Issue while binding to a selectionchanged command for GridView using MVVM

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MVVM

Hi,

I am using MVVM model for my application. I have 2 Views that contains a GridView each. Both of them are binding to the same command in the ViewModel for GridView's selection changed.

<GridControl Grid.Row="0" Grid.Column="1" x:Name="TaskItemsGridView" SelectionChangedCommand=" {Binding ShowSelectedTaskCommand}" ItemsSource="{Binding ActiveTaskList, Mode=TwoWay}" SelectedItem="{Binding ActiveTask, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}"/>

ShowSelectedTaskCommand is invoking a function that performs some functions and updates ActiveTask.

I am facing two issues here.

a) I need to do an additional db save after which the ActiveTask will be set , when selection changed command is invoked from View1. My issue is even if I make the commands separate to handle this situation, both the commands are executed as I need to update ActiveTask in between. So if one command updates ActiveTask, it will fire SelectionChanged for other command. How can i tackle this situation. b) Since both functions are called in both cases, how can I add some condition to perform db save.

Below is my func for reference

private void ShowSelectedTask()
        {
            if (ActiveTask.EventId != TaskId && !string.IsNullOrEmpty(ActiveTaskName))
                UpdateTaskInformation(TaskId); // It updates ActiveTask

              // TO DO: DB save to be performed if this command is invoked from View1.

            if (ActiveTask != null)
            {
                TaskId = ActiveTask.EventId;
                ....

            }
        }

Note: The only difference in the functionalities from both the view is the additional db save. Rest of the code are common for both. Please help.

Thanks