Question

I can’t do this in C#:

    catch (Exception exception)
    {
        var wrappedException = new TException(exception);
    }

Getting error “cannot provide arguments when creating an instance of type parameter ‘TException’. Just wanted to check with the community to see if there is any way to do something like this?

Answer 1

The easiest (and best) method is to call Activator.CreateInstance yourself. This is what the C# compiler actually does, as the new() constraint just ensures that the specified type has a parameterless constructor; calling new TException() actually uses Activator.CreateInstance to instantiate the type.

Something like this would work:

throw (Exception)Activator.CreateInstance(typeof(TException), exception);