Method BeginQuery
BeginQuery()
Overridden by concrete data provider class. the base class will call this method when InitialLoad or Refresh has been called and will delay this call if refresh is deferred ot initial load is disabled.
protected virtual void BeginQuery()Remarks
The implementor can choose to execute the query on the same thread or on a background thread or using asynchronous API. When the query is complete, call OnQueryFinished to have the public properties updated.