# Determine Sum of Digits of an Entered Number in Windows Store App

In this article I explain how to separate each digit of a number and then add each digit and show the sum of each digit. So I will first seperate each digit, then add them.

Use the following procedure to do that.

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"
• "Blank App (XAML)", then rename the application

Step 2

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

<Page

x:Class="sum_of_each_digit_entered_number.MainPage"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:local="using:sum_of_each_digit_entered_number"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

mc:Ignorable="d">

<Grid Background="Red">

<Grid.ColumnDefinitions>

<ColumnDefinition Width="461*"/>

<ColumnDefinition Width="905*"/>

</Grid.ColumnDefinitions>

<Grid.RowDefinitions>

<RowDefinition Height="122*"/>

<RowDefinition Height="39*"/>

<RowDefinition Height="33*"/>

<RowDefinition Height="37*"/>

<RowDefinition Height="537*"/>

</Grid.RowDefinitions>

<TextBlock Text="Sum of Each Digit of Entered Number" FontSize="20" FontFamily="Arial" FontWeight="ExtraBold" Foreground="White" Grid.Column="1" Grid.Row="1"/>

<TextBlock Text="Enter number" FontSize="20" FontFamily="Arial" FontWeight="ExtraBold" Foreground="White" Grid.Column="0" Grid.Row="2" TextAlignment="Right"></TextBlock>

<TextBox x:Name="textbox1" Grid.Column="1" Grid.Row="2" Width="140" Height="32" HorizontalAlignment="Left" VerticalAlignment="Top" />

<Button x:Name="button1" Content="Click" Click="button1_Click" Grid.Column="1" Grid.Row="3" Background="Yellow" Foreground="Black" Width="118" Height="38" VerticalAlignment="Top" Grid.RowSpan="2" />

<TextBlock x:Name="text1" Grid.Column="1" Grid.Row="4" TextWrapping="Wrap" Width="219"  HorizontalAlignment="Left" Margin="0,6,0,497" FontSize="15" FontWeight="ExtraBold" />

</Grid>

</Page>

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 sum_of_each_digit_entered_number

{

public sealed partial class MainPage : Page

{

public MainPage()

{

this.InitializeComponent();

}

protected override void OnNavigatedTo(NavigationEventArgs e)

{

}

private void button1_Click(object sender, RoutedEventArgs e)

{

int num=0, r, sum = 0;

num = Convert.ToInt32(textbox1.Text);

while (num > 0)

{

r = num % 10;

num = num / 10;

sum = sum + r;

}

text1.Text = sum.ToString();

}

}

}

Step 4

Now Run your app.