Iterating files in a folder based on file extensions using LINQ

Using LINQ, iterating through specific files based on file extensions in a directory can be somewhat simplified.


using System.Linq;
using System.IO;
...

string fileExtensions = ".pdf, .tif, .jpg, .bmp";
string [] fileExtensionArray = 
    fileExtensions.split(',').Select(e => e.Trim().ToLower()).ToArray();

DirectoryInfo di = new DirectoryInfo("C:\\myDir");
FileInfo[] fileInfoArray = 
    di.GetFiles()
        .Where(f => fileExtensionArray.Contains(f.Extension.ToLower()))
        .ToArray();
...
foreach( var item in fileInfoArray )
{
    string fileFullPath = item.FullName;
    // Perform your work with the desired file here.
}