Visual C++ .NET/Collections/NameValueCollection

Adding value to NameValueCollection by indexer

 
#include "stdafx.h"
#using <system.dll>
using namespace System;
using namespace System::Collections::Specialized;
void main()
{
    NameValueCollection^ nvCol = gcnew NameValueCollection();
    nvCol->Add(nullptr, "void");
    nvCol->Set("A", "a");
    nvCol->Add("B", "b1");
    nvCol->Add("B", "b2");
    nvCol->Add("B", "b3");
    nvCol->Add("C", "c1");
    nvCol->Add("C", "c2");
    nvCol->Add("C", "c3");
    array<String^>^ keys = nvCol->AllKeys;
    nvCol["F"] = "P";
}

Add to NameValueCollection

 
#include "stdafx.h"
#using <system.dll>
using namespace System;
using namespace System::Collections::Specialized;
void main()
{
    NameValueCollection^ nvCol = gcnew NameValueCollection();
    nvCol->Add(nullptr, "void");
    nvCol->Set("A", "a");
    nvCol->Add("B", "b1");
    nvCol->Add("B", "b2");
    nvCol->Add("B", "b3");
    nvCol->Add("C", "c1");
    nvCol->Add("C", "c2");
    nvCol->Add("C", "c3");
}

Get all keys from NameValueCollection

 
#include "stdafx.h"
#using <system.dll>
using namespace System;
using namespace System::Collections::Specialized;
void main()
{
    NameValueCollection^ nvCol = gcnew NameValueCollection();
    nvCol->Add(nullptr, "void");
    nvCol->Set("A", "a");
    nvCol->Add("B", "b1");
    nvCol->Add("B", "b2");
    nvCol->Add("B", "b3");
    nvCol->Add("C", "c1");
    nvCol->Add("C", "c2");
    nvCol->Add("C", "c3");
    array<String^>^ keys = nvCol->AllKeys;
    for (int i = 0; i < keys->Length; i++)
    {
        array<String^>^ vals = nvCol->GetValues(keys[i]);
        Console::WriteLine("{0}:\t\t{1}", keys[i], vals[0]);
        for (int j = 1; j < vals->Length; j++)
        {
            Console::WriteLine("\t\t{0}", vals[j]);
        }
    }
}

Get key and value from a NameValueCollection

 
#include "stdafx.h"
#using <system.dll>
using namespace System;
using namespace System::Collections::Specialized;
void main()
{
    NameValueCollection^ nvCol = gcnew NameValueCollection();
    nvCol->Add(nullptr, "void");
    nvCol->Set("A", "a");
    nvCol->Add("B", "b1");
    nvCol->Add("B", "b2");
    nvCol->Add("B", "b3");
    nvCol->Add("C", "c1");
    nvCol->Add("C", "c2");
    nvCol->Add("C", "c3");
    array<String^>^ keys = nvCol->AllKeys;

    Console::WriteLine("Key @[1]:\t{0}", nvCol->GetKey(1));
    Console::WriteLine("Values @[3]:\t{0}", nvCol[3]);
}

Get values by key in NameValueCollection

 
#include "stdafx.h"
#using <system.dll>
using namespace System;
using namespace System::Collections::Specialized;
void main()
{
    NameValueCollection^ nvCol = gcnew NameValueCollection();
    nvCol->Add(nullptr, "void");
    nvCol->Set("A", "a");
    nvCol->Add("B", "b1");
    nvCol->Add("B", "b2");
    nvCol->Add("B", "b3");
    nvCol->Add("C", "c1");
    nvCol->Add("C", "c2");
    nvCol->Add("C", "c3");
    array<String^>^ keys = nvCol->AllKeys;
    for (int i = 0; i < keys->Length; i++)
    {
        array<String^>^ vals = nvCol->GetValues(keys[i]);
        Console::WriteLine("{0}:\t\t{1}", keys[i], vals[0]);
        for (int j = 1; j < vals->Length; j++)
        {
            Console::WriteLine("\t\t{0}", vals[j]);
        }
    }
}

Remove by key

 
#include "stdafx.h"
#using <system.dll>
using namespace System;
using namespace System::Collections::Specialized;
void main()
{
    NameValueCollection^ nvCol = gcnew NameValueCollection();
    nvCol->Add(nullptr, "void");
    nvCol->Set("A", "a");
    nvCol->Add("B", "b1");
    nvCol->Add("B", "b2");
    nvCol->Add("B", "b3");
    nvCol->Add("C", "c1");
    nvCol->Add("C", "c2");
    nvCol->Add("C", "c3");
    array<String^>^ keys = nvCol->AllKeys;
    nvCol->Remove(nullptr);
}