файл где? на сервере или на клиенте?

Dim di As New DirectoryInfo("c:\")
' Get a reference to each file in that directory.
Dim fiArr As FileInfo() = di.GetFiles()
' Display the names and sizes of the files.
Dim f As FileInfo
Console.WriteLine("The directory {0} contains the following files:", di.Name)
For Each f In fiArr
Console.WriteLine("The size of {0} is {1} bytes.", f.Name, f.Length)
Next f