C# Get latest directory in a path - with respect to the the name of directory

Question

i have a requirement to get the last created directory in a path with respect to its name, as an application i use created 2 directories during the runtime and i need to consider only one of them, which in order appears later. For e.g the app creates 2 folders with name: 60000c and b3c143 and i need the one with the name "b3c143". How can i acheive this? Thanks. I get the latest one using the code:

    string path = @"C:\temp";
        string mostRecentlyModified = Directory.GetDirectories(path)
           .Select(f => new FileInfo(f))
           .OrderByDescending(fi => fi.LastAccessTime)
           .First()
           .FullName;

Keep track of them when you create them, after all you create them. Querying this after the fact seems like an extra degree of freedom, and just one more thing to go wrong — TheGeneral, Feb 22 '19 at 10:41
@ChetanRanpariya i am not getting the the folder i require- thats with name b3c143 as the folder 60000c is created too with the same time and appears latest. — sina123, Feb 22 '19 at 10:43
@MichaelRandall i can access only after the whole stuff is over :( so would like to know if its possible to filter in the linq itself? — sina123, Feb 22 '19 at 10:44
https://stackoverflow.com/questions/12009615/getting-directory-list-in-creation-date-order-in-net-3-0 — Chetan Ranpariya, Feb 22 '19 at 10:48
https://stackoverflow.com/questions/298725/multiple-order-by-in-linq — Markus Deibel, Feb 22 '19 at 10:49
Try this => `.OrderByDescending(fi => fi.LastWriteTimeUtc).First().FullName;` — er-sho, Feb 22 '19 at 10:50
Is it possible to use .Contains() for filtering the directory with name? — sina123, Feb 22 '19 at 10:56

score 1 · Accepted Answer · answered Feb 22 '19 at 11:08

You can filter your desired directory with its name by passing it to .Where() func and by its last write time.

string mostRecentlyModified = Directory.GetDirectories(path)
               .Select(d => new DirectoryInfo(d))
               .Where(d => d.Name == "b3c143" && d.Exists) //.Where(d => d.Name.Trim().ToLower().Contains("b3c143".Trim().ToLower()) && d.Exists)
               .OrderByDescending(d => d.LastWriteTime)
               .First()
               .FullName;

C# Get latest directory in a path - with respect to the the name of directory

1 Answers1