topic Get Join Information for Invalid Layer in ArcObjects SDK Questions

Get Join Information for Invalid Layer

MichaelFischer — Thu, 06 Feb 2014 20:18:22 GMT

I've got some layers from an SDE database; that have joins in them.

The problem is the database has been moved to a new server, so I need to update the connection strings; I can change the the datasource for the main layer and reconnect fine; however unless the database is there, the join connection information is blank.

i.e. the IDisplayTable.DisplayTable is null....

Is there any other method of reading what the Joins are on a layer, when the layer is not valid? For example the Invalid layer still has it's original IWorkspaceName so I change change the server name, but nothing for the join

Thanks

Re: Get Join Information for Invalid Layer

NeilClemmons — Fri, 07 Feb 2014 13:34:36 GMT

It's been a while since I've had to work with joins on a layer but I believe you can access them through IRelationshipClassCollection, which is an interface implemented by the layer object.

Re: Get Join Information for Invalid Layer

MichaelFischer — Fri, 07 Feb 2014 18:21:20 GMT

It's been a while since I've had to work with joins on a layer but I believe you can access them through IRelationshipClassCollection, which is an interface implemented by the layer object.

Thanks for the suggestion, IRelationshipClassCollection doesn't work with featureclass to featureclass joins, so don't think it will work 'offline' either

M