CODEWITHSUNDEEP
c#reflection.emit
toddmo
toddmo

Reputation: 22406

The invoked member is not supported in a dynamic module

I get the error when I run this code:

  var asmName = new AssemblyName("DynamicAssembly");
  var asmBuilder = AssemblyBuilder.DefineDynamicAssembly
      (asmName, AssemblyBuilderAccess.Run);
  var moduleBuilder = asmBuilder.DefineDynamicModule("DynamicModule");
  var typeBuilder = moduleBuilder.DefineType("DynamicType", TypeAttributes.Public);
  var methodBuilder = typeBuilder.DefineMethod("DynamicMethod", MethodAttributes.Static, typeof(double), new[] { typeof(double), typeof(double), typeof(double) });
  myexp.Lambda.CompileToMethod(methodBuilder);
  asmBuilder.SetEntryPoint(methodBuilder);

  MethodInfo barMethod = asmBuilder.EntryPoint;
  result = barMethod.Invoke(null, new object[] { 50d, 1d, 3d });

I get the error on the last line

The invoked member is not supported in a dynamic module.

I just want to call the method.

I added 

  <runtime>
    <loadFromRemoteSources enabled="true"/>
  </runtime>

to my app.config to no avail.

Upvotes: 2

Views: 2758

Answers (1)

Andrey Tretyak
Andrey Tretyak

Reputation: 3221

As @thehennyy pointed out in comment you should call typeBuilder.CreateType() before invoking method, but calling Invoke from methodBuilder cause same error.

I've managed to call method after getting it from created type like this:

var type = typeBuilder.CreateType();
var method = type.GetMethod(methodName, BindingFlags.Static | BindingFlags.NonPublic);

Here is complete code that I've used:

Expression<Func<double, double, double, double>> myexp = (a, b, c) => a * b * c;
var methodName = "DynamicMethod";

var asmName = new AssemblyName("DynamicAssembly");
var asmBuilder = AssemblyBuilder.DefineDynamicAssembly(asmName, AssemblyBuilderAccess.Run);
var moduleBuilder = asmBuilder.DefineDynamicModule("DynamicModule");
var typeBuilder = moduleBuilder.DefineType("DynamicType", TypeAttributes.Public);
var methodBuilder = typeBuilder.DefineMethod(methodName, MethodAttributes.Static, typeof(double), new[] { typeof(double), typeof(double), typeof(double) });

myexp.CompileToMethod(methodBuilder);
var type = typeBuilder.CreateType();
var method = type.GetMethod(methodName, BindingFlags.Static | BindingFlags.NonPublic);

asmBuilder.SetEntryPoint(method);
MethodInfo barMethod = asmBuilder.EntryPoint;
var result = barMethod.Invoke(null, new object[] { 50d, 1d, 3d });

Upvotes: 4

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