VB中给UInt32,UShort以16进制方式赋值编译不通过

在VB中输入下列代码，编译不能通过

        Dim nUINT32 As UInt32        Dim nINT32 As Int32        Dim nUSHORT16 As UShort        Dim nSHORT16 As Short        nUINT32 = &H80000000        nINT32 = &H80000000        nUSHORT16 = &H8000        nSHORT16 = &H8000

解决方法就是在赋值处加上后缀，如下所示

        nUINT32 = &H80000000UI        nINT32 = &H80000000I        nUSHORT16 = &H8000US        nSHORT16 = &H8000S