I am struggling with obtaining the "object" to be able to set a value on a nested class, and I suspect that I am going to struggle with how to manipulate it after it is set. Example follows:
public class RegistryData {
public RegistryKey rk;
}
public static class RegistryKeys {
public static class Username {
public static RegistryData Data = null;
public static string DefaultValue = "MyUsername";
}
public static class Password {
public static RegistryData Data = null;
public static string DefaultValue = "MyPassword";
}
}
The following code uses reflection to obtain the Data field, however I can not see how to obtain the "object" to pass into FieldInfo.SetValue().
static void DoReflection()
{
Type type = typeof(RegistryKeys);
Type[] nestedTypeArray = type.GetNestedTypes(BindingFlags.Public | BindingFlags.Static);
foreach(Type t in nestedTypeArray)
{
FieldInfo field = t.GetField("Data"); // Obtain the Data field
// Issue 1: how to allocate the Data Field within the nested class
field.SetValue( ??? object ??? , new RegistryData()); <---
// Issue 2: how to access the new class within the nested class
field.GetValue( ??? what ??? ).rk = Registry.LocalMachine;
}
}
Thanks.
OK, turns out that with a little more research (asking the question slightly differently in Google) and I have found the answer:
field.SetValue( null , new RegistryData());
((RegistryData)(field.GetValue(null))).rk = Registry.LocalMachine;
According to the answer here: Is it possible to set this static private member of a static class with reflection?
It states in the code section:
// Normally the first argument to "SetValue" is the instance
// of the type but since we are mutating a static field we pass "null"
I am not going to suggest that I understand that. But the code is working! Rather than just delete this question I will post the answer here for others as I did struggle to find answer.
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