We investigated PivotMap behavior in collection update scenarios and found out that when a completely new category is being added the PivotMap doesn't respond correctly. Our developers are currently working on a solution to this problem and it will be released with the next major version. You can workaround this by making the pivotmap rebind itself like this:
var item =
Value = 50
isNewCategory = !
.data.Any(c => c.Category ==
I have created a small app that demonstrates the different scenarios that you can face when updating your collection. Please examine it and let us know if the proposed workaround doesn't work for you.
the Telerik team
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