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Here's a simple repro case. First the ...
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Your first problem - why does the rectangle in column 1 overlap the one in column zero - can be solved by moving the StackPanel for column 1 above the StackPanel for column 0 in the Xaml. Things are rendered in document order (unless you're using a Canvas and ZIndex) so if you want column 0 on top, put it last in the Xaml. This is one of ...
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It sounds like what you want is one of the new elements added by the Silverlight control: MapPolyline. I works just like a normal Polyline except that you give it a collection of Location coordinates instead of screen coordinates. this means you only need to work in Lat/Long and never need to convert to screen coords yourself - the control ...
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Is there any reason why you make two calls to BeginInvoke? It would seem that you can set both properties in a single call - both the lambda method and the delegate method support arbitrary code blocks.
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You say your MSIs are using JPGs, but do you mean the source images or the output of Deep Zoom Composer?
In your dzi file, in the first <Image> tag, does it say Format="jpg" or Format="png"?
I've suffered from this error when using a PNG-output deep zoom image, but I've been successfully developing exactly ...
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Thanks, Stefan, that's very useful indeed. Although the thought of regenerating 2.5m tiles as jpg doesn't fill me with delight, if it will avoid this issue then it'll be worth it.
Out of interest, is it png in general? We were intending to change from 24bit PNG to 8bit indexed (because our images still look OK like that) ...
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Unfortunately, the project isn't public and the deep zoom image consists of over 2.5 million tiles so it's not an easy one to share. The tiles are PNG in this instance.
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Having tried another few times, I can confirm that the first trace matches the problem with the browser just disappearing. The second trace leads to an integer overflow, which I suspect is what's causing the Measure call to complain about NaN.
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OK, I've got two different stacktraces. The first looks the most like the main problem:
First-chance exception at 0x7c94e392 (ntdll.dll) in iexplore.exe: 0xC0000029: An invalid unwind target was encountered during an unwind operation.
> ntdll.dll!_RtlUnwind@16() + 0x18f08 bytes ...
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It's probably bad form to bump my own reply, but I'm really suffering from this bug. It happens with alarming regularity in my project. Now, I'm doing lots of fairly complex things - animating the ViewportWidth and Origin of a deep zoom image, animating some custom dependency properties, the scale transform on a canvas and properties ...