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Windows Presentation Foundation (WPF) is a powerful framework for building rich, interactive user interfaces. One of the many features of WPF is the ability to easily change the appearance and feel of the UI by leveraging various styles and themes. This article provides detailed explanations on how to apply styles in WPF development, along with several examples for practical application.

1. Concept of WPF Styles

Styles are an essential element of WPF, providing a way to consistently set the properties of various visual elements that make up the user interface. By using styles, you can define the appearance of UI elements and reuse these definitions to reduce code duplication. For example, you can apply the same style to all elements such as buttons, text boxes, and check boxes, creating a unified visual effect.

2. Basic Structure of Styles

In WPF, styles are primarily defined using the Style element. Each style has the following basic structure:

<Style x:Key="MyButtonStyle" TargetType="Button">
    <Setter Property="Background" Value="LightBlue"/>
    <Setter Property="Foreground" Value="White"/>
    <Setter Property="FontSize" Value="16"/>
    <Setter Property="Padding" Value="10"/>
</Style>

This style is named “MyButtonStyle” and targets the Button. You can customize the appearance of the button by setting various properties.

3. Applying Styles

To apply a defined style to a UI element, simply assign the style to the element’s Style property. For example:

<Button Style="{StaticResource MyButtonStyle}" Content="Click me"/>

In the example above, the “MyButtonStyle” style is applied to the Button. Styles can be reused easily like this.

4. Utilizing Multiple Styles and Triggers

You can use the Trigger element to define properties in styles that change based on conditions. This allows you to add various visual effects based on the state of UI elements.

<Style x:Key="MyButtonStyleWithTrigger" TargetType="Button">
    <Setter Property="Background" Value="LightBlue"/>
    <Setter Property="Foreground" Value="White"/>
    <Setter Property="FontSize" Value="16"/>

    <Style.Triggers>
        <Trigger Property="IsMouseOver" Value="True">
            <Setter Property="Background" Value="DarkBlue"/>
        </Trigger>
    </Style.Triggers>
</Style>

In the style example above, the button’s background color changes when the mouse is over it. By applying state-based styles like this, user interactions become smoother.

5. Utilizing Resource Dictionaries

Style definitions can be stored in a resource dictionary, allowing for systematic management of styles in large projects. By using resource dictionaries, styles can be shared across multiple XAML files, facilitating easier maintenance.

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Style x:Key="MyButtonStyle" TargetType="Button">
        <Setter Property="Background" Value="LightGreen"/>
        <Setter Property="Foreground" Value="Black"/>
    </Style>
</ResourceDictionary>

6. Defining and Applying Themes and Styles in XAML

Defining and applying themes in XAML is one of the ways to maximize user experience. By grouping multiple styles into themes, you can enhance consistency across the entire application. Below is an example of setting up a default theme:

<Application.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="Themes/LightTheme.xaml"/>
            <ResourceDictionary Source="Themes/DarkTheme.xaml"/>
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</Application.Resources>

This way, multiple themes can be switched dynamically. If theme files are managed as resource dictionaries, they can be easily switched as needed in the application.

7. Conclusion

Styles and themes in WPF are powerful tools for UI development. Utilizing them allows for consistency in user interfaces, reduction of code duplication, and easier maintenance. Apply the knowledge gained above to add great styles and themes to your WPF applications.

In particular, leveraging various triggers and resource dictionaries can help manage complex UIs. A thoughtful design considering user interactions will significantly enhance user experience.

Today, we will learn how to develop a converter using WPF (Windows Presentation Foundation).
WPF is a framework provided by Microsoft for developing GUI applications and offers powerful features for implementing digital user interfaces.
In this tutorial, we will start from the basic concepts of WPF and explain in detail the process of implementing the functionality of the converter.

1. What is WPF?

WPF is part of the .NET framework and is used to implement advanced user interfaces.
One of the main features of WPF is the ability to define the UI using XAML (Extensible Application Markup Language).
Using XAML allows you to describe UI components intuitively and can be used in conjunction with .NET languages like C# to implement logic.
This makes it advantageous for developing complex UIs with WPF.

