Cross-page Web Part Connections

Some interfaces can be used to connect a Web Part on one page (the source page) to a Web Part on a different page (the target page). The behavior is similar to a hyperlink.

You should keep the following about cross-page connections in mind:

• A Web page editor that is compatible with Microsoft® Windows® SharePoint™ Services, such as Microsoft Office FrontPage® 2003 is required to author cross-page connections. However, once a cross-page connection has been formed, it can be used by any supported Web browser at run time.
• Only connectable Web Parts that have implementations designed to run on the server (CanRunAt = ConnectionRunAt.Server or CanRunAt = ConnectionRunAt.ServerAndClient ) can establish cross-page connections. Connections that are formed on the client side are not allowed to cross Web Pages.

The following table shows the interfaces that can be connected across pages.

When working with cross-page Web Part connections, you must:

• Pass ConnectionRunAt.Server or ConnectionRunAt.ServerAndClient to the runAtOptions parameter of the RegisterInterface(String, String, Int32, Microsoft.SharePoint.WebPartPages.Communication.ConnectionRunAt, object, String, String, String, Boolean) method
• Pass true to the allowCrossPageConnection parameter of the RegisterInterface(String, String, Int32, Microsoft.SharePoint.WebPartPages.Communication.ConnectionRunAt, object, String, String, String, Boolean) Method
• Implement the GetInitEventArgs method to provide specific information about data that is passed through the connection interface.

For information about creating connectable Web Parts, see Creating a Connectable Web Part.