Assume that an object of the DirectoryInfo is instantiated using the identifier dirListing. How could you retrieve the names of all files stored in dirListing that have a file extension of .cs?
A) foreach(FileInfo fil in dirListing.GetFiles("*.cs"))
B) foreach(FileInfo fil in dirListing.GetFiles("cs"))
C) foreach(DirectoryInfo dirListing in File.GetFiles("*.cs"))
D) foreach(DirectoryInfo dirListing in File.GetFiles("cs"))

Question

Quizplus · Accepted Answer

The method GetFiles() of the DirectoryInfo class can be used to retrieve an array of files in a directory. The method takes a string argument called searchPattern, which specifies the file search pattern. In this case, "*.cs" is used to retrieve all files with a .cs extension. The foreach loop can then be used to iterate through each file returned by the GetFiles() method.

Assume That an Object of the DirectoryInfo Is Instantiated Using