用户定义的WCF绑定配置中无法识别的属性名称

Question

I'm writing a custom WCF binding that would like to control using configuration. To be clear, I'm not talking about using the standard <customBinding> element, but rather inheriting from Binding and writing a full class.

My binding isn't very complicated, and I really only have one property that I would like to set through config, useSsl . However, I am having difficulty getting .NET to recognize my configuration attribute even though I believe I have everything in order.

Binding

public class MyCustomBinding : Binding {

    public MyCustomBinding() {
        // Initialization
    }

    private bool _useSsl;

    public bool UseSsl {
        get { return _useSsl; }
        set { _useSsl = value; }
    }

    // Remaining implementation omitted

}

Binding Configuration Element

public class MyCustomBindingElement : StandardBindingElement {

      protected override Type BindingElementType {
          return typeof(MyCustomBinding);
      }

      // public const string UseSsl = "useSsl"
      [ConfigurationProperty(ConfigurationStrings.UseSsl, DefaultValue: true)]
      public bool UseSsl {
          get { return (bool)this[ConfigurationStrings.UseSsl]; }
          set { this[ConfigurationStrings.UseSsl] = value; }
      }


      // Remaining implementation omitted

}

Binding Configuration Collection Element

public class MyCustomBindingCollectionElement
    : StandardBindingCollectionElement<MyCustomBinding, MyCustomBindingElement> {}

I've registered the collection element in my web.config file:

  <extensions>
      <bindingExtensions>
          <add name="myCustomBinding" type="MyCustomWcf.MyCustomBindingCollectionElement, MyCustomWcf"/>
      </bindingExtensions>
  </extensions>

Then in my <bindings> section I add an instance of my custom binding.

<myCustomBinding>
    <binding useSsl="false" />
</myCustomBinding>

However, I receive the following configuration exception at runtime:

Unrecognized attribute 'useSsl'. Note that attribute names are case-sensitive

If I do not specify any properties on my binding, then it works. What am I doing wrong here?

Answer 1

At a quick glance. You specify ConfigurationStrings.UseSsl, but in the config you put useSsl. Can you correct this and try again?

Answer 2

The "Properties" property of MyCustomBindingElement also need to be updated as below. Hope helpful ...

    protected override ConfigurationPropertyCollection Properties
    {
        get
        {
            var result = base.Properties;
            result.Add(new ConfigurationProperty("useSsl", typeof(bool)));

            return base.Properties;
        }
    }