How to invoke method, using reflection, on instantiated object?

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

grega g · Accepted Answer · 2009-09-30 16:48:56Z

5

Use PropertyInfo.SetValue()

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

Comments

Reed Copsey · Accepted Answer · 2009-09-30 16:49:53Z

4

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);

answered Sep 30, 2009 at 16:49

Reed Copsey

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