Tuple Class in C#

Introduction

This article demonstrates different scenarios of using Tuple Class in C#. This was quite new to me which I practiced recently.

 

I was developing a demo application which was supposed to return multiple list Items. To bind each ListItems to respected ComboBox  I have to use 2 separate methods as one method had only one return type. To compress my code I then used Tuple Class.

 

See the below example where the 2nd one was the application I was developing.

 

Description

 

It is included in .NET 4.0+'s Tuple

 

Example-1(Add and Multiply 2 value)

static void Main(string[] args)
{
    int a = 10;
    int b = 20;
    var result = Add_Multiply(a, b);
    Console.WriteLine(result.Item1);
    Console.WriteLine(result.Item2);
}
private static Tuple<int, int> Add_Multiply(int a, int b)
{
    var tuple = new Tuple<int, int>(a + b, a * b);
    return tuple;
}

Example-2 (Return List of data in Item wise)

 

Here I am reading data from a text file which contains country name and country code and want to bind the names and code in a ComboBox. Here is the below code

public static Tuple<List<string>, List<string>> GetAllData()
{
    List<string> CountryName = new List<string>();
    List<string> CountryCode = new List<string>();
    using (var sr = new StreamReader(@"Country.txt")) //using System.IO; //Text file in bin/Debug folder of application
    {
        string line;
        while ((line = sr.ReadLine()) != null)
        {
            int index = line.LastIndexOf(" ");
            CountryName.Add(line.Substring(0, index));
            CountryCode.Add(line.Substring(index + 1));
        }
    }
    return new Tuple<List<string>, List<string>>(CountryName,CountryCode);
}

 To bind data in ComboBox

ddlCountryName.ItemsSource = Helper.GetAllData().Item1; //Helper is the class where GetAllData() is written
ddlCountryCode.ItemsSource = Helper.GetAllData().Item2;

Note

1.  You can find the attached sample solution for reference which is developed in WPF.
2. I hope you will love to use Tuple class.
   

Happy coding :) ;)