[C#] บันทึกรูปจาก picturebox เข้า sql server และดึงรูปจาก sql server มาแสดงใน picturebox ครับ

private void btnAdmin_Add_Click(object sender, EventArgs e)
        {
            try
            {
                string sql = "INSERT INTO profile_tb (Profile_Barcode,Profile_Title,Profile_Firstname,Profile_Lastname,Profile_Position,Profile_Sector,Profile_System,Profile_Username,Profile_Password) VALUES ('" + txtAdmin_Barcode.Text.Trim() + "','" + txtAdmin_Title.Text.Trim() + "','" + txtAdmin_Firstname.Text.Trim() + "','" + txtAdmin_Lastname.Text.Trim() + "','" + txtAdmin_Position.Text.Trim() + "','" + comAdmin_Sector.Text.Trim() + "','" + comAdmin_System.Text.Trim() + "','" + txtAdmin_Username.Text.Trim() + "','" + txtAdmin_Password.Text.Trim() + "')";

                SqlCommand com = new SqlCommand(sql, conn);
                com.ExecuteNonQuery();

                MessageBox.Show("บันทึกเรียบร้อยแล้ว");

                ShowData();
                ClearData();
            }
            catch
            {
                MessageBox.Show("รหัสซ้ำ");
            }
        }

private void txtScan_Search_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
            {
                string sql = "SELECT Profile_Barcode, Profile_Title, Profile_Firstname, Profile_Lastname, Profile_Position, Profile_Sector FROM profile_tb WHERE Profile_Barcode LIKE '%' + '" + txtScan_Search.Text.Trim() + "' + '%'";

                SqlCommand com = new SqlCommand(sql, conn);
                SqlDataReader dr = com.ExecuteReader();

                if (dr.Read())
                {
                    txtScan_Barcode.Text = (dr["Profile_Barcode"].ToString() + dr["Profile_Title"].ToString());
                    txtScan_Title.Text = (dr["Profile_Title"].ToString());
                    txtScan_Firstname.Text = (dr["Profile_Firstname"].ToString());
                    txtScan_Lastname.Text = (dr["Profile_Lastname"].ToString());
                    txtScan_Position.Text = (dr["Profile_Position"].ToString());
                    txtScan_Sector.Text = (dr["Profile_Sector"].ToString());
                }
                else
                {
                    txtScan_Barcode.Text = ("");
                    txtScan_Title.Text = ("");
                    txtScan_Firstname.Text = ("");
                    txtScan_Lastname.Text = ("");
                    txtScan_Position.Text = ("");
                    txtScan_Sector.Text = ("");
                }
                dr.Close();

                txtScan_Search.Text = "";
            }

private void dagAdmin_Show_CellMouseClick(object sender, DataGridViewCellMouseEventArgs e)
        {
            if (e.RowIndex == -1)
            {
                return;
            }
            txtAdmin_Barcode.Text = dagAdmin_Show.Rows[e.RowIndex].Cells[0].Value.ToString();
            txtAdmin_Title.Text = dagAdmin_Show.Rows[e.RowIndex].Cells[1].Value.ToString();
            txtAdmin_Firstname.Text = dagAdmin_Show.Rows[e.RowIndex].Cells[2].Value.ToString();
            txtAdmin_Lastname.Text = dagAdmin_Show.Rows[e.RowIndex].Cells[3].Value.ToString();
            txtAdmin_Position.Text = dagAdmin_Show.Rows[e.RowIndex].Cells[4].Value.ToString();
            comAdmin_Sector.Text = dagAdmin_Show.Rows[e.RowIndex].Cells[5].Value.ToString();
            comAdmin_System.Text = dagAdmin_Show.Rows[e.RowIndex].Cells[6].Value.ToString();
            txtAdmin_Username.Text = dagAdmin_Show.Rows[e.RowIndex].Cells[7].Value.ToString();
            txtAdmin_Password.Text = dagAdmin_Show.Rows[e.RowIndex].Cells[8].Value.ToString();          
        }