c# - Combining these two Regular Expressions into one

Question

I have the following in C#:

public static bool IsAlphaAndNumeric(string s)
{
    return Regex.IsMatch(s, @"[a-zA-Z]+") 
        && Regex.IsMatch(s, @"d+");
}

I want to check if parameter s contains at least one alphabetical character and one digit and I wrote the above method to do so.

But is there a way I can combine the two regular expressions ("[a-zA-Z]+" and "d+") into one ?

Answer 1

For C# with LINQ:

return s.Any(Char.IsDigit) && s.Any(Char.IsLetter);