private void txtSearchValue_TextChanged(object sender, EventArgs e)
        {
            if (txtSearchValue.Text == "")
            {
                SelectedType();
            }
            else
            {
                string property  = cbSearchAttr.SelectedValue.ToString();
                string value     = txtSearchValue.Text;
                string TableName = cbTable.SelectedItem.ToString();
                switch (TableName)
                {
                case "Customers":
                {
                    DisplayTable(cbSearchAttr, dtgvTable, Customers,
                                 Customer.GetCustomerFromProperty(property, value));
                    break;
                }

                case "Drinks":
                {
                    DisplayTable(cbSearchAttr, dtgvTable, Drinks, Drink.GetDrinkFromProperty(property, value));
                    break;
                }

                case "Elements":
                {
                    DisplayTable(cbSearchAttr, dtgvTable, Elements,
                                 Element.GetElementFromProperty(property, value));
                    break;
                }

                case "Employees":
                {
                    DisplayTable(cbSearchAttr, dtgvTable, Employees,
                                 Employee.GetEmployeeFromProperty(property, value));
                    break;
                }

                case "ImportBills":
                {
                    DisplayTable(cbSearchAttr, dtgvTable, ImportBills,
                                 ImportBill.GetImportBillFromProperty(property, value));
                    break;
                }

                case "ExportBills":
                {
                    DisplayTable(cbSearchAttr, dtgvTable, ExportBills,
                                 ExportBill.GetEmployeeFromProperty(property, value));
                    break;
                }

                case "Jobs":
                {
                    DisplayTable(cbSearchAttr, dtgvTable, Jobs, Job.GetJobFromProperty(property, value));
                    break;
                }

                case "Suppliers":
                {
                    DisplayTable(cbSearchAttr, dtgvTable, Suppliers,
                                 Supplier.GetSupplierFromProperty(property, value));
                    break;
                }

                case "Accounts":
                {
                    DisplayTable(cbSearchAttr, dtgvTable, Accounts,
                                 Account.GetAccountFromProperty(property, value));
                    break;
                }
                }
            }
        }