Image to byte to DB to image to picture box C# SQL server

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C#

SQL

I'm a beginner and sorry for what I am asking but I need help and enlightenment. So this is what I come up and what I got from a members article, and i'm having trouble understanding it. So this is what I made that causes error "Object reference not set to an instance of an object." :

What I have tried:

using System.Data.SqlClient;
using System.Drawing.Imaging;
using System.IO;

namespace Kenny
{
public partial class Form1 : Form
{
SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=master;Integrated Security=True");
SqlCommand cmd;
SqlDataAdapter adapt;

public Form1()
{
InitializeComponent();
}


private void buttonsave_Click(object sender, EventArgs e)
{
Image myImage = pictureBox1.Image;
byte[] data;
using (MemoryStream ms = new MemoryStream())
{
myImage.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp);
data = ms.ToArray();
}

con.Open();
cmd = new SqlCommand("INSERT INTO table(picture) VALUES (@image)", con);
{
cmd.Parameters.AddWithValue("@image", data);
cmd.ExecuteNonQuery();
}
con.Close();
}

private void buttonbrowseimage_Click(object sender, EventArgs e)
{
// open file dialog
OpenFileDialog open = new OpenFileDialog();
// image filters
open.Filter = "Image Files(*.jpg; *.jpeg; *.gif; *.bmp)|*.jpg; *.jpeg; *.gif; *.bmp";
if (open.ShowDialog() == DialogResult.OK)
{
// display image in picture box
Image myImage = new Bitmap(open.FileName);
}
}

private void buttonview_Click(object sender, EventArgs e)
{

cmd = new SqlCommand("SELECT picture FROM kenny WHERE Id=@id", con);
con.Open();
cmd.Parameters.AddWithValue("@ID", pictureBox1.Image);
SqlDataReader reader = cmd.ExecuteReader();
if (reader.Read())
{
byte[] data = (byte[])reader["Picture"];
using (MemoryStream stream = new MemoryStream())
{
myImage = new Bitmap(stream);
}
}
}
}
}



what i have: picture box that responds to browse button and should also display image when view or loaded. save button for saving it to the DB.