2. Overview of the Converter Application

The converter we will develop in this tutorial is a small application that performs conversions between two formats.
For example, it will provide temperature conversion (Celsius to Fahrenheit and Fahrenheit to Celsius) and length conversion (meters to feet and feet to meters).
Users can enter values in the input field and click the convert button to see the results.

3. Setting Up the Development Environment

To develop a WPF application, Visual Studio is required.
The Visual Studio Community version is free to use and can be easily installed to start working on WPF applications.
After installation, create a new project and select WPF App (.NET Core or .NET Framework).

4. Project Structure

The basic structure of a WPF project is as follows:

• MainWindow.xaml: A XAML file that defines the UI elements.
• MainWindow.xaml.cs: A C# code file that implements the UI logic.
• App.xaml: Defines the application’s entry point and resources.

5. Designing the UI with XAML

        <Window x:Class="ConverterApp.MainWindow"
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                Title="Converter" Height="350" Width="525">
            <Grid>
                <Label Content="Temperature Converter" FontSize="24" HorizontalAlignment="Center" Margin="10"/>
                <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center">
                    <TextBox x:Name="InputValue" Width="200" Margin="5" />
                    <ComboBox x:Name="InputUnit" Width="200" Margin="5">
                        <ComboBoxItem Content="Celsius" />
                        <ComboBoxItem Content="Fahrenheit" />
                    </ComboBox>
                    <Button Content="Convert" Width="200" Margin="5" Click="ConvertButton_Click"/>
                    <TextBlock x:Name="ResultText" FontSize="16" Margin="5"/>
                </StackPanel>
            </Grid>
        </Window>
    

The above XAML code creates a basic UI. It takes temperature input from the user and provides a combo box to select either Celsius or Fahrenheit.
When the convert button is clicked, the conversion results are displayed based on the input value.

6. Implementing C# Code

Below is the C# code that implements the conversion logic. Write this in the MainWindow.xaml.cs file.

        using System;
        using System.Windows;

        namespace ConverterApp
        {
            public partial class MainWindow : Window
            {
                public MainWindow()
                {
                    InitializeComponent();
                }

                private void ConvertButton_Click(object sender, RoutedEventArgs e)
                {
                    double inputValue;
                    bool isValid = double.TryParse(InputValue.Text, out inputValue);
                    
                    if (!isValid)
                    {
                        ResultText.Text = "Please enter a valid number.";
                        return;
                    }

                    if (InputUnit.SelectedIndex == 0) // Celsius
                    {
                        double result = (inputValue * 9 / 5) + 32;
                        ResultText.Text = $"{inputValue} °C is {result} °F.";
                    }
                    else // Fahrenheit
                    {
                        double result = (inputValue - 32) * 5 / 9;
                        ResultText.Text = $"{inputValue} °F is {result} °C.";
                    }
                }
            }
        }
    

In the above C# code, we define the ConvertButton_Click method, which is called when the convert button is clicked.
It reads the value entered by the user and performs the appropriate conversion based on the selected unit.
If the input value is not valid, a warning message is displayed to inform the user.

7. Adding Length Converter

Next, let’s add the length conversion feature. Modify the UI to add a length conversion button and implement the conversion logic.

        <Label Content="Length Converter" FontSize="24" HorizontalAlignment="Center" Margin="10"/>
        <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center">
            <TextBox x:Name="LengthInputValue" Width="200" Margin="5" />
            <ComboBox x:Name="LengthInputUnit" Width="200" Margin="5">
                <ComboBoxItem Content="Meters" />
                <ComboBoxItem Content="Feet" />
            </ComboBox>
            <Button Content="Convert" Width="200" Margin="5" Click="LengthConvertButton_Click"/>
            <TextBlock x:Name="LengthResultText" FontSize="16" Margin="5"/>
        </StackPanel>
    

After adding the length conversion UI in a similar fashion, add the length conversion logic to the MainWindow.xaml.cs.

