Property Setter set multiple times - as many times as a bound subview mentioning it is opened.

TobyK

Hi guys, I have found an issue....

I have a viewmodel with a ToSection property on it. Both Getter and setter etc. the Viewmodel is bound to my Main View. In my main view I have the command bound that opens a new subview that has the ToSection property mentioned in the xaml - this property is not used by anything else. I set the subview bindingcontext to 'this' - being the viewmodel and I'm pusing it onto the nav stack as follows:

                ToSection = null; // Reset To Section Picker.
                await parent.Navigator.PushAsync(
                    new WmsJobItemsToView
                    {
                        BindingContext = this,
                        Title = string.Format("{0} ({1})", e as string, Items.Where(o => o.Pending > 0).Sum(o => o.Pending))
                    });

However, everytime I press the button to open the subview and then set the ToSection property its setter is being called as many times as I've opened the subview - like it isn't releasing the first one when it is popped off the stack? What am I missing?

TobyK

I've actually solved the issue. It was down to the BindingContext being 'this'.... I created a new ViewModel for the view containing the ToSection property and the Command that was needed - and now I'm not getting the ToSection property being set multiple times as I create new instances of both view and model when pushing and popping it as normal.

Thanks @LandLu

LandLu

Could you please post a whole sample to help us reproduce your issue? Without that, we can't detect what problem are you facing.

TobyK

I've actually solved the issue. It was down to the BindingContext being 'this'.... I created a new ViewModel for the view containing the ToSection property and the Command that was needed - and now I'm not getting the ToSection property being set multiple times as I create new instances of both view and model when pushing and popping it as normal.

Thanks @LandLu