ارجو المساعدة في ربط الكود بالform في الفجوال ستوديو

انا احتاج تنفيذ الكود المرفق في لغة السي شارب في برنامج الفجوال ستوديو وربطة مع الform احتاج مساعدة في ربط الكود مع الform واستدعاء الfunction i هذا الكود

using System;

using System.Text;

using System.Collections.Generic;

namespace Checksums

{

/// <summary>
/// Calculates Fletcher's checksums
/// Sample outputs: 
/// Fletcher16: "abcde" -> 51440
/// Fletcher32: "abcde" -> 3948201259
/// Fletcher64: "abcde" -> 14034561336514601929
/// </summary>
public class FletcherChecksum
{
    /// <summary>
    /// Transforms byte array into an enumeration of blocks of 'blockSize' bytes
    /// </summary>
    /// <param name="inputAsBytes"></param>
    /// <param name="blockSize"></param>
    /// <returns></returns>
    private IEnumerable<UInt64> Blockify(byte[] inputAsBytes, int blockSize)
    {
        int i = 0;

        //UInt64 used since that is the biggest possible value we can return.
        //Using an unsigned type is important - otherwise an arithmetic overflow will result
        UInt64 block = 0;

        //Run through all the bytes         
        while(i < inputAsBytes.Length)
        {
            //Keep stacking them side by side by shifting left and OR-ing               
            block = block << 8 | inputAsBytes[i];

            i++;

            //Return a block whenever we meet a boundary
            if(i % blockSize == 0 || i == inputAsBytes.Length)
            {
                yield return block;

                //Set to 0 for next iteration
                block = 0;
            }
        }
    }

    /// <summary>
    /// Get Fletcher's checksum, n can be either 16, 32 or 64
    /// </summary>
    /// <param name="inputWord"></param>
    /// <param name="n"></param>
    /// <returns></returns>
    public UInt64 GetChecksum(String inputWord, int n)
    {
        //Fletcher 16: Read a single byte
        //Fletcher 32: Read a 16 bit block (two bytes)
        //Fletcher 64: Read a 32 bit block (four bytes)
        int bytesPerCycle = n / 16;

        //2^x gives max value that can be stored in x bits
        //no of bits here is 8 * bytesPerCycle (8 bits to a byte)
        UInt64 modValue = (UInt64) (Math.Pow(2, 8 * bytesPerCycle) - 1);

        //ASCII encoding conveniently gives us 1 byte per character 
        byte[] inputAsBytes = Encoding.ASCII.GetBytes(inputWord);

        UInt64 sum1 = 0;
        UInt64 sum2 = 0;
        foreach (UInt64 block in Blockify(inputAsBytes, bytesPerCycle))
        {                   
            sum1 = (sum1 + block) % modValue;
            sum2 = (sum2 + sum1) % modValue;
        }

        return sum1 + (sum2 * (modValue+1));
    }
}

}