Delete files from directory if filename contains a certain word

Question

I need to check a directory to see if there are any files whose file name contains a specific keyword and if there are, to delete them. Is this possible?

For exampl

Answer 1

new List(Directory.GetFiles(@"C:\Folder")).ForEach(file => {
    if (file.IndexOf("apple", StringComparison.OrdinalIgnoreCase) >= 0)
        File.Delete(file);
});

or

new List(Directory.GetFiles(@"C:\Folder")).ForEach(file => {
    Regex re = new Regex("apple", RegexOptions.IgnoreCase);
    if (re.IsMatch(file))
        File.Delete(file);
});