Insert picture in datagrid c#

Question

Problem line 13 and 38..data column type is image in sql

Or some recomandition to insert into and update pciture from picture box

 

String cs = "Data Source=.\\SQLEXPRESS;Initial Catalog=bss;Integrated Security=True";
            if (string.IsNullOrEmpty(idTextBox.Text))
            {

                using (SqlConnection openCon = new SqlConnection(cs))
                {
                    string saveStaff = "INSERT into dbo.poslovni_partneri (Ime, data) VALUES (@Ime,@data)";

                    using (SqlCommand querySaveStaff = new SqlCommand(saveStaff))
                    {
                        querySaveStaff.Connection = openCon;
                        querySaveStaff.Parameters.Add("@Ime", SqlDbType.VarChar, 255).Value = imeTextBox.Text;
                        querySaveStaff.Parameters.Add("@data", SqlDbType.image).Value = pictureBox.Text;


                        openCon.Open();
                        querySaveStaff.ExecuteNonQuery();
                        openCon.Close();


                    }

                }
            }

            else
            {


                using (SqlConnection openCon = new SqlConnection(cs))
                {
                    string saveStaff = "UPDATE  dbo.poslovni_partneri SET Ime=@Ime, data=@data WHERE id=" + idTextBox.Text;

                    using (SqlCommand querySaveStaff = new SqlCommand(saveStaff))
                    {
                        querySaveStaff.Connection = openCon;
                        querySaveStaff.Parameters.Add("@Ime", SqlDbType.VarChar, 255).Value = imeTextBox.Text;
                        querySaveStaff.Parameters.Add("@data", SqlDbType.image).Value = pictureBox.Text;

                        openCon.Open();
                        querySaveStaff.ExecuteNonQuery();
                        MessageBox.Show("Uspješno ste izmenili stavku!", "Informacija", MessageBoxButtons.OK, MessageBoxIcon.Information);
                        openCon.Close();
                    }
                }
            }

 For upload picture in picture box use this code and it work...

 

private void button4_Click(object sender, EventArgs e)
        {
            //Read image file
            using (OpenFileDialog ofd = new OpenFileDialog() { Filter = "JPEG|*.jpg", ValidateNames = true, Multiselect = false })
            {
                if (ofd.ShowDialog() == DialogResult.OK)
                {
                    fileName = ofd.FileName;
                    lblFilename.Text = fileName;
                    dataPictureBox1.Image = System.Drawing.Image.FromFile(fileName);
                }
            }
        }