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    <p>Yes. You can. Actually, not just <code>std::string</code>, <code>std::wstring</code>, any standard C++ class or your own classes can be marshaled or instantiated and called from C#/.NET.</p> <p>The basic idea of instantiating a C++ object from .NET world is to allocate exact size of the C++ object from .NET, then call the constructor which is exported from the C++ DLL to initialize the object, then you will be able to call any of the functions to access that C++ object, if any of the method involves other C++ classes, you will need to wrap them in a C# class as well, for methods with primitive types, you can simply P/Invoke them. If you have only a few methods to call, it would be simple, manual coding won't take long. When you are done with the C++ object, you call the destructor method of the C++ object, which is a export function as well. if it does not have one, then you just need to free your memory from .NET.</p> <p>Here is an example.</p> <pre><code>public class SampleClass : IDisposable { [DllImport("YourDll.dll", EntryPoint="ConstructorOfYourClass", CharSet=CharSet.Ansi, CallingConvention=CallingConvention.ThisCall)] public extern static void SampleClassConstructor(IntPtr thisObject); [DllImport("YourDll.dll", EntryPoint="DoSomething", CharSet=CharSet.Ansi, CallingConvention=CallingConvention.ThisCall)] public extern static void DoSomething(IntPtr thisObject); [DllImport("YourDll.dll", EntryPoint="DoSomethingElse", CharSet=CharSet.Ansi, CallingConvention=CallingConvention.ThisCall)] public extern static void DoSomething(IntPtr thisObject, int x); IntPtr ptr; public SampleClass(int sizeOfYourCppClass) { this.ptr = Marshal.AllocHGlobal(sizeOfYourCppClass); SampleClassConstructor(this.ptr); } public void DoSomething() { DoSomething(this.ptr); } public void DoSomethingElse(int x) { DoSomethingElse(this.ptr, x); } public void Dispose() { Marshal.FreeHGlobal(this.ptr); } } </code></pre> <p>For the detail, please see the below link,</p> <p><a href="http://www.xinterop.com/index.php/2013/04/13/introduction-to-c-pinvoke-interop-sdk/" rel="nofollow">C#/.NET PInvoke Interop SDK</a></p> <p>(I am the author of the SDK tool)</p> <p>Once you have the C# wrapper class for your C++ class ready, it is easy to implement <code>ICustomMarshaler</code> so that you can marshal the C++ object from .NET.</p> <p><a href="http://msdn.microsoft.com/en-us/library/system.runtime.interopservices.icustommarshaler.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/system.runtime.interopservices.icustommarshaler.aspx</a></p>
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    1. POMarshal C++ "string" class in C# P/Invoke
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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