Console App Task 14: How to filter files in a single step using Directory.EnumerateFiles() with LINQ in C#

Console App Task 14: How to filter files in a single step using Directory.EnumerateFiles() with LINQ in C# ?

Yes! You can filter files in a single step using Directory.EnumerateFiles() with LINQ. This avoids unnecessary file retrievals and makes the code more efficient.

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✅ Get Filtered Files in One Step

using System;
using System.IO;
using System.Linq;

class Program
{
    static void Main()
    {
        string destinationPath = @"C:\YourFolderPath";  // Change this to your folder path
        DateTime someMonthAgo = DateTime.Now.AddMonths(-3); // 3 months ago

        // Get filtered files in one step
        var filteredFiles = Directory.EnumerateFiles(destinationPath)
            .Where(file => File.GetLastWriteTime(file) <= someMonthAgo &&  // Older than 3 months
                          (file.Contains("TS") || file.Contains("ECU")))  // Contains "TS" or "ECU"
            .ToList();

        // Print the filtered files
        Console.WriteLine("Filtered Files:");
        foreach (var file in filteredFiles)
        {
            Console.WriteLine(file);
        }
    }
}

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📌 Why is This Better?

✅ Single Step Filtering → No need to store all files first, saves memory.
✅ Efficient → Uses Directory.EnumerateFiles(), which reads files one at a time instead of loading everything at once.
✅ Flexible → Filters both date & name together.

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