大家帮小弟我看看这个代码有啥有关问题！Emit

public class TypeChange<Entity>    {       /// <summary>       /// 声明一个泛型委托       /// </summary>       /// <param name="Entity"></param>       /// <returns></returns>       private delegate SqlParameter[] Load(Entity Entity);           /// <summary>        /// 创建实体的委托对象        /// </summary>        private Load handler;        /// <summary>        /// 私有化构造方法        /// </summary>        private TypeChange() { }       public SqlParameter[] Builder(Entity entity)       {           return handler(entity);       }       public static TypeChange<Entity> TypeChanger()       {           TypeChange<Entity> changer = new TypeChange<Entity>();           DynamicMethod method = new DynamicMethod("DynamicChangeType", typeof(Entity), new Type[] { typeof(SqlParameter[]) }, typeof(Entity), true);           ILGenerator generator = method.GetILGenerator();           LocalBuilder result = generator.DeclareLocal(typeof(SqlParameter[]));            int count= typeof(Entity).GetProperties().Length;          SqlParameter[] sp=new  SqlParameter[count];           generator.Emit(OpCodes.Ldc_I4, count);           generator.Emit(OpCodes.Newarr, typeof(SqlParameter[]));           generator.Emit(OpCodes.Stloc, result);           for (int i = 0; i < count; i++)           {               PropertyInfo propertyInfo = typeof(Entity).GetProperties()[i];                             if (propertyInfo != null && propertyInfo.GetGetMethod() != null)               {                   //sp.set(i,new SqlParameter("@属性名",entity.getvalue()))                   generator.Emit(OpCodes.Ldloc,result);                   generator.Emit(OpCodes.Ldc_I4, i);                   generator.Emit(OpCodes.Ldloc_0);                   generator.Emit(OpCodes.Ldarg, "@"+propertyInfo.Name);                   generator.Emit(OpCodes.Ldarg_0);                   generator.Emit(OpCodes.Callvirt, propertyInfo.GetGetMethod());                   generator.Emit(OpCodes.Newobj, typeof(SqlParameter).GetConstructor(new Type[] { typeof(string), typeof(object) }));                   generator.Emit(OpCodes.Callvirt, typeof(SqlParameter[]).GetMethod("Set"));               }           }           generator.Emit(OpCodes.Ldloc, result);           generator.Emit(OpCodes.Ret);          return changer;       }    }