How to write a Memory Scanner using C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
using System.Drawing.Drawing2D;
using Sojaner.MemoryScanner;

namespace MemoryScanner
{
    public partial class FreezeWindow : Form
    {
        public FreezeWindow()
        {
            InitializeComponent();
            #region User Interface
            Bitmap bitmap = new Bitmap(this.Width, this.Height);
            Graphics graphic = Graphics.FromImage(bitmap);
            graphic.SmoothingMode = SmoothingMode.AntiAlias;
            Rectangle rectangle = new Rectangle(0, 0, this.Width, this.Height);
            LinearGradientBrush brush = new LinearGradientBrush(rectangle, Color.LightSteelBlue, Color.SteelBlue, 90, true);
            graphic.FillRectangle(brush, rectangle);
            Bitmap terminalBitmap = global::MemoryScanner.Properties.Resources.Hat;
            int distance = (this.Height - terminalBitmap.Height) / 2;
            Rectangle imageRectangel = new Rectangle((distance / 2), distance, terminalBitmap.Width, terminalBitmap.Height);
            graphic.DrawImage(terminalBitmap, imageRectangel);
            Pen pen = new Pen(Brushes.White, 4);
            graphic.DrawRectangle(pen, rectangle);
            this.BackgroundImage = (Image)bitmap;
            #endregion
        }

        MemoryPass[] pass;

        Process process;

        MemoryFreeze freeze;

        public Process Process
        {
            set { process = value; }
        }

        internal MemoryPass[] Pass
        {
            set { pass = value; }
        }

        private void FreezeWindow_Load(object sender, EventArgs e)
        {
            freeze = new MemoryFreeze(process);
            for (int i = 0; i < pass.Length; i++)
            {
                switch (pass[i].Type)
                {
                    case 0:
                        freeze.AddMemoryAddress(pass[i].Address, (Int16)pass[i].Value);
                        break;
                    case 1:
                        freeze.AddMemoryAddress(pass[i].Address, (Int32)pass[i].Value);
                        break;
                    case 2:
                        freeze.AddMemoryAddress(pass[i].Address, (Int64)pass[i].Value);
                        break;
                }
                listBox.Items.Add("0x" + Convert.ToString(pass[i].Address, 16).ToUpper() + "-> (" + pass[i].Value.ToString() + ")");
            }
            try
            {
                freeze.StartFreezing(10);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "error", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            }
        }

        private void closeButton_Click(object sender, EventArgs e)
        {
            try
            {
            freeze.StopFreezing();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "error", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            }
            Application.Exit();
        }

    }
}