Reflaction很嚣张的功能

这几天在看《Visual.Basic.dot.NET.Business.Objects》一书，里面有几招挺牛的，记录下来。

1、即使一个类的contructor是private的，也可以用以下方法构造之：

　　Activator.CreateInstance(GetType(Customer), True)

2、用Reflection调用一个对象的方法也是一个很嚣张的功能

     #Region " Calling a method "

       Private Function GetMethod(ByVal ObjectType As Type, _
                                  ByVal Method As String) As MethodInfo

         Return ObjectType.GetMethod(Method, BindingFlags.FlattenHierarchy Or _
                                             BindingFlags.Instance Or _
                                             BindingFlags.Public Or _
                                             BindingFlags.NonPublic)
       End Function

     #End Region

     Private Function CallMethod(ByVal obj As Object, _
                                 ByVal method As String, _
                                 ByVal ParamArray params() As Object) As Object

       ' Call a private method on the object
       Dim info As MethodInfo = GetMethod(obj.GetType, method)
       Dim result As Object
       Try
         result = info.Invoke(obj, params)
       Catch e As Exception
         Throw e.GetBaseException
       End Try

       Return result

     End Function