如何在实例化对象上使用反射调用方法？

Question

I have some base objects "Car", "dog", "cat" they implement an interface "IGWUIElement". I have a list of these interfaces: List myList.

At runtime I loop through the list of my elements and by examining the name of the class (using reflection) i need to populate their properties - which are not a part of the interface). I have an xml document descripting the propeties and the value i should assign to them. Here is my interface instantiation.

IGWUIElement newUIElement = (IGWUIElement)Activator.CreateInstance(result);

How do I go about invoking the properties from their name with a particular value (Please note datatypes are limited to int and string). Each object have different properties.

Hope this makes sense...

/H4mm3r

Answer 1

Use PropertyInfo.SetValue()

PropertyInfo piInstance = typeof(IGWUIElement).GetProperty("property_name");
piInstance.SetValue(newUIElement, value, null);

More on msdn .

Answer 2

You can do this like so:

IGWUIElement element = myList[0];

// Set a string property
element.GetType().InvokeMember("SomeStringProperty", BindingFlags.Instance | BindingFlags.Public | BindingFlags.SetProperty, Type.DefaultBinder, element, "The String Value");

// Set an int property
element.GetType().InvokeMember("SomeIntProperty", BindingFlags.Instance | BindingFlags.Public | BindingFlags.SetProperty, Type.DefaultBinder, element, 3);