如何将 System::String^ 转换为 const char*? [英] How do I convert a System::String^ to const char*?

问题描述

我正在用 C++/CLI 开发一个应用程序，并有一个非托管代码的 csv 文件写入库，我想从托管部分使用它.所以我的函数看起来像这样:

I'm developing an app in C++/CLI and have a csv file writing library in unmanaged code that I want to use from the managed portion. So my function looks something like this:

bool CSVWriter::Write(const char* stringToWrite);

...但我真的很难将闪亮的 System::String^ 转换为兼容的东西.基本上我希望通过以下方式打电话:

...but I'm really struggling to convert my shiny System::String^ into something compatible. Basically I was hoping to call by doing something like:

if( m_myWriter->Write(String::Format("{0}",someValueIWantToSave)) )
{
    // report success
}

推荐答案

using namespace System::Runtime::InteropServices;
const char* str = (const char*) (Marshal::StringToHGlobalAnsi(managedString)).ToPointer();

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