Add Two Numbers Without Using Addition Operator in Windows Store App

In this article I describe how to add two numbers without using the addition operator. Generally this type of question I have solved in the C language. But when I went for an interview this question was asked using the C# language. So here I have written this code.

Use the following procedure to create it.

Step 1

First of all you have to create a new Windows Store Application.

  • Open Visual Studio 2012
  • "File" -> "New" -> "Project..."
  • Choose "Template" -> "Visual C#" -> "Window Store app"
  • Choose "Blank App (XAML)" then rename the application


Step 2

Write the following XAML code in "Mainpage.Xaml" (that is available in Solution Explorer):










    <Grid Background="Red">


            <ColumnDefinition Width="233*"/>

            <ColumnDefinition Width="142*"/>

            <ColumnDefinition Width="204*"/>

            <ColumnDefinition Width="787*"/>



            <RowDefinition Height="78*"/>

            <RowDefinition Height="49*"/>

            <RowDefinition Height="43*"/>

            <RowDefinition Height="40*"/>

            <RowDefinition Height="38*"/>

            <RowDefinition Height="520*"/>


        <TextBlock Text="Sum of Two number without Using Addition Operator" Foreground="White" FontSize="20" FontWeight="ExtraBold" Grid.Column="2" Grid.Row="1" Grid.ColumnSpan="2"></TextBlock>

        <TextBlock Text="Enter Number1" Foreground="White" FontSize="15" FontWeight="ExtraBold" Grid.Column="1" Grid.Row="2"></TextBlock>

        <TextBox x:Name="textbox1" Grid.Column="2" Grid.Row="2" Width="200" HorizontalAlignment="Left" VerticalAlignment="Top" Height="32" ></TextBox>

        <TextBlock Text="Enter Number2" Foreground="White" FontSize="15" FontWeight="ExtraBold" Grid.Column="1" Grid.Row="3"></TextBlock>

        <Button x:Name="button1" Content="Click" Click="Button1_Click" Grid.Column="2" Grid.Row="4" HorizontalAlignment="Left" VerticalAlignment="Bottom" Background="Yellow" Foreground="Black" Width="120" Height="38" />

        <TextBox x:Name="textbox2" Grid.Column="2" Grid.Row="3" Width="200" HorizontalAlignment="Left" VerticalAlignment="Top" Height="32" ></TextBox>

        <TextBlock x:Name="text1" Foreground="White" FontSize="15" FontWeight="ExtraBold" Grid.Column="3" Grid.Row="3" Width="200" HorizontalAlignment="Left" ></TextBlock>





Step 3

Now write the following C# code for the button within "Mainpage.Xaml.cs".

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using Windows.Foundation;

using Windows.Foundation.Collections;

using Windows.UI.Xaml;

using Windows.UI.Xaml.Controls;

using Windows.UI.Xaml.Controls.Primitives;

using Windows.UI.Xaml.Data;

using Windows.UI.Xaml.Input;

using Windows.UI.Xaml.Media;

using Windows.UI.Xaml.Navigation;


namespace Power_app


    public sealed partial class MainPage : Page


        public MainPage()




        protected override void OnNavigatedTo(NavigationEventArgs e)



        private void Button1_Click(object sender, RoutedEventArgs e)


            int num1 = 0, num2 = 0;

            int sum = 0;

            num1 = Convert.ToInt32(textbox1.Text);

            num2  = Convert.ToInt32(textbox2.Text);                     

            sum = num1 - ~num2  - 1;

            text1.Text = sum.ToString();





Step 4

Run your app.