In order to achieve the desired you would need to set the desired StringFormat in the Xaml definition of the needed AggregateDescription as demonstrated below:
This will initially show the AggregateDescription with that format, however when modifing the Pivot at run time this format will be lost. So you would also need to hook to the PrepareDescriptionForField event of the provider in order to apply
the format every time the fields in the FieldList are changed as shown below:
sender, PrepareDescriptionForFieldEventArgs e)
var aggregateDescription = e.Description
(e.DescriptionType == Telerik.Pivot.Core.DataProviderDescriptionType.Aggregate && aggregateDescription !=
&& aggregateDescription.PropertyName ==
Hope this helps.
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