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c#task-parallel-librarytpl-dataflow

TPL Dataflow how to remove the link between the blocks


I would like to know. How can I remove the link between the blocks? In other words. I want to get opposite of LinkTo.

I want to write a logger based on tlp dataflow.

I wrote this interface and want to delete a subscription for ILogListener when it needed.

public interface ILogManager
{
    void RemoveListener(ILogListener listener);
}

Solution

  • When you link blocks:

    var link = someSourceBlock.LinkTo(someTargetBlock);
    

    you get a return value that implements IDisposable.

    To kill the link, just dispose of that return value:

    link.Dispose();
    

    See the .LinkTo documentation (in particular the section about the return statement):

    Return Value

    Type: System.IDisposable

    An IDisposable that, upon calling Dispose, will unlink the source from the target.