I'm using MS Reports for Forms in a WPF Desktopapplication. No I'm testing your WPF Reportviewer. I can't get it to work. I take a .rdlc File Version 2008 only with one Tablix table. At MS reports I have a DataSet.xsd File and connect the DataSource in the Code behind. With your report viewer I can't get the data into the report. I have already tried with a List element but without success. How can I add the data to the report at runtime?