首先我们为项目添加引用CountryLib . dll，然后重新编译控制台应用程序CountryTest。

First add to the project the reference to CountryLib.dll and rebuild the console application, CountryTest.

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然后运行相同的客户端，先不要重新编译。

Then you run the same client, without recompiling it first.

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然后运行相同的客户端，先不要重新编译。

Then you run the same client, without recompiling it first.

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