Error inputfield

Hi, I have a touch screen. When i tap on InputField control the console show me this error:

2637376--185543--Cattura.PNG

How i can resolve?

thanks

You call a function from not allowed thread, like for ex., you can only access XAML UI elements from UI thread.
To catch this place, you could enable exceptions in Visual Studio, Debug->Windows->Exceptions, launch the program and continue until you reach that exception.