Check out example codes for "how to create dictionary of list in c#". It will help you in understanding the concepts better.

Code Example 1

public static void Main()
            Dictionary<String, List<string>> dic = new Dictionary<string, List<string>>();

            List<string> li1 = new List<string>();
            li1.Add("text1"); li1.Add("text2"); li1.Add("text3"); li1.Add("text4");

            List<string> li2 = new List<string>();
            li2.Add("text1"); li2.Add("text2"); li2.Add("text3"); li2.Add("text4");

            dic["1"] = li1;
            dic["2"] = li2;

            foreach (string key in dic.Keys)
                foreach (string val in dic[key])

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