File paths and Directory operations in C Sharp (C#) - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to get the file name from the full path.

C Sharp (C#)

string filePath = @"C:\Users\Public\Documents\report.pdf";
string fileName = System.IO.Path.[1](filePath);
Console.WriteLine(fileName);

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AGetDirectoryName

BGetFileName

CCombine

DGetExtension

Attempts:

3 left

💡 Hint

Common Mistakes

Using GetDirectoryName returns the folder path, not the file name.

Using GetExtension returns only the file extension.

The GetFileName method extracts the file name from a full file path.

2fill in blank

medium

Complete the code to check if a directory exists at the given path.

C Sharp (C#)

string dirPath = @"C:\Temp\Logs";
bool exists = System.IO.Directory.[1](dirPath);
Console.WriteLine(exists);

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ACreateDirectory

BGetFiles

CExists

DDelete

Attempts:

3 left

💡 Hint

Common Mistakes

Using CreateDirectory will create the directory instead of checking.

Using GetFiles returns files inside the directory, not existence.

The Exists method checks if the directory exists and returns true or false.

3fill in blank

hard

Fix the error in the code to combine two parts of a file path correctly.

C Sharp (C#)

string folder = @"C:\Users\Public";
string file = "data.txt";
string fullPath = System.IO.Path.[1](folder, file);
Console.WriteLine(fullPath);

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AConcat

BJoin

CAppend

DCombine

Attempts:

3 left

💡 Hint

Common Mistakes

Using Join or Concat does not handle path separators correctly.

Append is not a method of Path.

The Combine method correctly joins folder and file names into a valid path.

4fill in blank

hard

Fill both blanks to create a dictionary with file names as keys and their extensions as values from a list of file paths.

C Sharp (C#)

var files = new List<string> { @"C:\Docs\file1.txt", @"D:\Music\song.mp3" };
var fileDict = files.ToDictionary(f => System.IO.Path.[1](f), f => System.IO.Path.[2](f));

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AGetFileName

BGetExtension

CGetDirectoryName

DCombine

Attempts:

3 left

💡 Hint

Common Mistakes

Using GetDirectoryName instead of GetFileName for keys.

Using Combine instead of GetExtension for values.

GetFileName extracts the file name for the dictionary key, and GetExtension extracts the file extension for the value.

5fill in blank

hard

Fill the blanks to create a dictionary with uppercase directory names as keys and the count of files inside as values.

C Sharp (C#)

var dirs = new List<string> { @"C:\Temp", @"D:\Data" };
var dirInfo = dirs.ToDictionary(d => System.IO.Path.[1](d).ToUpper(), d => System.IO.Directory.[2](d).Length);

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AGetDirectoryName

BGetFiles

CGetDirectories

DGetFileName

Attempts:

3 left

💡 Hint

Common Mistakes

Using GetDirectoryName instead of GetFileName for folder name.

Using GetDirectories instead of GetFiles for counting files.

GetFileName gets the last folder name to uppercase for the key, GetFiles returns files to count for the value.