Hello Daniel Billingsley,
You can TwoWay bind the PageIndex dependency property of the pager to the respective property on your model. Your int field in the view model should start as -1, which is the default value for the pager when there is no source defined.
Since you mentioned that inside your view model you know when data has arrived, you can change the PageIndex of the view model at this point of time. Since it is bound two-way, the pager will move to the last page.
Will this work for you?
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items