Get value of a public static field via reflection
C#.NetC# Problem Overview
This is what I've done so far:
var fields = typeof (Settings.Lookup).GetFields();
Console.WriteLine(fields[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";
}
}
C# Solutions
Solution 1 - C#
You need to pass null
to GetValue
, since this field doesn't belong to any instance:
fields[0].GetValue(null)
Solution 2 - C#
You need to use Type.GetField(System.Reflection.BindingFlags) overload:
For example:
FieldInfo field = typeof(Settings.Lookup).GetField("Lookup", BindingFlags.Public | BindingFlags.Static);
Settings.Lookup lookup = (Settings.Lookup)field.GetValue(null);
Solution 3 - C#
The signature of FieldInfo.GetValue
is
public abstract Object GetValue(
Object obj
)
where obj
is the object instance you want to retrieve the value from or null
if it's a static class. So this should do:
var props = typeof (Settings.Lookup).GetFields();
Console.WriteLine(props[0].GetValue(null));
Solution 4 - C#
Try this
FieldInfo fieldInfo = typeof(Settings.Lookup).GetFields(BindingFlags.Static | BindingFlags.Public)[0];
object value = fieldInfo.GetValue(null); // value = "abc"