        private void LengthConvertButton_Click(object sender, RoutedEventArgs e)
        {
            double inputLengthValue;
            bool isLengthValid = double.TryParse(LengthInputValue.Text, out inputLengthValue);
            
            if (!isLengthValid)
            {
                LengthResultText.Text = "Please enter a valid number.";
                return;
            }

            if (LengthInputUnit.SelectedIndex == 0) // Meters
            {
                double lengthResult = inputLengthValue * 3.28084;
                LengthResultText.Text = $"{inputLengthValue} meters is {lengthResult} feet.";
            }
            else // Feet
            {
                double lengthResult = inputLengthValue / 3.28084;
                LengthResultText.Text = $"{inputLengthValue} feet is {lengthResult} meters.";
            }
        }
    

8. Running and Testing the Application

Once all features are implemented, run the application to test if the converter works correctly.
Enter various values and units to verify that the conversions are done properly.
You can improve the UI or add additional features as needed.

9. Conclusion

In this tutorial, we have looked at the process of developing a basic converter application using WPF.
We were able to create an application that interacts with users utilizing the advantages of XAML for UI composition and C# for logic implementation.
I hope to deepen this technology through various WPF projects in the future.

10. References

– Getting Started with WPF
– Step-by-Step Guide to Developing WPF Applications

WPF (Windows Presentation Foundation) is a powerful tool for creating desktop applications. It allows users to build diverse user interfaces in both mobile and desktop environments. WPF is based on XAML (Extensible Application Markup Language) and supports features such as data binding, styling, templates, and animations. In this article, we will explore the concept of ‘Transformations’ in WPF. Transformations are useful for manipulating the position, size, and rotation of UI elements to create various visual effects.

1. Concept of Transform

Transformations are necessary techniques for changing the visual representation of UI elements in WPF. They are primarily divided into three types:

• Move: Moves the UI element to a specified position.
• Rotate: Rotates the UI element by a specified angle.
• Scale: Adjusts the size of the UI element.

Transformations can be applied directly to UI elements, enabling users to enhance the visual representation of their applications. Transformations are typically implemented using the RenderTransform and LayoutTransform properties.

2. Implementing Transformations

The easiest way to implement transformations is by using XAML. For example, let’s apply a transformation that moves a simple rectangle.

2.1 Implementing a Simple Move Transformation with XAML

The following is an example of XAML code for a WPF application. This code includes a transformation that moves the rectangle:

        <Window x:Class="WpfApp.MainWindow"
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                Title="Transform Example" Height="350" Width="525">
            <Grid>
                <Rectangle Width="100" Height="100" Fill="Blue">
                    <Rectangle.RenderTransform>
                        <TranslateTransform X="50" Y="50"/>
                    </Rectangle.RenderTransform>
                </Rectangle>
            </Grid>
        </Window>
    

In the example above, the rectangle is drawn on the screen after moving (50, 50) from its original position. The movement along the X and Y axes is defined using TranslateTransform.

2.2 Implementing a Rotation Transformation

Now, let’s look at an example that rotates a rectangle. The following code rotates the rectangle by 45 degrees:

        <Rectangle Width="100" Height="100" Fill="Green">
            <Rectangle.RenderTransform>
                <RotateTransform Angle="45"/>
            </Rectangle.RenderTransform>
        </Rectangle>
    

Here, RotateTransform is used to rotate the rectangle by 45 degrees. The rotation transformation effectively represents the rotation of the UI element visually.

2.3 Implementing a Scale Transformation

Let’s see an example of scaling the rectangle. The following code doubles the size of the rectangle:

        <Rectangle Width="100" Height="100" Fill="Red">
            <Rectangle.RenderTransform>
                <ScaleTransform ScaleX="2" ScaleY="2"/>
            </Rectangle.RenderTransform>
        </Rectangle>
    

In this example, ScaleTransform is used to double the size of the rectangle. By adjusting the ScaleX and ScaleY properties, the scale for the X and Y axes can be set respectively.

3. Transformations Through Animation

In WPF, transformations can be combined with animations to create even more powerful visual effects. Below is an example that implements an animation for moving a rectangle.

