Cross-thread operation not valid

Question

Hi everybody,

I have been working in a large project using MRDS, aproximalety 40 services and counting :-), and I am having this problem:

Previously, I developed my simulation project using Windows XP professional and MRDS 2008 R2. Now I am trying to make the same project to work using Windows Seven Professional an MRDS R4 and get the following error message when the scenario meshes are loading:

"Cross-thread operation not valid: Control 'SimulatorUI' accessed from a thread other than the thread it was created on."

and the Microsoft Visual Studio 2010 shows me this error pointing to a line of the code where the SimulationEngine.ResourceCache.CreateMeshFromFile function is called. It looks something like this:

VisualEntityMeshm =SimulationEngine.ResourceCache.CreateMeshFromFile(SimulationEngine.GlobalInstance.Device, Name);

Can anybody give a hand of this? It is something that just surged today and never has happened to me before.

Many thanks for your help,

Antonio.

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amattag

Answer 1

When you get a notification back from the services, it is on a different thread than the UI thread.

You essentially need to do a _wpfServicePort.Invoke to schedule it on the UI thread.

Take a look at it below

http://msdn.microsoft.com/en-us/library/cc998523.aspx