Reads a value to the current Property Editor's control.
This method calls the ReadValueCore method that does nothing in this class. To implement reading the property's value to the Property Editor's control, override the ReadValueCore method in your descendant of the PropertyEditor class. In addition, you can override the CanReadValue method to indicate whether the property's value can now be read to the control. In the PropertyEditor class, this method checks whether the ViewItem.Control property is not set to null (Nothing).
After the property value is read to the Property Editor's control, the PropertyEditor.ValueRead event is raised.