public static MemberIndex Create <returnType>(Expression <Func <T, returnType> > member)
{
int index = MemberMapType.GetMemberIndex(GetMemberName(member));
return(new MemberIndex(index >= 0 ? index : -1));
}
/// <summary>
/// 成员位图
/// </summary>
/// <param name="type">成员位图类型信息</param>
internal MemberMap(MemberMapType type)
{
Type = type;
}