Generate random words & dates

Randomize.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Models
{
    public class Text
    {
        static Random Rand = new Random();

        public static string GetRandomWords(short Count)
        {
            return GenerateRandomWords(1);
        }

        public static string GetRandomWords(short MinCount, short MaxCount)
        {
            return GenerateRandomWords(Rand.Next(MinCount, MaxCount));
        }

        private static string GenerateRandomWords(int SentenceCount)
        {
            StringBuilder Sb = new StringBuilder();

            for (int i = 0; i < SentenceCount; i++)
            {
                int WordCount = Rand.Next(3, 10);
                for (int j = 0; j < WordCount; j++)
                    Sb.Append(char.ConvertFromUtf32(Rand.Next(97, 123)));

                Sb.Append(" ");
            }

            return Sb.ToString();
        }

        public static IEnumerable<DateTime> GetRandomDates(short Count, DateTime RangeStartDate, DateTime RangeEndDate)
        {
            if (Count < 1)
                return null;

            int Range = (RangeEndDate - RangeStartDate).Days;

            List<DateTime> Dates = new List<DateTime>();

            Random Rand = new Random();

            for (short i = 0; i < Count; i++)
                Dates.Add(RangeStartDate.AddDays(Rand.Next(0, Range)));

            return from d in Dates
                   select d;
        }
    }
}