Password Validator

using System;
using System.Linq;
namespace ConsoleApp47
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            char[] array;
            array = input.ToCharArray();
            int charsNumber = 0;
            bool charNumber = true;
            for (int i = 0; i < array.Length; i++)
            {
                charsNumber++;
            }
            if (charsNumber < 6 || charsNumber > 10)
            {
                Console.WriteLine(PrintCharNumber(charsNumber));
                charNumber = false;
            }
            int digitsNumber = 0;
            bool charCheck = true;
            bool digitNumber = true;
            for (int i = 0; i < array.Length; i++)
            {
                int charNum = array[i];
                if (charNum <= 48 && charNum >= 57)
                {
                    if (charNum <= 65 && charNum >= 90)
                    {
                        if (charNum <= 97 && charNum >= 122)
                        {
                            Console.WriteLine(CharsCheck());
                            charCheck = false;
                        }

                    }
                }
                if (charNum >= 48 && charNum <= 57)
                {
                    digitsNumber++;
                }
            }
            if (digitsNumber < 2)
            {
                Console.WriteLine(DigitsCheck());
                digitNumber = false;
            }
            if (digitNumber == true && charNumber == true && charCheck == true)
            {
                Console.WriteLine("Password is valid");
            }
        }
        static string PrintCharNumber(int number)
        {
            string output = "Password must be between 6 and 10 characters";
            return output;
        }
        static string CharsCheck()
        {
            string output = "Password must consist only of letters and digits";
            return output;
        }
        static string DigitsCheck()
        {
            string output = "Password must have at least 2 digits";
            return output;
        }
    }
}