List files in a directory in C#

To list all files in a directory in C#, you can use the Directory.GetFiles() method. Here is an example:

string directoryPath = @"C:\ExampleDirectory";
string[] files = Directory.GetFiles(directoryPath);

foreach (string file in files)
{
    Console.WriteLine(file);
}

To ignore inaccessible files in a folder, you can add a try-catch block and catch the UnauthorizedAccessException exception that is thrown when a file cannot be accessed due to permissions or other issues:

string directoryPath = @"C:\ExampleDirectory";
string[] files = null;

try
{
    files = Directory.GetFiles(directoryPath);
}
catch (UnauthorizedAccessException ex)
{
    Console.WriteLine(ex.Message);
}

if (files != null)
{
    foreach (string file in files)
    {
        Console.WriteLine(file);
    }
}

In this example, if the Directory.GetFiles() method throws an UnauthorizedAccessException, the error message is printed to the console, but the code continues executing without listing the inaccessible files.

"C# list files in a directory example": An overview of listing files in a directory in C#.

string directoryPath = "C:\\Path\\to\\directory";

// Get all files in the directory
string[] files = Directory.GetFiles(directoryPath);

"Listing files using Directory.GetFiles in C#": Using Directory.GetFiles to list files in C#.

string directoryPath = "C:\\Path\\to\\directory";

// Get all files in the directory
string[] files = Directory.GetFiles(directoryPath);

"Getting file names from a directory in C#": Retrieving file names from a directory in C#.

string directoryPath = "C:\\Path\\to\\directory";

// Get file names only
string[] fileNames = Directory.GetFiles(directoryPath).Select(Path.GetFileName).ToArray();

"Iterating through files in a directory with C#": Iterating through files in a directory using C#.

string directoryPath = "C:\\Path\\to\\directory";

// Iterate through files
foreach (string filePath in Directory.GetFiles(directoryPath))
{
    Console.WriteLine(filePath);
}

"Filtering files based on extensions in C#": Filtering files based on extensions in C#.

string directoryPath = "C:\\Path\\to\\directory";
string targetExtension = ".txt";

// Filter files by extension
string[] filteredFiles = Directory.GetFiles(directoryPath, $"*{targetExtension}");

"Retrieving file information from a directory in C#": Retrieving detailed file information from a directory in C#.

string directoryPath = "C:\\Path\\to\\directory";

// Get file information
FileInfo[] fileInfoArray = new DirectoryInfo(directoryPath).GetFiles();

"Sorting files in a directory by date in C#": Sorting files in a directory by date in C#.

string directoryPath = "C:\\Path\\to\\directory";

// Sort files by creation date
var sortedFiles = new DirectoryInfo(directoryPath).GetFiles().OrderBy(f => f.CreationTime);

"Listing only specific types of files in C#": Listing only specific types of files in C#.

string directoryPath = "C:\\Path\\to\\directory";
string[] allowedExtensions = { ".jpg", ".png", ".gif" };

// Filter files by allowed extensions
var allowedFiles = Directory.GetFiles(directoryPath)
    .Where(file => allowedExtensions.Contains(Path.GetExtension(file)));

"Recursively listing files in subdirectories in C#": Recursively listing files in subdirectories in C#.

string directoryPath = "C:\\Path\\to\\directory";

// Recursively get all files
string[] allFiles = Directory.GetFiles(directoryPath, "*", SearchOption.AllDirectories);

"Using LINQ to query files in a directory in C#": Utilizing LINQ to query files in a directory in C#.

string directoryPath = "C:\\Path\\to\\directory";

// LINQ query for files
var query = from file in new DirectoryInfo(directoryPath).GetFiles()
            where file.Length > 1000
            orderby file.Name
            select file;

"Displaying file details with FileInfo in C#": Displaying file details using FileInfo in C#.

string filePath = "C:\\Path\\to\\file.txt";

// Display file details
FileInfo fileInfo = new FileInfo(filePath);
Console.WriteLine($"File Name: {fileInfo.Name}, Size: {fileInfo.Length} bytes");

"Handling exceptions while listing files in C#": Handling exceptions that may occur while listing files in C#.

string directoryPath = "C:\\Path\\to\\directory";

try
{
    // Attempt to get files
    string[] files = Directory.GetFiles(directoryPath);
}
catch (Exception ex)
{
    Console.WriteLine($"Error: {ex.Message}");
}

"Listing files based on criteria in C#": Listing files based on specific criteria in C#.

string directoryPath = "C:\\Path\\to\\directory";

// List files based on criteria
var filteredFiles = Directory.GetFiles(directoryPath)
    .Where(file => new FileInfo(file).Length > 1024); // Example: files larger than 1 KB

"Getting file count in a directory in C#": Getting the count of files in a directory in C#.

string directoryPath = "C:\\Path\\to\\directory";

// Get file count
int fileCount = Directory.GetFiles(directoryPath).Length;