Understanding Headers and Footers
Headers and footers in client report definition (RDLC) report layouts have the following limitations:
From the header, you cannot refer to group-specific information in the body.
You can have only one report header, one body, and one report footer in a report.
Note You can have group headers and footers and table headers and footers. Note Report Viewer 2012 does not render hidden expressions in headers or footers.
The following topic describes modifications that require creating a new hidden text box so that the data can be used in a header or footer:
For more information about Visual Studio report layouts, see Defining a Report Layout.