Easy Reflection question C#

Question

I want to supply unknown "object" and return the value of one of its members. Response is required in C#.

Generically I guess I'm looking for the code to this method public static object GetObjectMemberValue (object myObject, string memberName)

More specifically I'm doing this for resource strings in Silverlight and need to write this method. It resides in a common project is used against a few different Resx dictionaries, thus I don't have access to the type information. public static string GetString (object StringResources, string ResourceId)

Thank you!

Answer 1

if you know the objects type, then cast to it?

Or it should at least implement an interface if you don't know the explicit type?

MyType value = (MyType)objectGetter() //this is the function that returns the unknown.
value.GetMember()

Answer 2

First get the type of the object:

Type myObjectType = myObject.GetType();

Then, you can use the returned Type object to get the property's info, and then it's value.

Answer 3

This will get your value... Can you give me more info in the resx part of the question?

public static object GetObjectMemberValue(object myObject, string memberName)
{
  PropertyInfo dateProperty = myObject.GetType().GetProperty(memberName);
  return dateProperty.GetValue(myObject, null);
}

Answer 4

static class ObjectExtensions {
    public static object GetObjectPropertyValue(this object o, string propertyName) {
        return o.GetType().GetProperty(propertyName).GetValue(o, null);
    }
}

class Test {
    public string Message {get; set;}
}

class Program {
    static void Main(string[] args) {
        object t = new Test { Message = "Hello, World!" };
        Console.WriteLine(t.GetObjectPropertyValue("Message").ToString());
    }
}

Answer 5

o.GetType().InvokeMember( "MemberName", BindingFlags.Public | BindingFlags.Instance | BindingFlags.GetProperty, null, o, null );