Value cannot be null Parameter name: visualization

Question

Hello Developers,

I have a scatterview wich is the host of a tagview. When I move the tag around the screen extremely fast the application gets an error saying "Value cannot be null Parameter name: visualization". I truly don't have any idea where this error can come from, but it's really anoying. My application isn't idiot proof right now.

Thanx in advance,

Marco Geerarts

Answer 1

I already have discovered it has something to do with the LostTagTimout. When i set that timeout to 2 seconds and move the tags around quickly for 3 seconds the application crashes. When I set the timeout to 20 seconds i'm unable to let the application crash  because I can't shufffle the tags quick en good enough for so long.

Answer 2

Worked it out myself. Jus had to set the scatterview item properti s to ismanipulationenabled = false. Then no manipulations can be made by finger and the application wont crash anymore.