CapDemo.GUI.User_Controls.ImportQuestionToQuestionStore.cmb_Catalogue_SelectedIndexChanged C# (CSharp) Метод

        private void cmb_Catalogue_SelectedIndexChanged(object sender, EventArgs e)
        {
            //dgv_Question.Columns.Clear();
            Catalogue catalogue = new Catalogue();
            CatalogueBL CatBL = new CatalogueBL();

            List<DO.Catalogue> CatList;
            CatList = CatBL.GetCatalogue();
            if (CatList != null)
                for (int i = 0; i < CatList.Count; i++)
                {
                    if (cmb_Catalogue.SelectedItem.ToString() == CatList.ElementAt(i).NameCatalogue)
                    {
                        catalogue.IDCatalogue = CatList.ElementAt(i).IDCatalogue;
                    }
                }

            QuestionBL QuestionBL = new QuestionBL();
            List<DO.Question> QuestionList;
            QuestionList = QuestionBL.GetQuestionByCatalogue(catalogue);
            if (QuestionList != null)
            {
                dgv_Question.DataSource = QuestionList;
                dgv_Question.Columns["IDCatalogue"].Visible = false;
                dgv_Question.Columns["IDQuestion"].Visible = false;
                dgv_Question.Columns["AnswerContent"].Visible = false;
                dgv_Question.Columns["Catalogue"].Visible = false;
                dgv_Question.Columns["NameCatalogue"].Visible = false;
                dgv_Question.Columns["Date"].Visible = false;
            }

            chk_CheckAll.Checked = false;
        }