How do you compare last modified time between two versions of a file?

Question

ICSM Computer · Answer

To compare the last modified time between two versions of a file in C#, you can use
File.GetLastWriteTime() or FileInfo.LastWriteTime.
Example Using File.GetLastWriteTime
using System;
using System.IO;
class FileComparer
{
    public static void CompareFileModificationTimes(string filePath1, string filePath2)
    {
        DateTime file1Time = File.GetLastWriteTime(filePath1);
        DateTime file2Time = File.GetLastWriteTime(filePath2);
        Console.WriteLine($"File 1: {file1Time}");
        Console.WriteLine($"File 2: {file2Time}");
        if (file1Time andgt; file2Time)
            Console.WriteLine("File 1 is newer.");
        else if (file1Time andlt; file2Time)
            Console.WriteLine("File 2 is newer.");
        else
            Console.WriteLine("Both files were modified at the same time.");
    }
}
Usage
FileComparer.CompareFileModificationTimes("version1.txt", "version2.txt");
Tips
Use FileInfo.LastWriteTimeUtc for comparing across time zones.You can compare CreationTime instead if needed.Always check that both files exist before comparing to avoid exceptions.
Read More
How do you prevent a file from being modified while reading it?How can you determine the creation time or last modified time of a file?How to create a Cookie in C#, which is both side modifiable.

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How do you compare last modified time between two versions of a file?

ICSM Computer

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1 Answers

Example Using `File.GetLastWriteTime`

Usage

Tips

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