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using System;
using System.Reflection;
using System.Reflection.Emit;
using System.Threading;
namespace ReflectionEmit
{
class ClassTestReflectionE
{
static void Main(string[] args)
{
AppDomain myDomain = Thread.GetDomain();
AssemblyName myAsmName = new AssemblyName();
myAsmName.Name = \"MyDynamicAssembly\";
// To generate a persistable assembly, specify AssemblyBuilderAccess.RunAndSave.
AssemblyBuilder myAsmBuilder = myDomain.DefineDynamicAssembly(myAsmName,
AssemblyBuilderAccess.RunAndSave);
// Generate a persistable single-module assembly.
ModuleBuilder myModBuilder =
myAsmBuilder.DefineDynamicModule(myAsmName.Name, myAsmName.Name + \".dll\");
TypeBuilder myTypeBuilder = myModBuilder.DefineType(\"CustomerData\",
TypeAttributes.Public);
FieldBuilder customerNameBldr = myTypeBuilder.DefineField(\"customerName\",
typeof(string),
FieldAttributes.Private);
// The last argument of DefineProperty is null, because the
// property has no parameters. (If you don\'t specify null, you must
// specify an array of Type objects. For a parameterless property,
// use an array with no elements: new Type[] {})
PropertyBuilder custNamePropBldr = myTypeBuilder.DefineProperty(\"CustomerName\",
PropertyAttributes.HasDefault,
typeof(string),
null);
// The property set and property get methods require a special
// set of attributes.
MethodAttributes getSetAttr =
MethodAttributes.Public | MethodAttributes.SpecialName |
MethodAttributes.HideBySig;
// Define the \"get\" accessor method for CustomerName.
MethodBuilder custNameGetPropMthdBldr =
myTypeBuilder.DefineMethod(\"get_CustomerName\",
getSetAttr,
typeof(string),
Type.EmptyTypes);
ILGenerator custNameGetIL = custNameGetPropMthdBldr.GetILGenerator();
custNameGetIL.Emit(OpCodes.Ldarg_0);
custNameGetIL.Emit(OpCodes.Ldfld, customerNameBldr);
custNameGetIL.Emit(OpCodes.Ret);
// Define the \"set\" accessor method for CustomerName.
MethodBuilder custNameSetPropMthdBldr =
myTypeBuilder.DefineMethod(\"set_CustomerName\",
getSetAttr,
null,
new Type[] { typeof(string) });
ILGenerator custNameSetIL = custNameSetPropMthdBldr.GetILGenerator();
custNameSetIL.Emit(OpCodes.Ldarg_0);
custNameSetIL.Emit(OpCodes.Ldarg_1);
custNameSetIL.Emit(OpCodes.Stfld, customerNameBldr);
custNameSetIL.Emit(OpCodes.Ret);
// Last, we must map the two methods created above to our PropertyBuilder to
// their corresponding behaviors, \"get\" and \"set\" respectively.
custNamePropBldr.SetGetMethod(custNameGetPropMthdBldr);
custNamePropBldr.SetSetMethod(custNameSetPropMthdBldr);
Type retval = myTypeBuilder.CreateType();
// Save the assembly so it can be examined with Ildasm.exe,
// or referenced by a test program.
myAsmBuilder.Save(myAsmName.Name + \".dll\");
}
}
} |
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