dnlib fails to resolve types according to framework version about dnlib HOT 12 CLOSED

using System;
public class TestA {
    public static void Test(Action act) {
        act();
    }
}

using System;
public class TestB {
    public static void Main() {
        TestA.Test(() => Console.WriteLine("OK"));
    }
}

using System;
using System.Diagnostics;
using dnlib;
using dnlib.DotNet;

class Program {
    static void Main(string[] args) {
        var module = ModuleDefMD.Load(@"SampleB.exe");
        var type = module.Find("TestB", true);
        var method = type.FindMethod("Main");
        foreach (var instr in method.Body.Instructions) {
            if (instr.Operand is IMethod && ((IMethod)instr.Operand).Name == "Test") {
                var methodRef = (IMethod)instr.Operand;
                var methodDef = methodRef.ResolveMethodDef();
                Debug.Assert(methodDef != null);
            }
        }
    }
}

        var resolver = new AssemblyResolver();
        resolver.PreSearchPaths.Clear();
        resolver.PreSearchPaths.Add(@"C:\Windows\Microsoft.NET\Framework\v4.0.30319\");
        resolver.FindExactMatch = false;
        var moduleCtx = ModuleDefMD.CreateModuleContext(false);
        moduleCtx.AssemblyResolver = resolver;

        var module = ModuleDefMD.Load(@"SampleB.exe", moduleCtx);

        static unsafe void frRedirV2() {
            // .NET 3.5, x86
            var clrBase = (byte*)Process.GetCurrentProcess().Modules.OfType<ProcessModule>().Single(m => m.ModuleName == "mscorwks.dll").BaseAddress;
            IntPtr* fXPolicy = (IntPtr*)(clrBase + 0xB98A0);                  // g_arFxPolicy

            var frRedirs = new List<Tuple<string, string, string>>();

            while (((uint)fXPolicy[0] & 0xff000000) == ((uint)fXPolicy[1] & 0xff000000)) {
                var frName = Marshal.PtrToStringUni(fXPolicy[0]);
                var frKey = Marshal.PtrToStringUni(fXPolicy[1]);
                var frVer = Marshal.PtrToStringUni(fXPolicy[2]);
                frRedirs.Add(Tuple.Create(frName, frKey, frVer));
                fXPolicy += 3;
            }
            var list = string.Join(Environment.NewLine, frRedirs.Select(redir => redir.ToString()).ToArray());
        }

        static unsafe void frRedirV4() {
            // .NET 4.5, x86
            var clrBase =
                (byte*)Process.GetCurrentProcess().Modules.OfType<ProcessModule>().Single(m => m.ModuleName == "clr.dll").BaseAddress;
            byte* fXPolicy = clrBase + 0x54380;                  // g_arFxPolicy
            IntPtr* partStrs = (IntPtr*)(clrBase + 0x54850);     // g_rgAssemblyNamePartStrings
            IntPtr* kVerStrs = (IntPtr*)(clrBase + 0x553D4);     // g_rgAssemblyKeyVersionStrings

            var frRedirs = new List<Tuple<string, string, string, bool>>();

            while (fXPolicy[5] != 0) {
                var frName = new StringBuilder();
                for (int i = 0; i < 4; i++) {
                    if (fXPolicy[i] != 0)
                        frName.Append(Marshal.PtrToStringAnsi(partStrs[fXPolicy[i]]) + ".");
                    else
                        break;
                }
                var frKey = Marshal.PtrToStringUni(kVerStrs[fXPolicy[4]]);
                var frVer = Marshal.PtrToStringUni(kVerStrs[fXPolicy[5] & 0x7f]);
                var flag = (fXPolicy[5] >> 7) != 0;
                frRedirs.Add(Tuple.Create(frName.ToString().Trim('.'), frKey, frVer, flag));
                fXPolicy += 6;
            }
            var list = string.Join(Environment.NewLine, frRedirs);
        }