfo, and build the menu.
The Code snip below was used to populate a combobox, and a version of this used to create my menu items.

string langcode = "";
string startpath = Application.StartupPath;
foreach (string d in Directory.GetDirectories(@startpath))
{
foreach (string f in Directory.GetFiles(d, "Foo.resources.dll"))
{
 
string[] pathparts = d.Split('\\');
int ipaths = pathparts.GetUpperBound(0);
langcode = pathparts[ipaths];
CultureInfo ci = new CultureInfo(langcode);
cbDefaultLangauge.Items.Add(ci.NativeName+ " ("+ci.EnglishName+"):"+langcode);
}
}
Member Avatar for Godfear1

Thats pretty cool jerry. Thanks for posting your resuts.

Member Avatar for tbergelt

This is more portable and robust.

string fileName = "C:\someDir\someFile.txt";
string directoryName = Directory.GetParent(fileName).FullName;
commented: Don't bump old threads -1
Member Avatar for Derek W

I think, this is what you need
C# Syntax (Toggle Plain Text)

1.
string fileName = "C:\someDir\someFile.txt";
2.
string directoryName = Directory.GetParent(fileName).Name;

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.