title: Checking if a dataset has any rows
body: <p>In my current reportviewer i have a dataset that returns rows of information from stored procedure. I wanted to add a parameter in my report to display in the header area of the report the count of rows in the report. If there is no information to return to the reportviewer obviously the rows count will be 0. Is there a way in which i could try to count how many rows there are in the dataset/table and return that number in the header area in a textbox without linking it to any dataset?</p>