private void ExecuteDeleteMaintenance(object parameter) { int _id = ((MaintenanceRecordModel)parameter).ID; if (_id != 0) { IMessageBoxService _msgbox = new MessageBoxService(); if (_msgbox.ShowMessage("Do you want to delete this Maintenance?", "Deleting Maintenance", GenericMessageBoxButton.OKCancel, GenericMessageBoxIcon.Question) == GenericMessageBoxResult.OK) { DeleteItem(_id, "MaintenanceRecords"); Maintenance.Remove((MaintenanceRecordModel)parameter); } _msgbox = null; } }