private void Initialize()
        {
            ErrorLabel.Visible         = false;
            ErrorContractLabel.Visible = false;
            AllSumCheckBox.Visible     = false;
            ClientPayments             = new ClientPayments(ref ClientsPaymentsDataGrid, ref ClientContractDataGrid);

            TableCurrency = ClientPayments.TableCurrency();
            TableClients  = ClientPayments.TableClients();
            TableFactory  = ClientPayments.TableFactory();

            ClientComboBox.DataSource    = TableClients;
            ClientComboBox.DisplayMember = "ClientName";
            ClientComboBox.ValueMember   = "ClientID";

            ClientContractComboBox.DataSource    = TableClients;
            ClientContractComboBox.DisplayMember = "ClientName";
            ClientContractComboBox.ValueMember   = "ClientID";

            ContractFilteComboBox.DataSource    = ClientPayments.ClientContractBindingSource;
            ContractFilteComboBox.DisplayMember = "ContractNumber";
            ContractFilteComboBox.ValueMember   = "ContractId";

            ContractFilteComboBox.Visible = false;
            PeriodButton.Visible          = false;
            CalendarTo.Visible            = false;
            FilterContractButton.Visible  = false;
            ContractCalendarTo.Visible    = false;
        }