char[] delimiterChars = { ' ', ',', '.', ':', ' ' };
string text = "one two three:four,five six seven";
System.Console.WriteLine($"Original text: '{text}'");
string[] words = text.Split(delimiterChars);
System.Console.WriteLine($"{words.Length} words in text:");
foreach (var word in words)
{
System.Console.WriteLine($"<{word}>");
}