How do I provide user feedback based on property changed even

See more:

C#

WPF

Boyz and Girlz,

I am calling a routine to update the DB from inside OnPropertyChanged(propertyname) like so...

protected void OnPropertyChanged(string name)
        {
            // Some TEMP employee property changed
            const string PROCNAME = "OnPropertyChanged";

            try
            {
                PropertyChangedEventHandler handler = PropertyChanged;
                if (handler != null)
                {
                    handler(this, new PropertyChangedEventArgs(name));

                    // Call routine to perist changes to DB
                    tempMethods.UpdateTempFromCollection(this, name);
                }
            }
            catch (Exception ex)
            {
                ProgLog.Log(ex.Message, PROCNAME, MODNAME);
            }
        }

Now I need to get the disposition back to the WPF window but since the DB update is begin called via INotifyPropertyChanged on a property INSIDE of a collection it is not clear how to trap the disposition of the DB update and return user feedback to the window.

How have some of you handled this?

What I have tried:

I tried creating a feedback class that implements INotifyPropertyChanged and allowing my DB update routine to change a property inside this class. This approach results in the PropertyChangedEventHanlder begin NULL all the time - even if the triggering property is successfully modified.

My intention was to bind a label inside my WPF window to the DBFeedback property of my feedback class. No worky. :(

<Label x:Name="lblFeedback" Width="235" Height="30" Content="{Binding Path=UserFeedback.DBUpdate}" Grid.Column="1"  HorizontalAlignment="Left" Margin="170,346,0,0" Grid.Row="1" VerticalAlignment="Top" Background="#FFEED8D8"/>