In the design view, right-click on a binding object and click Set
PortType>Existing PortType.
The Specify Port Type wizard is
displayed. In the Name field, type a
search string to filter the list or leave the field blank to view all.
You can change the scope of the list by selecting one of the following
options:
Workspace: lists the port types available in your
workspace.
Enclosing Project: lists the port types available in
the project that contains your file.
Current Resource: lists the port types available in
your current file.
Working Sets: lists the port types available in a
specified set of files. To specify a working set, click
Choose. You can select files from an existing working
set or create a new working set. Once you have selected the files, click
OK.
The existing port types will be listed in the Components area. The Declaration
Location field shows where the selected port type is
located. Select the port type you want and click OK.