unassigned lcal variable

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;
using System.Data.SqlClient;

 

namespace image
{
   public partial class Form1 : Form
    {
        public Form1()
        {
           InitializeComponent();
         }

        private void button1_Click(object sender, EventArgs e)
        {
            //use filestream object to read the image.



            //read to the full length of image to a byte array.



            //add this byte as an oracle parameter and insert it into database.
            
            //SqlDataAdapter empadap1;
            //DataSet dset;


            try
            {



                //proceed only when the image has a valid path


                string Image;
                if (Image != "")
                {



                    FileStream fs;



                    fs = new FileStream(@Image, FileMode.Open, FileAccess.Read);



                    //a byte array to read the image



                    byte[] picbyte = new byte[fs.Length];



                    fs.Read(picbyte, 0, System.Convert.ToInt32(fs.Length));



                    fs.Close();



                    //open the database using odp.net and insert the data



                    //string connstr = @"Data Source=.;Initial Catalog=TestImage;

               // Persist Security Info=True;User ID=sa";



                    SqlConnection conn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Documents and Settings\Kiran\My Documents\image.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True");



                    conn.Open();



                    string query;



                    query = "insert into test_table(id_image,pic) values(" +

                    textBox1.Text + "," + " @pic)";



                    SqlParameter picparameter = new SqlParameter();



                    picparameter.SqlDbType = SqlDbType.Image;



                    picparameter.ParameterName = "pic";



                    picparameter.Value = picbyte;



                    SqlCommand cmd = new SqlCommand(query, conn);



                    cmd.Parameters.Add(picparameter);



                    cmd.ExecuteNonQuery();



                    MessageBox.Show("Image Added");



                    cmd.Dispose();



                    conn.Close();



                    conn.Dispose();



                    //Connection();



                }



            }



            catch (Exception ex)
            {



                MessageBox.Show(ex.Message);



            }

 
        }
    }
}