How do I use Reflection to get the fields of a method?

How can I user reflection to get the fields inside a method? I tried to use the MethodInfo and then GetFields but the values returned are not the fields I defined within the method.

For example, using the code below, how would I get the FieldInfo for LineNo?

    private void MyMethod()
    {
        int LineNo = 0;
    }

Thanks