C#

using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using System.IO;

namespace MusicStoreImageManager
{
    class ProductDB
    {
        // define the directory for the images
        static string imagesPath = "C:/Users/Rattlerr/Pictures/Images/";

        public static SqlConnection GetConnection()
        {
            SqlConnection connection = new SqlConnection();
            connection.ConnectionString =
                "Data Source=RATTLERR;Initial Catalog=Test;Integrated Security=False;User ID=sa;Password=SomePassword";
            return connection;
        }

        public static void WriteImage(int productID, string imageName)
        {
            SqlConnection connection = null;
            SqlTransaction transaction = null;
            try
            {
                // 1. Set up the input stream from the image file
                string filepath = imagesPath + imageName;
                if (File.Exists(filepath) == false)
                    throw new Exception("File Not Found: " + filepath);

                FileStream sourceStream = new FileStream(
                    filepath,
                    FileMode.Open,
                    FileAccess.Read);

                // 2. Initialize the row in the table
                connection = GetConnection();

                SqlCommand command = new SqlCommand();
                command.Connection = connection;
                command.CommandText =
                    "INSERT INTO ProductImages " +
                    "VALUES (@ProductID, " +
                    "        CAST(@RowID AS uniqueidentifier), 0)";

                Guid rowID = Guid.NewGuid();
                command.Parameters.AddWithValue("@ProductID", productID);
                command.Parameters.AddWithValue("@RowID", rowID);

                connection.Open();
                command.ExecuteNonQuery();

                // 3. Get a reference to the BLOB
                transaction = connection.BeginTransaction();
                command.Transaction = transaction;
                command.CommandText =
                    "SELECT ProductImage.PathName(), " +
                    "       GET_FILESTREAM_TRANSACTION_CONTEXT() " +
                    "FROM ProductImages " +
                    "WHERE RowID = CAST(@RowID AS uniqueidentifier)";
                command.Parameters.Clear();
                command.Parameters.AddWithValue("@RowID", rowID);

                SqlDataReader reader = command.ExecuteReader();
                if (reader.Read() == false)
                    throw new Exception("Unable to get path and context for BLOB.");
                string path = (string)reader[0];
                byte[] context = (byte[])reader[1];
                reader.Close();

                // 4. Set up the output stream to the database
                SqlFileStream targetStream = new SqlFileStream(path, context, FileAccess.Write);                

                // 5. Read from file and write to database
                int blockSize = 1024 * 512;
                byte[] buffer = new byte[blockSize];
                int bytesRead = sourceStream.Read(buffer, 0, buffer.Length);
                while (bytesRead > 0)
                {
                    targetStream.Write(buffer, 0, bytesRead);
                    bytesRead = sourceStream.Read(buffer, 0, buffer.Length);
                }

                targetStream.Close();
                sourceStream.Close();
                transaction.Commit();
            }
            catch (Exception e)
            {
                if (transaction != null)
                    transaction.Rollback();
                throw e;
            }
            finally
            {
                if (connection != null)
                    connection.Close();
            }
        }

        public static Byte[] ReadImage(int imageID) 
        {
            SqlConnection connection = null;
            SqlTransaction transaction = null;
            try 
            {
                connection = GetConnection();
                connection.Open();
                transaction = connection.BeginTransaction();

                SqlCommand command = new SqlCommand();
                command.Connection = connection;
                command.Transaction = transaction;
                command.CommandText =
                    "SELECT ProductImage.PathName(), " +
                    "       GET_FILESTREAM_TRANSACTION_CONTEXT() " +
                    "FROM ProductImages " +
                    "WHERE ImageID = @ImageID";

                command.Parameters.AddWithValue("@ImageID", imageID);

                SqlDataReader reader = command.ExecuteReader();
                if (reader.Read() == false)
                    throw new Exception("Unable to get path and context for BLOB.");
                string path = (string)reader[0];
                byte[] context = (byte[])reader[1];
                reader.Close();

                // Set up the input stream from the database
                SqlFileStream sourceStream = new SqlFileStream(path, context, FileAccess.Read);                

                int blockSize = 1024 * 512;
                byte[] buffer = new byte[blockSize];
                List<byte> imageBytes = new List<byte>();
                int bytesRead = sourceStream.Read(buffer, 0, buffer.Length);
                while (bytesRead > 0)
                {
                    bytesRead = sourceStream.Read(buffer, 0, buffer.Length);
                    foreach(byte b in buffer)
                        imageBytes.Add(b);                        
                }
                sourceStream.Close();

                return imageBytes.ToArray();
            }
            catch (Exception e) 
            {
                throw e;
            }
            finally 
            {
                if (connection != null)
                    connection.Close();
            }
        }

        public static List<int> GetImageIDList()
        {
            SqlConnection connection = null;
            try
            {
                connection = GetConnection();

                SqlCommand command = new SqlCommand();
                command.Connection = connection;
                command.CommandText = 
                    "SELECT ImageID FROM ProductImages " +
                    "ORDER BY ImageID";

                connection.Open();
                SqlDataReader reader = command.ExecuteReader();
 
                List<int> imageIDList = new List<int>();
                while (reader.Read())
                {
                    int imageID = (int)reader[0];
                    imageIDList.Add(imageID);
                }
                reader.Close();

                return imageIDList;
            }
            catch (Exception e)
            {
                throw e;
            }
            finally
            {
                if (connection != null)
                    connection.Close();
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using System.IO;

namespace MusicStoreImageManager
{
    public partial class ImageManagerForm : Form
    {
        public ImageManagerForm()
        {
            InitializeComponent();
        }

        private void LoadImageIDComboBox()
        {
            // load the combo box
            List<int> imageIDList = ProductDB.GetImageIDList();
            foreach (int i in imageIDList)
                imageIDComboBox.Items.Add(i);
        }

        private void ImageManagerForm_Load(object sender, EventArgs e)
        {
            this.LoadImageIDComboBox();
            imageIDComboBox_SelectedIndexChanged(sender, e);
        }

        private void imageIDComboBox_SelectedIndexChanged(
            object sender, EventArgs e)
        {
            try
            {
                int imageID = Convert.ToInt32(imageIDComboBox.Text);

                // read image bytes from the database and display in picture box
                Byte[] imageByteArray = ProductDB.ReadImage(imageID);
                MemoryStream ms = new MemoryStream(imageByteArray);
                imagePictureBox.Image = System.Drawing.Image.FromStream(ms);
                ms.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(this, ex.Message, "Error");
            }
        }

        private void uploadButton_Click(object sender, EventArgs e)
        {
            try
            {
                int productID = Convert.ToInt32(productIDTextBox.Text);
                string filename = filenameTextBox.Text;
                ProductDB.WriteImage(productID, filename);
                MessageBox.Show(this, "Image upload was successful!", 
                    "Upload Confirmation");

                // refresh combo box
                imageIDComboBox.Items.Clear();
                this.LoadImageIDComboBox();
            }
            catch (Exception ex)
            {
                MessageBox.Show(this, ex.Message, "Error");
            }
        }
    }
}

private Dictionary<int, Action<int>> IntKeyValueCode = new Dictionary<int, Action<int>>();

// and a method like this:

private void Method1(int someInt, string someString, double someDouble)
{
    MessageBox.Show(string.Format("Method1: int: {0} string: {1} double: {2}", someInt, someString, someDouble));
}

// You can then do something like this:

private string someString = "a string";
private double someDouble = 199.994;

// test
private void TestCodeInDictinary()
{
    IntKeyValueCode.Add(1, value => Method1(value, someString, someDouble));  
    IntKeyValueCode[1](100);
}