What's wrong in my code?

private void btnaddinfo_Click(object sender, EventArgs e)
        {
            string scn = ConfigurationManager.ConnectionStrings["Myconn"].ConnectionString;
            using (SqlConnection cn = new SqlConnection(scn))
                {
                using (SqlCommand cmd = new SqlCommand("SP_Info", cn))
                {
                    try
                    { 
                        byte[] img = null;
                        FileStream fs = new FileStream(imageloc, FileMode.Open, FileAccess.Read);
                        BinaryReader br = new BinaryReader(fs);
                        img = br.ReadBytes((int)fs.Length);     

                        cmd.CommandType = CommandType.StoredProcedure;

                        cmd.Parameters.Add("@Hp_Number", SqlDbType.NVarChar, 50).Value = tbhpnum.Text; ;
                        cmd.Parameters.Add("@Customer_Name", SqlDbType.VarChar, 50).Value = tbcusnam.Text;
                        cmd.Parameters.Add("@Customer_Contact_Number", SqlDbType.NVarChar, 15).Value = tbcusmblno.Text;
                        cmd.Parameters.Add("@Guarantor_Name", SqlDbType.VarChar, 50).Value = tbguanam.Text;
                        cmd.Parameters.Add("@Guarantor_Contact_Number", SqlDbType.NVarChar, 15).Value = tbguamblno.Text;
                        cmd.Parameters.Add("@Hp_Date", SqlDbType.DateTime).Value = DateTime.Parse(tbhpdat.Text);
                        cmd.Parameters.Add("@Customer_Address", SqlDbType.NVarChar, Max).Value = tbcusadd.Text;
                        cmd.Parameters.Add("@Vehicle", SqlDbType.VarChar, 50).Value = tbveh.SelectedItem.ToString();
                        cmd.Parameters.Add("@Vehicle_Model", SqlDbType.VarChar, 50).Value = tbvehmod.SelectedItem.ToString();
                        cmd.Parameters.Add("@Vehicle_Number", SqlDbType.NVarChar, 50).Value = tbvehnum.Text;
                        cmd.Parameters.Add("@Chasis_Number", SqlDbType.NVarChar, 50).Value = tbchanum.Text;
                        cmd.Parameters.Add("@Engine_Number", SqlDbType.NVarChar, 50).Value = tbengnum.Text;
                        cmd.Parameters.Add("@FC_Date", SqlDbType.DateTime).Value = DateTime.Parse(tbfcdat.Text);
                        cmd.Parameters.Add("@Insurance_Date", SqlDbType.DateTime).Value = DateTime.Parse(tbinsdat.Text);
                        cmd.Parameters.Add("@Insurance_Amount", SqlDbType.Int).Value = Convert.ToInt32(tbinsamt.Text);
                        cmd.Parameters.Add("@Paid_Amount", SqlDbType.Int).Value = Convert.ToInt32(tbpaiamt.Text);
                        cmd.Parameters.Add("@Vehicle_Pic", SqlDbType.Image).Value = boxvehpic;
                        cmd.Parameters.Add("@Customer_Pic", SqlDbType.Image).Value = boxcuspic;
                        cmd.Parameters.Add("@Guarantor_Pic", SqlDbType.Image).Value = boxguapic;
                        cmd.Parameters.Add("@Documents_Pic", SqlDbType.Image).Value = boxdocpic;
                        cmd.Parameters.Add("@Insurance_Pic", SqlDbType.Image).Value = boxinspic;

                        if (cn.State != ConnectionState.Open)
                            cn.Open();
                        int count = cmd.ExecuteNonQuery();
                        if (count == 1)
                        {
                            MessageBox.Show(count.ToString() + "Record(s) Saved.");
                        }
                        else
                        {
                            MessageBox.Show("Please correct the error which you have entered and then click on addinformation button");
                        }
                    }
                    catch (SqlException ex)
                    {
                        MessageBox.Show(ex.ToString());

                    }
                    finally
                    {
                        if (cn.State == ConnectionState.Open)
                            cn.Close();
                    }
                }
            }
        }