Three dimension property in class

The way I'd do it is to drop the whole idea of a three dimensional array, and create a class that has three properties: X, Y, and Z - and by preference make then numeric values rather than strings, as that makes using them considerably easier later.

Then create a collection (which can be a single dimensional array, or a List) of that new class. That way, the three values for a single building are kept together.

Review my solution it might has hidden error but it works fine....

namespace AllocationInClass
{
    public partial class Form1 : Form
    {
        public class Bill
        {
            private const int MAX_CHAR_ARRAY_LENGTH=32;

            private const int SIZE_OF_CHAR = 1;
            private const int SIZE_OF_INT = 4;
            //private const int SIZE_OF_DOUBLE = 8;
            public  const int SIZE_OF_ALL_MEMBERS = SIZE_OF_INT +
                                                   3 * 4 * 5* SIZE_OF_CHAR * MAX_CHAR_ARRAY_LENGTH + 
                                                   124;//padding


            private int recordId;
            private string[][][] billname=new string[3][][];

            //
            public Bill()
            {
                int k1,k2,k3;
                for (k1 = 0; k1 < 3; k1++)
                {
                    billname[k1] = new string[4][];
                    for (k2 = 0; k2 < 4; k2++)
                    {
                        billname[k1][k2] = new string[5];
                        for (k3 = 0; k3 < 5; k3++)
                        {
                            billname[k1][k2][k3] = "";
                        }
                    }
                }
            }
            public Bill(int XrecordId, string[][][] Xbillname)
            {
                RECORDID = XrecordId;
                BILLNAME = Xbillname;
            }
            public int RECORDID
            {
                get { return recordId; }
                set { recordId = value; }
            }
            public string[][][] BILLNAME
            {   
                get { return billname; }
                set
                {
                    int k1, k2, k3;
                    int[][][] stringSize = new int[3][][];
                    string[][][] billnameString = new string[3][][];
                    for (k1 = 0; k1 < 3; k1++)
                    {
                        stringSize[k1] = new int[4][];
                        billnameString[k1] = new string[4][];
                        for (k2 = 0; k2 < 4; k2++)
                        {
                            stringSize[k1][k2] = new int[5];
                            billnameString[k1][k2] = new string[5];
                            for (k3 = 0; k3 < 5; k3++)
                            {
                                stringSize[k1][k2][k3] = value[k1][k2][k3].Length;
                                billnameString[k1][k2][k3] = value[k1][k2][k3];

                                if (MAX_CHAR_ARRAY_LENGTH >= stringSize[k1][k2][k3])
                                {
                                    billnameString[k1][k2][k3] = value[k1][k2][k3] + new string(' ', MAX_CHAR_ARRAY_LENGTH - stringSize[k1][k2][k3]);
                                }
                                else
                                {
                                    billnameString[k1][k2][k3] = value[k1][k2][k3].Substring(0, MAX_CHAR_ARRAY_LENGTH);
                                }
                                //billname = billnameString.ToCharArray();
                                billname[k1][k2][k3] = billnameString[k1][k2][k3];
                            }//k3
                        }//k2
                    }//k1
                }//set
            }
        }//Bill

        Bill[] bly = new Bill[2];
        public Form1()
        {
            InitializeComponent();
        }

        private void FormLoad(object sender, EventArgs e)
        {
            int i,j,k1,k2,k3;
            MessageBox.Show(Bill.SIZE_OF_ALL_MEMBERS.ToString(), "SIZE_OF_ALL_MEMBERS");
            for (i = 0; i < 2; i++)
            {
                bly[i] = new Bill();
                bly[i].RECORDID = i;
                for (k1 = 0; k1 < 3; k1++)
                {
                    for (k2 = 0; k2 < 4; k2++)
                    {
                        for (k3 = 0; k3 < 5; k3++)
                        {
                            bly[i].BILLNAME[k1][k2][k3] = "Hello " + k1.ToString() + "," + k2.ToString() + "," + k3.ToString();
                            MessageBox.Show(bly[i].BILLNAME[k1][k2][k3],
                            "bly[" + i.ToString() + "].BILLNAME[" + k1.ToString() + "]" + "[" + k2.ToString() + "]" + "[" + k3.ToString() + "]");
                        }//k3
                    }//k2
                }//k1
            }//i
        }//FormLoad
    }
}