Can you tell me wether or not clustering is supported in version 10.2.7 of the .net sdk, and if so are there any examples available that I can reference?
There is not clustering available directly in the API, but it can be done with some customization. An example that was shown during the 2016 Dev Summit can be found here: http://www.arcgis.com/home/item.html?id=71e82397445a47629e45f15161ca4761. Note that it may not perform well beyond tens of thousands of graphics.
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