I have a class like this:
public class Proxy<TClient>() where TClient : ClientBase<TChannel> { } I want to be able to specify something like this:
where TClient : ClientBase<TChannel> where TChannel : class but without specifying it in the class definition like so:
public class Proxy<TClient, TChannel>() Is there a way to do this or am I required to have the second type definition as above?
That's not possible. You have to include TChannel as a generic type parameter of Proxy.
One of the options to get over this “limitation” (in quotes because it is a by-design feature that arises from how the C# type system works) is to use an interface which each channel would be supposed to implement:
public interface IChannel { … } public class Proxy<TClient>() where TClient : ClientBase<IChannel> { } public class MyObscureChannel : IChannel { … } public class MyObscureClient : ChannelBase<MyObscureChannel> { … } … var client = new Proxy<MyObscureClient>(…); // MyObscureChannel is implied here 
TChannelcome from?Proxy<TClient, TChannel>.TChannelis required forClientBase(which comes from System.ServiceModel). There is no non-generic alternative.TClientin your class? You could potentially omitTClientand just declare members usingClientBase<TChannel>, depending on usage.