After upgrading to the newest reporting version, a report that had been working fine previously started giving the following error:
An error has occured while processing Report '':
Unable to cast object of type 'DataObject' to type 'Telerik.Reporting.Expressions.IHierarchicalData'.
After some experimentation I found that removing the textbox in the report's footer that used Count(RowNumber()) (to display the total count of detail items) the error went away and the report worked as before. How can I show the count without getting an error?
Thanks,
Mike
An error has occured while processing Report '':
Unable to cast object of type 'DataObject' to type 'Telerik.Reporting.Expressions.IHierarchicalData'.
After some experimentation I found that removing the textbox in the report's footer that used Count(RowNumber()) (to display the total count of detail items) the error went away and the report worked as before. How can I show the count without getting an error?
Thanks,
Mike
1 Answer, 1 is accepted
0
Hi Mike,
The RowNumber() function is an aggregate function itself in Q1, so it is wrong to add it as argument to another argument function. If you want to count the records you should use Count(Fields.MyField), which would not count the records returning null, or Count(some_constant_here) which would return all records.
Thank you for bringing this to our attention. We would make the error message more user friendly, so that it is clear what is wrong.
Kind regards,
Steve
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? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.
The RowNumber() function is an aggregate function itself in Q1, so it is wrong to add it as argument to another argument function. If you want to count the records you should use Count(Fields.MyField), which would not count the records returning null, or Count(some_constant_here) which would return all records.
Thank you for bringing this to our attention. We would make the error message more user friendly, so that it is clear what is wrong.
Kind regards,
Steve
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? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.