Catch Activating View(port) in a Sheet

[mdb]

Hi,

To update my Dockable Pane to the correct View settings, I should be able to detect which View is active. This works well by capturing the ViewActivated Event, but I did notice that the Event (actually there is no event visible in the Lookup EventMonitor) is not triggered when the View is activated by entering a View(port) in a Sheet.

Is there another way to handle opening a view on a sheet?

[scgq425]

Dear mdb：

 u can use the iddleing event or documentchanged event to monitor this changed .

[mdb]

Unfortunately, the DocumentChanged Event does not notify you when a Viewport is activated.

I'm going to try it via the Idling Event.

Thanks for the tip!

[scgq425]

Dear mdb:

thanks for u reply this message , if u have other idea to solve it , u can tell me . and i will try to solve this in my revit version . thanks

[scgq425]

Dear mdb:

u can use the code to mirror view changed ,and usr a local data to recored this changed , u alsa can use mvvm or implention the notification influence to get the change .

`_localId` is the private id.

```

RevitCommandData.UiApplication.Idling += new EventHandler<IdlingEventArgs>(UiApplicationOnIdling);

private void UiApplicationOnIdling(object sender ,  IdlingEventArgs args)
{
        var uiApp = sender as UIApplication;
        var activeViewId = uiApp.ActiveUIDocument.ActiveView.Id;
        //var transactionName = string.Concat(args.GetTransactionNames());
        if (activeViewId.IntegerValue != _localId.IntegerValue)
        {
            _localId = activeViewId;
            MessageBox.Show($"Changed id : {_localId}");
        }

        //uiApp.Idling -= new EventHandler<IdlingEventArgs>(UiApplicationOnIdling);
}

```

[scgq425]

i find a fast api to solve this . the idling is a idea , the current way is use` ViewActivating` which in uiapplication , like this code :

```

、

RevitCommandData.UiApplication.ViewActivating += (sender, args) =>
{
    var id = args.CurrentActiveView.Id;
    MessageBox.Show($"Changed id : {id}");
};

```

[scgq425]

Hi mdb :

i find a fast api to solve this . the idling is a idea , the current way is use` ViewActivating` which in uiapplication , like this code :

```

、

RevitCommandData.UiApplication.ViewActivating += (sender, args) =>
{
    var id = args.CurrentActiveView.Id;
    MessageBox.Show($"Changed id : {id}");
};

```

[mdb]

Hi @scgq425,

I am already registered for ViewActivated and DocumentChanged, but they do not notify me when I open a Viewport from a sheet.
I also tried the Idling, but immediately I found (which seems a bit logical to me because it keeps checking constantly) that my Revit became laggy when scrolling in the ProjectBrowser.

As a last resort I added a button so i can update the Panel manually.

[scgq425]

hi mdb:
in my code , can monitor the view changed , u use the mvvm to create dock
pane or not ?

[mdb]

@scgq425 

I suspect you are talking about opening a View itself, I already catch this. 😉

I want a notification when a Viewport is opened in a opened Sheet.

Or am I wrong and overlooking something?

[scgq425]

Hello @mdb  :

in this i understand u put is just view changed , but if u just konw viewport u also can use idling to solve it , if use active the view like a section , the activeViewType is a section type , and u not ,this is a viewsheet type , use this to changed u states.