List Last Accessed Files

Retrieves files which are last accessed.

The following code snippet will return the list of files that are last accessed in the given directory(i.e D:\Shekar\MyFolder). If the given directory does not exists it will return null.

The method will return the IOrderedEnumerable. Here IOrderedEnumerable is an interface which represents a sorted sequence from Linq. This provides other extension methods which can be operated on the sorted list.

For more information on the interface

IOrderedEnumerable<KeyValuePair<string, DateTime>> list = GetFiles(@"D:\Shekar\MyFolder");

private static IOrderedEnumerable<KeyValuePair<string, DateTime>> GetFiles(string directoryPath)
if (Directory.Exists(directoryPath))
string[] files = Directory.GetFiles(directoryPath);
Dictionary<string, DateTime> filePathsWithLastAcces = new Dictionary<string, DateTime>();
foreach (string filePath in files)
filePathsWithLastAcces.Add(filePath, Directory.GetLastWriteTime(filePath));
IOrderedEnumerable<KeyValuePair<string, DateTime>> enumsList = filePathsWithLastAcces.OrderByDescending(fp => fp.Value);
return enumsList;
return null;


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