How to get a Static property with Reflection

Question

So this seems pretty basic but I can't get it to work. I have an Object, and I am using reflection to get to it's public properties. One of these properties is static and I'm having no luck getting to it.

Public Function GetProp(ByRef obj As Object, ByVal propName as String) as PropertyInfo
    Return obj.GetType.GetProperty(propName)

End Function

The above code works fine for Public Instance properties, which up until now is all that I have needed. Supposedly I can use BindingFlags to request other types of properties (private, static), but I can't seem to find the right combination.

Public Function GetProp(ByRef obj As Object, ByVal propName as String) as PropertyInfo
    Return obj.GetType.GetProperty(propName, Reflection.BindingFlags.Static Or Reflection.BindingFlags.Instance Or Reflection.BindingFlags.Public)

End Function

But still, requesting any Static members return nothing. .NET reflector can see the static properties just fine, so clearly I am missing something here.

Answer 1

This is C#, but should give you the idea:

public static void Main() {
    typeof(Program).GetProperty("GetMe", BindingFlags.NonPublic | BindingFlags.Static);
}

private static int GetMe {
    get { return 0; }
}

(you need to OR NonPublic and Static only)

Answer 2

Try this C# Reflection link.

Note I think that BindingFlags.Instance and BindingFlags.Static are exclusive.

Answer 3

The below seems to work for me.

using System;
using System.Reflection;

public class ReflectStatic
{
    private static int SomeNumber {get; set;}
    public static object SomeReference {get; set;}
    static ReflectStatic()
    {
     SomeReference = new object();
     Console.WriteLine(SomeReference.GetHashCode());
    }
}

public class Program
{
    public static void Main()
    {
     var rs = new ReflectStatic();
     var pi = rs.GetType().GetProperty("SomeReference",  BindingFlags.Static | BindingFlags.Public);
     if(pi == null) { Console.WriteLine("Null!"); Environment.Exit(0);}
     Console.WriteLine(pi.GetValue(rs, null).GetHashCode());


    }
}

Answer 4

Ok so the key for me was to use the .FlattenHierarchy BindingFlag. I don't really know why I just added it on a hunch and it started working. So the final solution that allows me to get Public Instance or Static Properties is:

obj.GetType.GetProperty(propName, Reflection.BindingFlags.Public _
  Or Reflection.BindingFlags.Static Or Reflection.BindingFlags.Instance Or _
  Reflection.BindingFlags.FlattenHierarchy)

Answer 5

Or just look at this...

Type type = typeof(MyClass); // MyClass is static class with static properties
foreach (var p in type.GetProperties())
{
   var v = p.GetValue(null, null); // static classes cannot be instanced, so use null...
}