image in MySQL database

Question

I have problem with image into mysql(blob). I'll paste some of my code and if you know what's the problem or have some suggestions please help.

 private byte[] imagedata=null;

//this function is for retrieving data from mysql(blob)

private byte[] getImage()
        {
            MySqlConnection objConn;
            objConn = new MySqlConnection("SERVER=localhost;" +
            "DATABASE=database;" +
            "UID=root;" +
            "PASSWORD=root;charset=utf8");

            string strSql = "SELECT * FROM customers where id=" + this.id;
            DataSet ds = new DataSet();
            MySqlDataAdapter tempAP = new MySqlDataAdapter(strSql, objConn);
            MySqlCommandBuilder objCommand = new MySqlCommandBuilder(tempAP);
            tempAP.Fill(ds, "customers");

            try
            {
                objConn.Open();
                byte[] buffer = (byte[])ds.Tables["customers"].Rows[0][13];
                return buffer;
            }
            catch { objConn.Close(); return null; }
            finally { objConn.Close(); }

        }

//this function read from file to byte[]

private byte[] ReadFile(string sPath)
        {
            byte[] data = null;

            FileInfo fInfo = new FileInfo(sPath);
            long numBytes = fInfo.Length;

             FileStream fStream = new FileStream(sPath, FileMode.Open,
                                                    FileAccess.Read);
             BinaryReader br = new BinaryReader(fStream);

            data = br.ReadBytes((int)numBytes);
            return data;
        }

//browse resize upload image (WORKS)
private void button5_Click(object sender, EventArgs e)
        {
            pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize;
            string imageName = GenerateId();
            imageName = imageName + ".jpg";
            this.slika = imageName;
            
            
                OpenFileDialog open = new OpenFileDialog();

                open.Filter = "Image Files(*.jpg; *.jpeg; *.gif; *.bmp)|*.jpg; *.jpeg; *.gif; *.bmp";

                if (open.ShowDialog() == DialogResult.OK)
                {                                   
                    System.Reflection.Assembly exe = System.Reflection.Assembly.GetEntryAssembly();
                    string exePath = System.IO.Path.GetDirectoryName(exe.Location);
                    string fullImageName = exePath +"\\images\\"+ imageName;                    
                    ResizeImage(open.FileName, fullImageName , 240, 240, false);

                    imagedata = ReadFile(fullImageName);
                    
                    System.IO.MemoryStream stream1 = new System.IO.MemoryStream(imagedata, true);
                    stream1.Write(imagedata, 0, imagedata.Length);
                    Bitmap m_bitmap = (Bitmap)Bitmap.FromStream(stream1);
                    pictureBox1.Image = m_bitmap;                  
                }                
        }

Then i insert imagedata into database
 mysql_cmd.CommandText = "insert into customers (image) Values ('" + imagedata + "')";

and this also WORKS...imagedata is in the database (blob field)

But when i try to get image from database  

 imagedata = getImage();
if (imagedata != null)
{
System.IO.MemoryStream stream1 = new System.IO.MemoryStream(imagedata, true);
stream1.Write(imagedata, 0, imagedata.Length);
Bitmap m_bitmap = (Bitmap)Bitmap.FromStream(stream1);
pictureBox1.Image = m_bitmap;
}
i have error message