Select the Data Context
Note
This wizard step appears only if you're creating a new report from scratch. If you're modifying an existing report, this step will not appear and you will start with the Choose Fields to Display in a Report wizard page.
On this page, select the required data context from the list of available data contexts.
If the Browse button is available on this page, you can also select a data context from a custom assembly.
Click Next to proceed to the next wizard page: Select a Connection String.