I have a button that has a datatrigger that is used to disable the button if a certain property is not set to true:

<Button Name="ExtendButton" Click="ExtendButton_Click"  Margin="0,0,0,8">
    <Button.Style>
        <Style>
            <Style.Triggers>
                <DataTrigger Binding="{Binding IsConnected}" Value="False">
                    <Setter Property="Button.IsEnabled" Value="False" />
                </DataTrigger>
            </Style.Triggers>
        </Style>
</Button.Style>

That's some very simple binding, and it works perfectly. I can set "IsConnected" true and false and true and false and true and false, and I love to see my button just auto-magically become disabled, then enabled, etc. etc.

However, in my Button_Click event... I want to:

1. Disable the button (by using ExtendButton.IsEnabled = false;)
2. Run some asynchronous code (that hits a server... takes about 1 second).
3. Re-enable the button (by using ExtendButton.IsEnabled = true;)

The problem is, the very instant that I manually set IsEnabled to either true or false... my XAML binding will never fire again. This makes me very sad :(

I wish that IsEnabled was tri-state... and that true meant true, false meant false and null meant inherit. But that is not the case, so what do I do?