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user23328595
Asked:2024-04-06 21:50:48 +0000 UTC2024-04-06 21:50:48 +0000 UTC

如何将 std::string 转换为 System::string

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std::map<int, std::string> DayWeek;
DayWeek[0] = "Суббота";
DayWeek[1] = "Воскресенье";
DayWeek[2] = "Понедельник";
DayWeek[3] = "Вторник";
DayWeek[4] = "Среда";
DayWeek[5] = "Четверг";
DayWeek[6] = "Пятница"; 

label_day->Text=Convert::ToString(DayWeek[Day]);

我需要输出字典的值，但是 Convert 没有重载，我尝试通过循环转换为字符数组 - 它不起作用c_str- 它输出 True，而不是字典的值，我会很感谢您的帮助。

c++

1 个回答

  1. Best Answer

    这样就可以了：

    label_day->Text = gcnew String(DayWeek[Day].c_ctr());

    但有人怀疑在一般情况下它更正确

    std::string &day = DayWeek[Day];
label_day->Text = gcnew String(day.c_ctr(), 0, day.length());

    虽然一般来说使用它会更合乎逻辑

    std::map<int, const char *> DayWeek;

label_day->Text = gcnew String(DayWeek[Day]);
    • 1

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