Managed C++/CLI

1>.\STL_CLR.cpp(3) : fatal error C1083: Cannot open include file: 'cliext/vector': No such file or directory

#pragma once
using namespace System;

ref class Person
{
public:
	Person() : firstName(" "), secondName(" ") {}

	Person(String ^first, String^ second) : firstName(first), secondName(second) { }

	// Destructor
	~Person() { }

	virtual String^ ToString() override
	{
		return firstName + L" " + secondName;
	}

private:
	String^ firstName;
	String^ secondName;
};

#include "Person.h"
#include "stdafx.h"
#include 

using namespace System;
using namespace cliext;

int main(array<string> ^args)
{
	vector<person^>^ people = gcnew vector<person^>();
	String^ first;
	String^ second;
	Person^ person;

	while (true)
	{
		Console::WriteLine(L"Enter a first name or press Enter to end: ");
		first = Console::ReadLine();
		if (first->Length == 0)
			break;
		Console::WriteLine(L"Enter a second name: ");
		second = Console::ReadLine();
		person = gcnew Person(first->Trim(), second->Trim());
		people->push_back(person);
	}

	// Output the vec
	Console::WriteLine(L"\nThe persons in the vector are:");
	for each(Person^ person in people)
		Console::WriteLine("{0}", person);
	return 0;
}
</string>

private: System::Void pictureBox1_Click(System::Object^  sender, System::EventArgs^  e) {

			 // Change current Culture 
			 String ^loc;
			 loc = "de-DE";
			 wechsleSprache(loc);
		 }

private: System::Void wechsleSprache(String^ loc) {
			 
			/*The CurrentCulture property influences the display (or format) of date, 
			  currency, time, calendar etc. 
			  The CurrentUICulture value determines the resources that need to be 
			  loaded by the Resource Manager.
		     */
			
			 Thread::CurrentThread->CurrentUICulture = gcnew System::Globalization::CultureInfo(loc, false);
			 Thread::CurrentThread->CurrentCulture = Thread::CurrentThread->CurrentUICulture;
			 this->Controls->Clear();
			 InitializeComponent();
			 this->textboxCurrentUICulture->Text = System::Globalization::CultureInfo::CurrentUICulture->Name;			 			 }