Find Total Number of Lines in a File using C#

try
{
    Console.WriteLine("enter folder path: ");
    string folderPath = Console.ReadLine();
    DirectoryInfo dirInfo = new DirectoryInfo(folderPath);

    if (dirInfo != null)
    {
        FileInfo[] allFiles = dirInfo.GetFiles();
        if (allFiles != null && allFiles.Count() > 0)
        {
           foreach (var file in allFiles)
           {
             Console.WriteLine(File.ReadLines(file.FullName).Count());
           }
        }
    }
 }
 catch (Exception ex)
 {
     Console.WriteLine("Error.." + ex.Message);
 }
 finally
 {
     Console.WriteLine("Enter to exit..");
     Console.ReadLine();
 }