protected override void Invoke()

in src/Microsoft.Xaml.Behaviors/Core/CallMethodAction.cs [59:91]
30 lines of code
10 McCabe index (conditional complexity)

        protected override void Invoke(object parameter)
        {
            if (this.AssociatedObject != null)
            {
                MethodDescriptor methodDescriptor = this.FindBestMethod(parameter);
                if (methodDescriptor != null)
                {
                    ParameterInfo[] parameters = methodDescriptor.Parameters;

                    // todo jekelly: reconcile these restrictions with spec questions (see below)
                    if (parameters.Length == 0)
                    {
                        methodDescriptor.MethodInfo.Invoke(this.Target, null);
                    }
                    else if (parameters.Length == 2 && this.AssociatedObject != null && parameter != null)
                    {
                        if (parameters[0].ParameterType.IsAssignableFrom(this.AssociatedObject.GetType())
                            && parameters[1].ParameterType.IsAssignableFrom(parameter.GetType()))
                        {

                            methodDescriptor.MethodInfo.Invoke(this.Target, new object[] { this.AssociatedObject, parameter });
                        }
                    }
                }
                else if (this.TargetObject != null)
                {
                    throw new ArgumentException(string.Format(CultureInfo.CurrentCulture,
                        ExceptionStringTable.CallMethodActionValidMethodNotFoundExceptionMessage,
                        this.MethodName,
                        this.TargetObject.GetType().Name));
                }
            }
        }