我正在尝试使用 GeoCoordinate 旨在由 .Net Framework 4.5 支持.我正在使用 winodws 8 并且我有 .Net Framework 4.5，但我不断收到 The type or namespace name 'Device' does not exist in the namespace'System' 错误.
I am trying to work with GeoCoordinate which is meant to be supported by .Net Framework 4.5. I am working on winodws 8 and I have .Net Framework 4.5, but I keep getting The type or namespace name 'Device' does not exist in the namespace 'System' error.
有什么办法吗?
推荐答案
找不到类型或命名空间名称XXX"...
The type or namespace name 'XXX' could not be found...
请记住，如果您收到此错误，则有三种可能性.
Always bear in mind, if you get this error there are three possibilities.
您错过了 using 指令.
您错过了大会参考
您有使用指令"和程序集引用"，但当前项目的目标框架版本低于引用的程序集目标框架版本.
以上三个步骤几乎所有情况都应该解决问题.
Almost all the cases above three steps should solve the problem.
