Problem with references in revit api C# visual studio

[marcintromski]

Hi, Im new to Revit API. I have done some tutorials. but yesterday I got many errors. I googled it but I havent found any solutions. Please help me to resolve this problem. I attach printscreen.

 

[marcintromski]

when i change UIApplication, UIDocument, Application and Document to: Autodesk.Revit.UI.UIApplication uiapp = commandData.Application;

Autodesk.Revit.UI.UIDocument uidoc = uiapp.ActiveUIDocument;

Application app = uiapp.Application;

Document doc = uidoc.Document;

there is no error, whats wrong with my code? Later Selection and Element are not found also

[nice3point]

can you show your .csproj file?

[marcintromski]

.csproj file

[nice3point · Accepted solution]

your problem with wrong using directives and wrong namespace matching. In this case you use UIApplication struct instead of Autodesk.Revit.UI.UIApplication.

Just use var instead of explicit type specification. This is more handy than writing Autodesk.Revit.UI.UIApplication a = commandData.Application;

[marcintromski]

thank you 🙂