private void btStudentInsert_Click(object sender, EventArgs e)
        {
            switch (cbStudentLogin.Text == "" || tbStudentName.Text == "" ||
                    tbStudentSurname.Text == "" || tbStudentMiddleName.Text == "" ||
                    mtbTicketNumber.Text == "")
            {
            case (true):
                MessageBox.Show("Одно или несколько из полей не заполнены!");
                break;

            case (false):
                switch (btStudentInsert.Text)
                {
                case ("Добавить студента"):
                    DataBaseView view = new DataBaseView();
                    view.qrvProfiles_List += " where [Login_list] = '" + cbStudentLogin.Text + "' and [Status_list] = 'Студент'";
                    view.dtvProfiles_List();
                    try
                    {
                        procedure.spStudent_Insert(view.vdtProfiles_List.Rows[0][0].ToString(), tbStudentSurname.Text, tbStudentName.Text, tbStudentMiddleName.Text, mtbTicketNumber.Text, Convert.ToInt32(cbGroup.SelectedValue.ToString()));
                        cbStudentLogin.Items.Clear();
                        tbStudentMiddleName.Clear();
                        tbStudentName.Clear();
                        tbStudentSurname.Clear();
                        mtbTicketNumber.Clear();
                    }
                    catch
                    {
                        switch (MessageBox.Show("Данного студента нет в системе учётных записей! \n Создать новую учётную запись?", "Создание учётной записи", MessageBoxButtons.YesNo, MessageBoxIcon.Warning))
                        {
                        case DialogResult.Yes:
                            DynamicObjects dynamic = new DynamicObjects();
                            dynamic.parentCreate = this;
                            Thread thread1 = new Thread(dynamic.NewStudentAccountCreate);
                            thread1.Start();
                            break;

                        case DialogResult.No:

                            break;
                        }
                    }
                    break;

                case ("Поменять учебную группу"):
                    DynamicObjects dynamicObjects = new DynamicObjects();
                    dynamicObjects.student = cbStudentLogin.Text;
                    dynamicObjects.parent  = this;
                    Thread thread = new Thread(dynamicObjects.ChangeFormCreate);
                    thread.Start();
                    break;
                }
                break;
            }
        }
        private void btInsertUpdate_Click(object sender, EventArgs e)
        {
            switch (tbPassword.Text != tbConfPass.Text)
            {
            case (true):
                tbPassword.Clear();
                tbConfPass.Clear();
                Registry_Class.error_message += "\n" + DateTime.Now.ToLongDateString() + " пароли не совпадают!";
                btError_Click(sender, e);
                break;

            case (false):
                switch (EmployeeCount)
                {
                case (0):
                    switch (MessageBox.Show(
                                "Создать ноую учётную запись:" +
                                "\n Логин: " + cbLogin.Text + "," +
                                "\n Права доступа: " + cbAccessRights.Text + "," +
                                "\n Персональные данные:" +
                                "\n Фамилия: " + tbSurName.Text + "," +
                                "\n Имя:" + tbName.Text + "," +
                                "\n Отчество: " + tbMiddleName.Text + ".", "Создание нового сотрудника",
                                MessageBoxButtons.YesNo,
                                MessageBoxIcon.Question))
                    {
                    case DialogResult.Yes:
                        DataBaseProcedure procedure = new DataBaseProcedure();
                        procedure.spProfile_New_User(cbLogin.Text, tbPassword.Text, Convert.ToInt32(cbAccessRights.SelectedValue.ToString()), 0, tbImagePath.Text);
                        cbLogin.Text = "";
                        tbPassword.Clear();
                        tbConfPass.Clear();
                        tbSurName.Clear();
                        tbName.Clear();
                        tbMiddleName.Clear();
                        tbImagePath.Clear();
                        break;
                    }
                    break;

                default:
                    switch (OldPassword == tbPassword.Text)
                    {
                    case (true):
                        int access = 0;
                        switch (OldRole == Convert.ToInt32(cbAccessRights.SelectedValue.ToString()))
                        {
                        case (true):
                            access = 1;
                            break;

                        case (false):
                            access = 0;
                            break;
                        }
                        DataBaseProcedure procedure = new DataBaseProcedure();
                        procedure.spProfile_Update_User(cbLogin.Text, tbPassword.Text,
                                                        Convert.ToInt32(cbAccessRights.SelectedValue.ToString()), access, tbImagePath.Text);
                        procedure.spEmployee_Update(cbLogin.Text, tbSurName.Text,
                                                    tbName.Text, tbMiddleName.Text);
                        break;

                    case (false):
                        DynamicObjects dynamicObjects = new DynamicObjects();
                        dynamicObjects.parentCheck = this;
                        dynamicObjects.createCheckPass();
                        break;
                    }
                    break;
                }
                break;
            }
        }