Document is "null".

[oguzkomcu]

I want it to work in the codes I want with Revit opened. " using (var collector = new FilteredElementCollector(doc))" in this line goes into a loop after the code. It also does this in my other "doc" requested codes. As a result, the codes I want do not work. Is it because of "doc = null" or is there a different problem?

[naveen.kumar.t]

Hi @oguzkomcu ,

Please take a look at the below link

https://forums.autodesk.com/t5/revit-api-forum/how-to-get-uiapplication-from-iexternalapplication/td... 

[oguzkomcu · Accepted solution]

I fixed the document error but my loop error continues. When I want "ActiveView", I run the method again, come to the uiapp.OpenAndActivateDocument method, return to the beginning of the method and loop it. What is the reason of this ?

[dantartaglia8696]

Hi,

Error checking helps figure these issues out. Have you tried using a Try{} Catch{}(ex Exception) to see what Revit tells you when you attempt to get the active view? Have you tried getting the active view using Document.ActiveView()?