Introduction

In this article we will make an application for a Color picker editor. It is like a sub-set of a paints application. In a color picker application, we can get the color according to our choice. This application contains a color box, where a set of colors is available for picking the color and the second part is the editor.

Here we will take a frame as an object for using the color picker application. From the color box we can pick the color; just click on the color as our choice.

Step 1 : First, you will create a new Metro Style Application. Let us see the description with images of how you will create it.

  • Open Visual Studio 2011
  • File -> New -> Project
  • Choose Template -> Visual C# ->Metro Style Application
  • Rename the application

img1.gif

Step 2 : In the Solution Explorer there are two files that we will primarily work with; the BlankPage.xaml and BlankPage.xaml.cs files.

img2.gif

Step 3 : The BlankPage.xaml file is as in the following code:

Code :

<Page

x:Class="Application4.BlankPage"

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

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

xmlns:local="using:Application4"

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

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

mc:Ignorable="d">

<Grid x:Name="LayoutRoot">

<Grid.RowDefinitions>

<RowDefinition Height="0.010*"/>

<RowDefinition Height="0.081*"/>

<RowDefinition Height="0.058*"/>

</Grid.RowDefinitions>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="0.050*"/>

<ColumnDefinition Width="0.333*"/>

</Grid.ColumnDefinitions>

<Grid.Background>

<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="BlueViolet" Offset="1"/>

<GradientStop Color="Chocolate"/>

</LinearGradientBrush>

</Grid.Background>

<StackPanel Grid.Row="1" Grid.Column="0">

<Button x:Name="RedB" Background="Red" Height="50" Width="50" Click="RedB_Click_1">

</Button>

<Button x:Name="GreenB" Background="Green" Height="50" Width="50" Click="GreenB_Click_1">

</Button>

<Button x:Name="YelloB" Background="Yellow" Height="50" Width="50" Click="YelloB_Click_1">

</Button>

<Button x:Name="BlueB" Background="Blue" Height="50" Width="50" Click="BlueB_Click_1">

</Button>

</StackPanel>

<Grid Grid.Column="1" Grid.Row="1" HorizontalAlignment="Left">

<Frame x:Name="Frame1" Height="400" Width="400" Background="White"></Frame>

</Grid>

<TextBlock Grid.Row="0" Grid.Column="0" Text="Color Box" FontSize="20" Foreground="White">

</TextBlock>

<TextBlock Grid.Row="0" Grid.Column="1" Text="Color Picker Editor" FontSize="20" Foreground="White">

</TextBlock>

</Grid>

</Page>


Step 4 : The BlankPage.xaml.cs file is as in the following code:

Code :

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 Application4

{

public sealed partial class BlankPage : Page

{

public BlankPage()

{

this.InitializeComponent();

}

protected override void OnNavigatedTo(NavigationEventArgs e)

{

}

private void RedB_Click_1(object sender, RoutedEventArgs e)

{

Frame1.Background = new SolidColorBrush(Windows.UI.Colors.Red);

}

private void GreenB_Click_1(object sender, RoutedEventArgs e)

{

Frame1.Background = new SolidColorBrush(Windows.UI.Colors.Green);

}

private void YelloB_Click_1(object sender, RoutedEventArgs e)

{

Frame1.Background = new SolidColorBrush(Windows.UI.Colors.Yellow);

}

private void BlueB_Click_1(object sender, RoutedEventArgs e)

{

Frame1.Background = new SolidColorBrush(Windows.UI.Colors.Blue);

}

}

}


Code 5 : After running this code the output looks like this:

img3.gif

Click the Red color in the Color Box.

img4.gif

Click the Blue color in the Color Box.

img5.gif