Windows 10 – Universal Windows Platform – Colour Control

Step 1

Download Visual Studio Community 2015 and install it onto your computer, if it’s already downloaded and installed select Launch to start Visual Studio Community 2015 or if it has already been downloaded and installed then start the application you may also need to Enable your device for development.

2015-visual-studio

Step 2

Once Visual Studio Community 2015 has started select File, then New, then Project… from the Menu.

2015-file-new-project

Step 3

From the New Project window select Visual C# from Installed, Templates then select Blank App (Windows Universal) from the list, then type in the Name as ColourControl and select a Location to save to before selecting Ok to create the Project.

2015-colour-control-add-new-project

Step 4

Once done select from the Menu, Project, then Add New Item…

2015-project-add-new-item

Step 5

From the Add New Item window select Visual C# from Installed and select Code then select Code File from the list, then type in the Name as ColourPicker.cs before selecting Add to add the file to the Project

2015-colour-control-combobox-add

Step 6

Once in the Code View for ColourPicker.cs the following should be entered:

using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text.RegularExpressions;
using Windows.UI;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Markup;

namespace ColourControl
{
    public class ColourPicker : ComboBox
    {
        private static IEnumerable<string> splitCapital(string text)
        {
            Regex regex = new Regex(@"\p{Lu}\p{Ll}*");
            foreach (Match match in regex.Matches(text))
            {
                yield return match.Value;
            }
        }

        private Dictionary<string, Color> colours = typeof(Colors)
        .GetRuntimeProperties()
        .Select(c => new
        {
            Color = (Color)c.GetValue(null),
            Name = string.Join(" ", splitCapital(c.Name))
        }).ToDictionary(x => x.Name, x => x.Color);

        public ColourPicker()
        {
            this.ItemTemplate = (DataTemplate)XamlReader.Load(
            "<DataTemplate xmlns=\"http://schemas.microsoft.com/winfx/2006/xaml/presentation\">" +
            "<StackPanel Orientation=\"Horizontal\">" +
            "<Rectangle Width=\"20\" Height=\"15\" Margin=\"5,0\"><Rectangle.Fill>" +
            "<SolidColorBrush Color=\"{Binding Value}\"/></Rectangle.Fill></Rectangle>" +
            "<TextBlock VerticalAlignment=\"Center\" Text=\"{Binding Key}\"/>" +
            "</StackPanel></DataTemplate>");
            this.SelectedValuePath = "Value";
            this.ItemsSource = colours;
        }

        public Color Selected
        {
            get { return ((KeyValuePair<string, Color>)SelectedItem).Value; }
        }
    }
}

It should then appear as such:

2015-colour-control-combobox-code

Step 7

Then select from the Menu, Build, then Build Solution

2015-build

Step 8

From the Solution Explorer select MainPage.xaml

2015-mainpage-library

Step 9

Select from the Menu, View then Designer

2015-view-designer

Step 10

The Design View will be displayed along with the XAML View and in this below <Grid Background=”{ThemeResource ApplicationPageBackgroundThemeBrush}”> enter the following XAML:

<Grid>
	<Grid.RowDefinitions>
		<RowDefinition Height="Auto"/>
		<RowDefinition Height="*"/>
	</Grid.RowDefinitions>
	<local:ColourPicker Grid.Row="0" x:Name="Picker" SelectionChanged="Picker_SelectionChanged"
		HorizontalAlignment="Stretch"/>
	<Rectangle Grid.Row="1" Name="Display"/>
</Grid>

It should appear as such:

2015-colour-control-mainpage-xaml

Step 11

Select from the Menu, View then Code

2015-view-code

Step 12

Once in the Code View below the public MainPage() { … } the following should be entered:

private void Picker_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
	Display.Fill = new SolidColorBrush(Picker.Selected);
}

It should then appear as such:

2015-colour-control-mainpage-code

Step 13

That completes the Universal Windows Application so Save the Project then select the Debug and Simulator option to run the Application

2015-simulator

Step 14

Once the Simulator has started the Application should then appear

2015-colour-control-simulator-run

Step 15

After the Application has started running you can select a Colour from the list to see a preview of it in the Application

2015-colour-control-simulator-ran

Step 16

Another option is to run as a Windows 10 Mobile application, select Debug and select Emulator 10.0.10586.0 WVGA 4 inch 512MB option to run the Application

2015-emulator

Step 17

Once the Emulator has started the Application should then appear

2015-colour-control-emulator-run

Step 18

After the Application has started running you can select a Colour from the list to see a preview of it in the Application

2015-colour-control-emulator-ran

Step 19

To Exit the application select Stop Debugging in Visual Studio Community 2015

2015-stop

Creative Commons License

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