What is the best workaround for the WCF client `using` block issue?

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余生分开走 2020-11-22 00:03

I like instantiating my WCF service clients within a using block as it\'s pretty much the standard way to use resources that implement IDisposable:

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旧巷少年郎 (楼主)

2020-11-22 00:10

The following helper allows to call void and non-void methods. Usage:

var calculator = new WcfInvoker(() => new CalculatorClient());
var sum = calculator.Invoke(c => c.Sum(42, 42));
calculator.Invoke(c => c.RebootComputer());

The class itself is:

public class WcfInvoker
    where TService : ICommunicationObject
{
    readonly Func _clientFactory;

    public WcfInvoker(Func clientFactory)
    {
        _clientFactory = clientFactory;
    }

    public T Invoke(Func action)
    {
        var client = _clientFactory();
        try
        {
            var result = action(client);
            client.Close();
            return result;
        }
        catch
        {
            client.Abort();
            throw;
        }
    }

    public void Invoke(Action action)
    {
        Invoke