Dynamic size C# Dictionary List

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Hi, i am new for programming in C# and i need a help to create a Dictionary list to store some string data. see the following example

row1-> "cat","dog","rat"
row2-> "bus"
row3-> "sunday","monday","tuesday","friday"

like that with different number of column.
please tell me how to create an object of dictionary and store data as above and how to read it also . thanks.

Posted 6-Jun-13 1:23am

Tharindu Prabash

Updated 6-Jun-13 1:33am

Ron Beyer

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Sergey Alexandrovich Kryukov 6-Jun-13 7:43am

An example is not a definition of a problem. When you formally define a problem, maybe if would make a decision closer.

Do you want to store all this data in memory, or somewhere else, for example in the database, in a file? What operations are required? What operations need to be optimized for performance?

And start with the goal of it all.

—SA

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StM0n · Accepted Answer · 2013-06-06T01:40:00

Do you mean something like that?!

C#

var myList = new Dictionary<String, List<String>>();

myList.Add("row1", new List<String>());
myList.Add("row2", new List<String>());
myList.Add("row3", new List<String>());

myList["row1"].Add("cat");
myList["row1"].Add("dog");
myList["row1"].Add("rat");		

myList["row2"].Add("bus");		

myList["row3"].Add("sunday");
myList["row3"].Add("monday");
myList["row3"].Add("tuesday");
myList["row3"].Add("friday");

Console.WriteLine("Number of rows -> " + myList.Count);

foreach(var row in myList) {
    Console.WriteLine("Number of columns in " + row.Key + " -> " + row.Value.Count);
}

[edit]fleshing out solution[/edit]

CPallini · Accepted Answer · 2013-06-06T01:58:00

You don't need a Dictionary: just use a List < List < string > >. e.g.

C#

List<List<string>> m = new List<List<string>>();
m.Add(new List<string>());
m.Add(new List<string>());
m.Add(new List<string>());
m[0].AddRange( new string[] {"cat", "dog", "rat"});
m[1].Add("bus");
m[2].AddRange(new string[] { "sunday", "monday", "tuesday", "friday" });
foreach (var row in m)
{
  foreach (var s in row)
    Console.Write("{0} ", s);
  Console.WriteLine();
}

Dynamic size C# Dictionary List

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