C++ 'System' : 具有此名称的命名空间不存在
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'System' : a namespace with this name does not exist
提问by Narendra
I had a C++ project which was running perfectly. Now I copied the project to another folder and added the project to a WPF application solution.
我有一个运行完美的 C++ 项目。现在我将项目复制到另一个文件夹并将项目添加到 WPF 应用程序解决方案。
Now the C++ project is giving me lot of build errors. One of them is "System' : a namespace with this name does not exist".
现在 C++ 项目给了我很多构建错误。其中之一是"System' : a namespace with this name does not exist"。
Below are the lines which creates this error.
以下是产生此错误的行。
#include "stdafx.h"
using namespace System;
using namespace System::Reflection;
using namespace System::Runtime::CompilerServices;
using namespace System::Runtime::InteropServices;
using namespace System::Security::Permissions;
The above lines are in AssemblyInfo.cppfile. I don't have any experience of C++, so finding it difficult to remove the errors. Any help is appreciated. Below is another error which might be helpful for you to resolve the issue.
以上几行在AssemblyInfo.cpp文件中。我没有任何 C++ 经验，因此发现很难消除错误。任何帮助表示赞赏。下面是另一个错误，可能有助于您解决问题。
managed targeted code requires a '/clr' option
Thanks in advance.
提前致谢。
回答by Mif
Set Common Language RunTime Support to be "Common Language RunTime Support (/clr)" in 2places in your project properties :
在项目属性的2 个地方将公共语言运行时支持设置为“公共语言运行时支持 (/clr)” ：
Configuration Properties -> General
配置属性 -> 常规
Configuration Properties -> C/C++ -> General
配置属性 -> C/C++ -> 常规
