System.ComponentModel.DebugReflectPropertyDescriptor.ResetValue C# (CSharp) Method

        public override void ResetValue(object component) {
            object invokee = GetDebugInvokee(componentClass, component);

            if (DefaultValue != noValue) {
                SetValue(component, DefaultValue);
            }
            else if (AmbientValue != noValue) {
                SetValue(component, AmbientValue);
            }
            else if (ResetMethodValue != null) {
                ISite site = GetSite(component);
                IComponentChangeService changeService = null;
                object oldValue = null;
                object newValue;

                // Announce that we are about to change this component
                //
                if (site != null) {
                    changeService = (IComponentChangeService)site.GetService(typeof(IComponentChangeService));
                    Debug.Assert(!CompModSwitches.CommonDesignerServices.Enabled || changeService != null, "IComponentChangeService not found");
                }

                // Make sure that it is ok to send the onchange events
                //
                if (changeService != null) {
                    oldValue = GetMethodValue.Invoke(invokee, (object[])null);
                    try {
                        changeService.OnComponentChanging(component, this);
                    }
                    catch (CheckoutException coEx) {
                        if (coEx == CheckoutException.Canceled) {
                            return;
                        }
                        throw coEx;
                    }
                    catch {
                        throw;
                    }

                }

                if (ResetMethodValue != null) {
                    ResetMethodValue.Invoke(invokee, (object[])null);

                    // Now notify the change service that the change was successful.
                    //
                    if (changeService != null) {
                        newValue = GetMethodValue.Invoke(invokee, (object[])null);
                        changeService.OnComponentChanged(component, this, oldValue, newValue);
                    }
                }
            }
        }