public void DeleteDirectoryContents()
        {
            try
            {
                if (!HasFolderPermission || !HasFilePermission)
                {
                    return;
                }

                Assert.IsFalse(IoDir.DirectoryExists(TestFolder + "//"), "Invalid directory path");
                Assert.IsTrue(IoDir.CreateDirectory(TestFolder + "//"), "Error creating directory");
                Assert.IsTrue(IoDir.DirectoryExists(TestFolder + "//"), "Error creating directory");

                for (var d = 0; d < 5; d++)
                {
                    if (d == 0)
                    {
                        for (var i = 0; i < 20; i++)
                        {
                            IoFiles.CreateFile(TestFolder + "//" + i + ".txt", i.ToString(CultureInfo.InvariantCulture));
                        }
                    }


                    IoDir.CreateDirectory(TestFolder + "//" + d + "//");

                    for (var i = 0; i < 20; i++)
                    {
                        IoFiles.CreateFile(TestFolder + "//" + d + "//" + i + ".txt", i.ToString(CultureInfo.InvariantCulture));
                    }
                }

                var mainFilesCount   = IoFiles.GetCountOfFilesInDirectoryAndSubdirectories(TestFolder + "//");
                var mainFoldersCount = IoDir.GetCountOfSubdirectories(TestFolder + "//");
                Assert.IsTrue(mainFilesCount > 0, "Error counting files on directory");
                Assert.IsTrue(mainFoldersCount > 0, "Error counting subdirectories");

                Console.WriteLine("Files count: {0}", mainFilesCount);
                Console.WriteLine("Subdirectories count: {0}", mainFoldersCount);

                Assert.IsTrue(IoDir.DeleteDirectoryContents(TestFolder + "//"), "Error deleting directory content");

                mainFilesCount   = IoFiles.GetCountOfFilesInDirectoryAndSubdirectories(TestFolder + "//");
                mainFoldersCount = IoDir.GetCountOfSubdirectories(TestFolder + "//");
                Console.WriteLine("\nFiles count: {0}", mainFilesCount);
                Console.WriteLine("Subdirectories count: {0}", mainFoldersCount);

                Assert.IsTrue(mainFilesCount == mainFoldersCount && mainFilesCount == 0, "Error deleting files and subdirectories");
            }
            finally
            {
                if (HasFolderPermission)
                {
                    IoDir.DeleteDirectory(TestFolder + "//");
                }
            }
        }