Use NameValueCollection Class in C#

The NameValueCollection sets more than one value for a single key. Now let us see how to use them in our C# program.

Set the collection −

static NameValueCollection GetCollection() {
   NameValueCollection myCollection = new NameValueCollection();
   myCollection.Add("Tim", "One");
   myCollection.Add("John", "Two");
   myCollection.Add("Jamie", "Three");
   return myCollection;
}

Now with the GetCollection() method use the “AllKeys” method property to display all the keys −

NameValueCollection myCollection = GetCollection();
foreach (string key in myCollection.AllKeys) {
   Console.WriteLine(key);
}