/// <summary>
        /// Modify an article of the database.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button_Modify_Click(object sender, EventArgs e)
        {
            var Description     = this.textBox_Description.Text;
            var MarqueName      = this.comboBox_Marque.Text;
            var FamilleName     = this.comboBox_Famille.Text;
            var SousFamilleName = this.comboBox_SousFamille.Text;
            var PrixHT          = this.textBox_PrixHT.Text;
            var Quantite        = this.textBox_Quantite.Text;

            if (Description == "")
            {
                MessageBox.Show("Please enter the Description!", "ERROR");
            }

            else if (MarqueName == "")
            {
                MessageBox.Show("Please enter the Marque Name!", "ERROR");
            }

            else if (FamilleName == "")
            {
                MessageBox.Show("Please enter the Famille Name!", "ERROR");
            }

            else if (SousFamilleName == "")
            {
                MessageBox.Show("Please enter the SousFamille Name!", "ERROR");
            }

            else if (PrixHT == "")
            {
                MessageBox.Show("Please enter the Price!", "ERROR");
            }

            else if (Quantite == "")
            {
                MessageBox.Show("Please enter the Quantite!", "ERROR");
            }

            else if (!float.TryParse(PrixHT, out var Prix))
            {
                MessageBox.Show("Please enter the right price!");
            }

            else if (!int.TryParse(Quantite, out var Number))
            {
                MessageBox.Show("Please enter the right quantity!");
            }

            else
            {
                if (!SousFamilleController.FindSousFamilleBySousFamilleName(SousFamilleName))
                {
                    if (MessageBox.Show("SousFamille doesn't exsite! Do you want to add a new SousFamille?", "Confirm Message", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
                    {
                        AddSousFamille AddSousFamille = new AddSousFamille {
                            StartPosition = FormStartPosition.CenterParent
                        };
                        AddSousFamille.ShowDialog(this);
                    }
                    else
                    {
                        return;
                    }
                }
                if (!MarqueController.FindMarqueByMarqueName(MarqueName))
                {
                    if (MessageBox.Show("Marque doesn't exsite! Do you want to add a new Marque?", "Confirm Message", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
                    {
                        AddMarque AddMarque = new AddMarque {
                            StartPosition = FormStartPosition.CenterParent
                        };
                        AddMarque.ShowDialog(this);
                    }
                    else
                    {
                        return;
                    }
                }

                SousFamilles SousFamille = SousFamilleController.FindSousFamillesBySousFamilleName(SousFamilleName);
                Marques      Marque      = MarqueController.FindMarquesByMarqueName(MarqueName);
                Articles     Article     = new Articles(this.label_ReferenceArticle.Text, Description, FamilleController.FindFamillesByRefSousFamille(SousFamille.RefSousFamille), SousFamille, Marque, float.Parse(PrixHT), int.Parse(Quantite));

                if (!ArticleController.CompareArticles(ArticleController.FindArticlesByRefArticle(Article.RefArticle), Article))
                {
                    ArticleDao.ModifyArticle(Article);
                    if (ArticleController.FindArticleByRefArticle(Article.RefArticle))
                    {
                        MessageBox.Show("Modify succeed!");
                        this.Close();
                    }
                }
                else
                {
                    MessageBox.Show("The article can't be the same before and after modification!");
                    return;
                }
            }
        }