If you provide example code we can probably point out what's missing/needs-
correction. I don't know off hand how you can write a valid assembly to
disk without being able to read types with Reflector/ILDASM.
Here's the most simple case of dynamnically creating an assembly:
AssemblyName assemblyName = new AssemblyName("dynamicAssembly");
AssemblyBuilder assemblyBuilder =
AppDomain.CurrentDomain.DefineDynamicAssembly(assemblyName,
AssemblyBuilderAccess.Save);
ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule
(assemblyName.Name, assemblyName.Name + ".dll");
TypeBuilder typeBuilder = moduleBuilder.DefineType("MyType",
TypeAttributes.Public);
typeBuilder.CreateType();
assemblyBuilder.Save(Path.GetFileName
(moduleBuilder.FullyQualifiedName));
...which loads fine in Reflector.
For a property with a getter and a setter, the following between the call
to DefineType and CreateType has worked for me:
// define a field for the property
FieldBuilder fieldBuilder = typeBuilder.DefineField("value",
typeof (int), FieldAttributes.Private);
// define the property
PropertyBuilder propertyBuilder = typeBuilder.DefineProperty
("Value", PropertyAttributes.HasDefault, typeof (int), null);
// define the property getter
MethodBuilder methodBuilder = typeBuilder.DefineMethod("get_Value",
MethodAttributes.Public | MethodAttributes.SpecialName |
MethodAttributes.HideBySig,
typeof
(int),
Type.EmptyTypes);
// emit the body of the getter
ILGenerator ilGenerator = methodBuilder.GetILGenerator();
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Ldfld, fieldBuilder);
ilGenerator.Emit(OpCodes.Ret);
// attach the getter to the property
propertyBuilder.SetGetMethod(methodBuilder);
// define the property setter
methodBuilder = typeBuilder.DefineMethod("set_Value",
MethodAttributes.Public |
MethodAttributes.SpecialName |
MethodAttributes.HideBySig,
null,
new Type[] {typeof
(int)});
// emit the body of the setter
ilGenerator = methodBuilder.GetILGenerator();
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Ldarg_1);
ilGenerator.Emit(OpCodes.Stfld, fieldBuilder);
ilGenerator.Emit(OpCodes.Ret);
// attach the setter to the property
propertyBuilder.SetSetMethod(methodBuilder);
Documentation in-and-around http://msdn.microsoft.com/en-
us/library/4xtysk39.aspx usually has enough info for what I'm usually
doing.
For example: http://msdn.microsoft.com/en-
us/library/system.reflection.emit.assemblybuilder.aspx
Cheers -- Peter
On Thu, 17 Jul 2008 09:21:03 -0500, Mike Andrews
<[EMAIL PROTECTED]> wrote:
>I'm needing to do some dynamic code generation.
>I've been reading up on the Reflection.Emit namespace but I'm having some
>issues.
>When I compile a dynamic assembly and then save to disk, I can't read the
>types from it in Reflector or ILDASM.
>
>Do any of you have any good tutorials or sample code I might examine?
>
>I mainly want to create a dynamic class with read/write properties.
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