I would like to know if there are some in built functions for the scenario that is described below :
The input is the path of a parent folder. Wat the function must
Using VB.NET you can do this with System.IO.Directory.GetFiles. There is a version that takes a pattern to search for and let's you search subdirectories as well.
For Each dir In Directory.GetFiles("path","*.zip",SearchOptions.AllDirectories)
Console.WriteLine( _
"{0,-25} {1,25}", dir.FullName, dir.LastWriteTime)
Next dir