using System;

using System.Collections.Generic;

​

var doLoopIteration = 0;

​

do

{

    Console.WriteLine("Iteration: {0}", doLoopIteration++);

} while(doLoopIteration < 10);

​

Console.WriteLine();

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var whileLoopIteration = 0;

​

while (whileLoopIteration < 10)

{

    Console.WriteLine("Iteration: {0}", whileLoopIteration++);

}

​

Console.WriteLine();

​

for (var x = 0; x < 10; x++)

{

    Console.WriteLine("Iteration (x): {0}", x);

}

​

var doctors = new List<string> { "Eccleston", "Tennant", "Smith", "Capaldi" };

foreach(var d in doctors)

{

    Console.WriteLine(d);

}

​

for(var d = 0; d < doctors.Count; d++)

{

    Console.WriteLine(doctors[d]);

}

​

​

var dict = new Dictionary<string, int>

{

    { "Item1", 1 },

    { "Item2", 2 },

    { "Item3", 3 }  

};

​

foreach(var d in dict)

{

    Console.WriteLine("{0} - {1}", d.Key, d.Value);

}

​

var enumerator = doctors.GetEnumerator();

while(enumerator.MoveNext())

{

    var item = enumerator.Current;

    Console.WriteLine(item.GetType().Name);

}

​

​

​

​

​