convert list to char** in vc++

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C#

char **details;
    list->Add(gcnew String("Test String 1"));
    list->Add(gcnew String("Test String 2"));
    list->Add(gcnew String("Test String 3"));

    String^ filterTxt = "two";

    for(int i=0;i<3; i++)
    {
        details[i]=(char*)(void*)Marshal::StringToHGlobalAnsi(list[i]);
        Console::WriteLine(details[i]);
    }
    Console::ReadLine();

The above code getting the null reference exception, please help me on this.

Posted 11-Dec-13 0:00am

Member 10283916

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OriginalGriff · Accepted Answer · 2013-12-11T00:07:00

Well, perhaps, if you assigned some actual memory to details the error would go away?

You declared it as a pointer-to-pointer-to char:

C++

char **details;

And the next thing you do with it is try to fill it up:

C++

details[i]=(char*)(void*)Marshal::StringToHGlobalAnsi(list[i]);

At no point do you actually point it at anything...