How to get an object from RuntimePropertyInfo?

Question

I'm trying to find all properties containing an object that implelents an interface, and execute a method on the object. This is the code I have so far:

foreach (var propertyInfo in this.GetType().GetProperties()
    .Where(xx => xx.GetCustomAttributes(typeof(SearchMeAttribute), false).Any()))
{
    if (propertyInfo.PropertyType.GetInterfaces().Any(xx => xx == typeof(IAmSearchable)))
    {
        // the following doesn't work, though I hoped it would
        return ((IAmSearchable)propertyInfo).SearchMeLikeYouKnowIAmGuilty(term);
    }
}

Unfortunately, I get the error:

Unable to cast object of type 'System.Reflection.RuntimePropertyInfo' to type 'ConfigurationServices.ViewModels.IAmSearchable'.

How can I get the actual object, rather than the RuntimePropertyInfo?

Answer 1

You need to get the value from the property with the GetValue method:

object value = propertyInfo.GetValue(this, null);

The this is the "target" of the property, and the null indicates that you're expecting just a parameterless property, not an indexer.