Question

Is it possible to create connected web parts in Sharepoint that have multiple connections to the provider.

For example,
Web Part A and B are the provider, and Web Part C is the consumer.

A is the provider to consumer C, and B is also the provider to consumer C.

Thanks.

Rhys,
I tried this and doesn’t seem to work. The consumer web part only works with whatever the last provider it sets to.

[ConnectionConsumer("KeywordsConsumer", "KeywordsID", AllowsMultipleConnections=true)]
public void ProviderReceiver1(ICommunicationChannel p)
{
       provider = p;
}

[ConnectionConsumer("NewEmployeeConsumer", "ID", AllowsMultipleConnections=true)]
public void ProviderReceiver2(ICommunicationChannel p)
{
    provider = p;
}

Answer 1

I believe the problem is that your using the same variable (provider) to store both references – thus one will replace the other.

Use

private ICommunicationChannel _keywordsProvider;
private ICommunicationChannel _newEmployeeProvider;

[ConnectionConsumer("KeywordsConsumer", "KeywordsID", AllowsMultipleConnections=true)]
public void ProviderReceiver1(ICommunicationChannel p)
{
     _keywordsProvider = p;
}

[ConnectionConsumer("NewEmployeeConsumer", "ID", AllowsMultipleConnections=true)]
public void ProviderReceiver2(ICommunicationChannel p)
{
     _newEmployeeProvider = p;
}