c# code to extract filename from file path

To extract the filename from a file path in C#, you can use the Path class from the System.IO namespace. The Path class provides various methods to manipulate file paths. The GetFileName method is particularly useful for extracting the filename from a full file path. Here’s the C# code to do that:

using System;
using System.IO;

class Program
{
    static void Main()
    {
        string filePath = @"C:\path\to\your\file.txt";

        string fileName = ExtractFileName(filePath);

        Console.WriteLine($"Filename: {fileName}");
    }

    private static string ExtractFileName(string filePath)
    {
        try
        {
            // Get the filename from the file path.
            string fileName = Path.GetFileName(filePath);

            return fileName;
        }
        catch (Exception ex)
        {
            // Handle any exceptions that may occur during the extraction.
            Console.WriteLine($"Error: {ex.Message}");
            return null;
        }
    }
}

Replace C:\path\to\your\file.txt with the actual file path from which you want to extract the filename. The code will use the Path.GetFileName method to retrieve the filename from the file path and print it to the console.

Please note that the Path.GetFileName method does not check whether the file actually exists on the disk; it simply extracts the filename from the provided path string. If the provided path is invalid or contains invalid characters, the method may return an unexpected result. Ensure that the path you pass to the ExtractFileName method is valid and properly formatted.