Working with CLR Objects in SQL Server 2005 or Above Part 2

using System;
using System.Data;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using Microsoft.SqlServer.Server;


[Serializable]
[Microsoft.SqlServer.Server.SqlUserDefinedAggregate(Format.Native)]
public struct xudaf_AsciiSum
{
    private SqlInt32 asciiCount;

    /// <summary>
    /// Initialize will be called once.
    /// </summary>
    public void Init()
    {
        asciiCount = 0;
    }

    /// <summary>
    /// Write your main logic within this.
    /// </summary>
    /// <param name="Value">Should be the value coming from the Sql console</param>
    public void Accumulate(SqlString Value)
    {
        Char[] chr = Value.ToString().ToCharArray();
        for (int i = 0; i < chr.Length; i++)
        {
            asciiCount += Convert.ToInt32(chr[i]);
        }

    }

    /// <summary>
    /// Should call Accumulate. 
    /// </summary>
    /// <param name="Group"></param>
    public void Merge(xudaf_AsciiSum Group)
    {
        Accumulate(Group.Terminate());
    }
    /// <summary>
    /// Represents the Termination condition of the Aggregate function
    /// </summary>
    /// <returns>Return tyoe if the function</returns>
    public SqlString Terminate()
    {
        return asciiCount.ToString();
    }
}