Hmm,

I was almost done building a nice sample project to illustrate all of this without the clutter of my actual project, when I made an unexpected discovery... the issue is not withe the HierarchialDataTemplate after all.  It is the UXTreeView.

Using <Intersoft:DragDropBehavior> on a TreeViewItem does not work...  It seems I may need to find another way to implement Drag capability on the treeview item?

No, I want to disable keyboard input / navigation/selection within the UXListBox completely.  The UXListBox is contained within a window that remains visible on top of the drawing surface so that the user can select what layer they are drawing on, make the selected layer hidden or visible etc. 

Once they click on a layer (Templated UXListBoxItem Bound to a list of "Layer" items) to select that layer, and then go back to the canvas and try to draw on that layer, if they are using the arrow keys to move the cursor aka keyboard drawing, then the highlighted layer in the ListBox changes each time they press the arrow keys and if they hit 'space' it changes what layer they are on.

The UXListBox is receiving and processing keyboard input events, even while they are on another part of the page outside of the window that contains the UXListBox.  I want to completely disable keyboard input within the UXListBox (or perhaps the window that contains it?  I am not sure what is the most correct route to take with it, but I need the Layers panel (UXListBox currently contained within a UXWindow that sits on top of the rest of the applicaiton) to completely stop processing keyboard input events so that the user can control the drawing with the keyboard without messing up what layer they have selected.

To Illustrate I have included a couple of images: 

The first image shows the drawing on the canvas and the layers panel opened, in the layerspanel I have selected layer 1 and begun to draw with my mouse.

In the second image, I have tried to continue drawing the line with the keyboard by pressing the down arrow twice.  As you can see, while the line did continue to be drawn, the window containing my layers (or perhaps it is the listbox which still somehow retains focus) has also processed the keyboard input and now the layers panel is showing layer 3 highlighted rather then layer 1... it actually still has layer 1 selected, but if i hit the space bar then layer 3 would become selected.  One way or another I need to get this layers panel to completely stop processing keyboard input events.  Whether there is a way to disable keyboard input / navigation in the control, or to somehow force it to completley lose focus when you click back on the drawing surface...

Having a very similar issue trying to create the mvvm business or ClientUI Desktop applications in c#.  I checked the vs2010 template directories and the zip file for the templates are there in both locations.  All other templates seem to work fine but when attempting to use the mvvm business app or Desktop app templates it creates the App project then fails the App.web project with the followin error:

could not be found. (Exception from HRESULT: 0x800300002 (STG_E_FILENOTFOUND))

 Any ideas?

Yes Jimmy, in fact this was the first thing that I checked, as our company uses trend micro for the network antivirus etc, and at first i assumed that was the problem, however 3 of the 8 computers we tested in the office that are running it performed beautifully, same with the other solutions... several of the test machines were running microsoft security essentials and malware bytes and the results on them were inconsistant as well.  

I am however still of th eopinion that the issue lies within the software and or driver configurations, some sort of conflict with the silverlight runtime or what not, simply because so many varying test machines have poerformed both good and bad with no apparent consistancy between the machines / results. 

And yes I have tried many browsers, IE8, IE9 beta, FireFox, Chrome... the results are consitant... them, machines which are running the silverlight apps poorly, run it poorly in all 3 browsers, and in OOB install.  Same with the good performance.  I honestly do not believe this is an issue with the browser.  However I do believe tha t this is an issue outside of our machines and our testing, as I run across random posts all over the place of people having really bad performance with silverlight (lots of them on the various toolkit / ui suite forums) yet many others cannot reproduce the issues.  So I am thinking it has something to do with software or driver / config conflicts with something that is pretty standardly used since it pops up in so many places.  (though you dont realize it until you are having he problem and looking for a solution... then you see how many others are having similar unexplanable and unreproducable performance issues.

I will go over the programs again on each computer and see but finding a consistancy is hard, we even did a fresh OS install and perfrmed all of the updates and got th esame poor performance. It's rather baffling to be honest.

I have recently made an interesting discovery through various testing concerning this performance issue and I believe that I can safely say it has nothing to do with your suite nor, Silverlight’s overall capabilities as a whole.  In fact it is looking very much like a compatibility issue or configuration issue.

On a whim, I loaded my test application, your guys desktop demo application, and the main application that I am working on, all on an 8 year old, single core 2GHz, 2GB RAM, 128 MB video card laptop... and they ran perfectly!  No choppy animations, no laggy input... everything ran great.  To further test this I put it on my Toshiba Tablet pc, (Dual Core 2GHz, 2GB RAM, 256MB integrated / shared video, and it ran even better than the first laptop.  I then went home and ran the same samples on my home computer, Dual Core 3.1 GHz, 4GB RAM, 1GB ATI 5850 Video, and it ran like crap, just as it does with all of the desktop pc's at my office.  So I further tested it by going to a friend’s house and trying it out on all 4 of his computers, 3 desktops (his, his sons, and his wife’s) and 1 laptop.  The laptop and his wife’s computers ran it perfectly, yet his and his sons machines were choppy and unusable.

The only thing that I have been able to identify so far as a "consistent difference" is that each of the computers that ran it fine, also had no silverlight plugins installed on them prior to the testing and the plugin was installed when i first went to your desktop gallery.  However uninstalling previous versions of silverlight and letting your site trigger the install again did not fix the issue on the machines that are having the performance issue.  

The only thing I can determine thus far are:

1. It is not a hardware issue, the apps were testing on many various machines of all sorts of hardware grade levels and the results were extremely inconsistent, some low end machines ran it superbly, some like crap, while the same held true for the more powerful machines, some ran great, some like crap.

2. It is not a direct capabilities limitation in silverlight, as it ran very well on some very low end machines during the testing.

3. It is not a bug in the ClientUI suite, as once again, there were several computers in the testing that ran it very well, and the same issue was present on other SL apps that did not use ClientUI, with the same results, they ran well on the computers which ran the ClientUI sample well, and poorly on the ones which ran ClientUI sample poorly.

I honestly have no idea what could be the different on this many machines that would cause it, the only consistency I have seen so far is that the ones which ran it well, all installed silverlight for the first time when I tested them.  I am going to do a few more tests on clean machines and see if that holds true.  If so, I will need to dig deeper than the normal uninstall for lingering libraries which might remain loaded and such (since uninstalling and reinstalling silverlight did not fix it on the machines which ran poorly).  If i come across anything I will definitely post it here.

Also if anyone has some feedback on what might be causing silverlight in general to run great on some machines, and really poorly on others with complete disregard to the quality of the hardware in the machines, I would GREATLY appreciate the feedback on it.

Thanks