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CSharp · Console

/Program.cs

using System;
using System.Text.RegularExpressions;
using static System.Console;

public class Program
{
    public static void Main()
    {
        string str = "palavra 1-2-5";
        Regex rgx = new Regex(@"^[a-zA-Z0-9-]+$");

        bool isValid = rgx.IsMatch(str);

        WriteLine(isValid);

        //Para verificar se a string é uma Guid

        Guid result;
        bool isGuid = Guid.TryParse(str, out result);

        WriteLine(isGuid);
    }
}