Changing Theme

There is 3 themes (Light, Dark and Violet) that you can use in your application.

Set Skin in Xaml

set Skin tag in <hc:Theme

<ResourceDictionary.MergedDictionaries>
     <hc:Theme Skin="Dark"/>
</ResourceDictionary.MergedDictionaries>

Set Skin in Code-Behind

set a name for <hc:Theme and create a function

<ResourceDictionary.MergedDictionaries>
     <hc:Theme Name="HandyTheme"/>
</ResourceDictionary.MergedDictionaries>

internal void UpdateSkin(SkinType skin)
{
    SharedResourceDictionary.SharedDictionaries.Clear();
    ResourceHelper.GetTheme("HandyTheme", Resources).Skin = skin;
    Current.MainWindow?.OnApplyTemplate();
}

WARNING

In older versions, follow this

<Application.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="pack://application:,,,/HandyControl;component/Themes/SkinDefault.xaml"/>
            <ResourceDictionary Source="pack://application:,,,/HandyControl;component/Themes/Theme.xaml"/>
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</Application.Resources>

public void UpdateSkin(SkinType skin)
        {
            SharedResourceDictionary.SharedDictionaries.Clear();
            Resources.MergedDictionaries.Add(ResourceHelper.GetSkin(skin));
            Resources.MergedDictionaries.Add(new ResourceDictionary
            {
                Source = new Uri("pack://application:,,,/HandyControl;component/Themes/Theme.xaml")
            });
            Current.MainWindow?.OnApplyTemplate();
        }

now you can change your theme in this way:

UpdateSkin(SkinType.Dark);

Themes

Name
Default
Dark
Violet

Accent Color

you can change AccentColor

<ResourceDictionary.MergedDictionaries>
     <hc:Theme AccentColor="Red"/>
</ResourceDictionary.MergedDictionaries>

SyncWithSystem

Sync your applicatio theme with windows 10 theme

<ResourceDictionary.MergedDictionaries>
     <hc:Theme SyncWithSystem="true"/>
</ResourceDictionary.MergedDictionaries>

Adding or Overriding styles and colors according to the theme of the program

you can override or add colors and styles, for doing that follow the instructions

• first create folders: Resources\Themes\Styles Resources\Themes\Basic\Colors

• second create xaml

Resources\Themes\Theme.xaml
Resources\Themes\SkinDark.xaml
Resources\Themes\SkinDefault.xaml
Resources\Themes\SkinViolet.xaml

Resources\Themes\Styles\Style.xaml

Resources\Themes\Basic\Colors\Colors.xaml
Resources\Themes\Basic\Colors\ColorsDark.xaml
Resources\Themes\Basic\Colors\ColorsViolet.xaml

Resources\Themes\Basic\Basic.xaml
Resources\Themes\Basic\Brushes.xaml
Resources\Themes\Basic\Converters.xaml
Resources\Themes\Basic\Fonts.xaml
Resources\Themes\Basic\Geometries.xaml

If you follow these instructions, your styles and colors will change with a dark and light theme

Colors

You can put the colors in this color files.

Resources\Themes\Basic\Colors\Colors.xaml
Resources\Themes\Basic\Colors\ColorsDark.xaml
Resources\Themes\Basic\Colors\ColorsViolet.xaml

To support the dark or violet mode, you need to write all three files You can also skip them and use only the Colors.xaml file (But then your colors will not change with the theme)

    <Color x:Key="PrimaryColor">#326cf3</Color>

WARNING

The key must be the same in all files

Brushes, Converters, Fonts, Geometries, Styles

You can put any of the brushes, converters, fonts, styles and geometries In those files.

Basic

We address Brushes.xaml, Geometries.xaml, Converters.xaml and Fonts.xaml dictionaries in this file, So our file will be like this

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

    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="Brushes.xaml"/>
        <ResourceDictionary Source="Geometries.xaml"/>
        <ResourceDictionary Source="Converters.xaml"/>
        <ResourceDictionary Source="Fonts.xaml"/>
    </ResourceDictionary.MergedDictionaries>

</ResourceDictionary>

SkinDark.xaml, SkinViolet.xaml, SkinDefault.xaml

We need to specify the color files in these files, For example, we do this for SkinDark.xaml file

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

    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="Basic/Colors/ColorsDark.xaml"/>
    </ResourceDictionary.MergedDictionaries>

</ResourceDictionary>

Theme.xaml

We address Basic.xaml and Style.xaml dictionaries in this file, So our file will be like this

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

    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="Basic/Basic.xaml"/>
        <ResourceDictionary Source="Styles/Style.xaml"/>
    </ResourceDictionary.MergedDictionaries>

</ResourceDictionary>

Last Step

create a class called DemoTheme.cs this class should inherit from Theme

NOTE

HandyControlDemo is your application namespace

public class DemoTheme : Theme
    {
        public override Uri ThemeUri => new Uri("pack://application:,,,/HandyControlDemo;component/Resources/Themes/Theme.xaml");

        public override ResourceDictionary GetSkin(SkinType skinType) =>
            ResourceHelper.GetSkin(typeof(App).Assembly, "Resources/Themes", skinType);
    }

now in app.xaml

<ResourceDictionary.MergedDictionaries>
     <hc:Theme Name="HandyTheme"/>
     <resources:DemoTheme Name="DemoTheme"/>
</ResourceDictionary.MergedDictionaries>

and for changing theme we should update our UpdateSkin function

internal void UpdateSkin(SkinType skin)
{
    SharedResourceDictionary.SharedDictionaries.Clear();
    ResourceHelper.GetTheme("HandyTheme", Resources).Skin = skin;
    ResourceHelper.GetTheme("DemoTheme", Resources).Skin = skin;

    Current.MainWindow?.OnApplyTemplate();
}