How to delete files based on file creation date

Question

_{Monday, April 25, 2016 9:32 AM}

suppose every day when my apps run then it create files in specific folder with name pattern like log_ddMMyyyyhhmmss.xml

if my program run several time in a day then as many as log file will be created. so how could i delete files which has been created 7 days ago. i want to mean how could i keep only last seven days files and delete rest of the files which has been created 7 days ago. please guide me with sample code. thanks

All replies (5)

_{Monday, April 25, 2016 9:45 AM ✅Answered}

var files = new DirectoryInfo(@"your-folder-path").GetFiles("*.xml");
foreach (var file in files)
{
    if (DateTime.UtcNow - file.CreationTimeUtc > TimeSpan.FromDays(7))
    {
        File.Delete(file.FullName);
    }
}

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_{Monday, April 25, 2016 11:13 AM ✅Answered}

Sudip,

One correction. Thanks Mike!

string[] files = Directory.GetFiles("YOUR_DIRECTORY");

foreach (string file in files)
        {
            FileInfo fInfo = new FileInfo(file);
            if (fInfo.CreationTime < DateTime.Now.AddDays(-7))
                fInfo.Delete();
        }

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_{Monday, April 25, 2016 10:42 AM}

Sudip,

You can follow below line of code to delete all files which are longer than week.

 string[] files = Directory.GetFiles("YOUR_DIRECTORY");

        foreach (string file in files)
        {
            FileInfo fInfo = new FileInfo(file);
            if (fInfo.LastAccessTime < DateTime.Now.AddDays(-7))
                fInfo.Delete();
        }

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_{Monday, April 25, 2016 10:46 AM}

fInfo.LastAccessTime

That doesn't return the creation date.

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_{Monday, April 25, 2016 11:07 AM}

Correct Mike! It gives last access date. I assumed, no one manually update the file. In this code your code is perfect.