Get the value of an open static field through reflection

Question

This is what I have done so far:

var props = typeof (Settings.Lookup).GetFields(); Console.WriteLine(props[0].GetValue(Settings.Lookup)); // Compile error, Class Name is not valid at this point 

And this is my static class:

 public static class Settings { public static class Lookup { public static string F1 ="abc"; } } 

Answer 1

You need to pass null to GetValue , since this field does not belong to any instance:

 props[0].GetValue(null) 

Answer 2

You need to use Type.GetField overload (System.Reflection.BindingFlags):

• http://msdn.microsoft.com/en-us/library/4ek9c21e.aspx

For example:

 FieldInfo field = typeof(Settings.Lookup).GetField("Lookup", BindingFlags.Public | BindingFlags.Static); Settings.Lookup lookup = (Settings.Lookup)field.GetValue(null); 

Answer 3

Signature FieldInfo.GetValue

 public abstract Object GetValue( Object obj ) 

where obj is the instance of the object from which you want to get the value or null if it is a static class. So what this should do:

 var props = typeof (Settings.Lookup).GetFields(); Console.WriteLine(props[0].GetValue(null)); 

Answer 4

try it

 FieldInfo fieldInfo = typeof(Settings.Lookup).GetFields(BindingFlags.Static | BindingFlags.Public)[0]; object value = fieldInfo.GetValue(null); // value = "abc"