3.1 Example of Move Animation

The following is an example of adding animation in WPF XAML:

        <Window x:Class="WpfApp.MainWindow"
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                Title="Transform Animation" Height="350" Width="525">
            <Window.Resources>
                <Storyboard x:Key="MoveAnimation">
                    <DoubleAnimation Storyboard.TargetName="AnimatedRectangle"
                                     Storyboard.TargetProperty="(UIElement.RenderTransform).(TranslateTransform.X)"
                                     From="0" To="100" Duration="0:0:1" AutoReverse="True" RepeatBehavior="Forever"/>
                </Storyboard>
            </Window.Resources>
            <Grid>
                <Rectangle x:Name="AnimatedRectangle" Width="100" Height="100" Fill="Blue" MouseDown="Rectangle_MouseDown">
                    <Rectangle.RenderTransform>
                        <TranslateTransform X="0" Y="0"/>
                    </Rectangle.RenderTransform>
                </Rectangle>
            </Grid>
        </Window>
    

In the above code, Storyboard is used to specify the animation for the X transformation of the rectangle. To make the animation start on mouse button click, the corresponding method can be implemented in the code-behind.

3.2 Code-Behind (C#) Example

        private void Rectangle_MouseDown(object sender, MouseButtonEventArgs e)
        {
            Storyboard moveAnimation = (Storyboard)this.Resources["MoveAnimation"];
            moveAnimation.Begin();
        }
    

This method starts the animation when the rectangle is clicked.

4. Conclusion

In this article, we explored how to utilize transformations in WPF. Transformations play an essential role in providing visually appealing effects to users by adjusting the position, rotation, and size of UI elements. By leveraging WPF transformation features, it becomes easier to create intricate UIs and enhance the overall user experience of applications.

Properly utilizing transformations in WPF development can make user interactions more engaging and provide visual feedback. Combine various transformation techniques and animations to create your unique UI.

Windows Presentation Foundation (WPF) is a powerful and flexible GUI application development framework. WPF supports data binding, styles and templates, advanced graphics, and a flexible layout system, enhancing productivity and user experience. In this article, we will explore how to display collections using list controls in WPF. Specifically, we will focus on controls such as ListBox, ComboBox, and DataGrid, and practice through examples.

Introduction to List Controls in WPF

List controls in WPF provide a way for users to display and interact with data. There are various types of list controls, each with different characteristics and use cases. Here, we will take a closer look at three main list controls.

1. ListBox

ListBox is a control that displays multiple items and allows users to select items. It supports various selection modes and allows for different styles and templates to be applied to list items. ListBox is useful for displaying a general list or allowing item selection.

ListBox Example

<Window x:Class="WpfApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="ListBox Example" Height="350" Width="525">
    <Grid>
        <ListBox Name="PersonsListBox" Width="200" Height="300" 
                 SelectionChanged="PersonsListBox_SelectionChanged">
            <ListBoxItem>Alice</ListBoxItem>
            <ListBoxItem>Bob</ListBoxItem>
            <ListBoxItem>Charlie</ListBoxItem>
            <ListBoxItem>Diana</ListBoxItem>
        </ListBox>
        <TextBlock Name="SelectedPersonTextBlock" VerticalAlignment="Top" 
                   Margin="220,10,0,0"/>
    </Grid>
</Window>

In the example above, the ListBox control is used to display the names of a few individuals. Whenever the user selects an item, the name of the selected person is displayed in the TextBlock. This is accomplished by leveraging the SelectionChanged event.

using System.Windows;

namespace WpfApp
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void PersonsListBox_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
        {
            if (PersonsListBox.SelectedItem != null)
            {
                SelectedPersonTextBlock.Text = "Selected Person: " + PersonsListBox.SelectedItem.ToString();
            }
        }
    }
}

2. ComboBox

ComboBox provides a dropdown list and displays a list of items that the user can select. It is similar to ListBox but displays only one value by default, saving space for the user. ComboBox is useful when there are many selectable items.

ComboBox Example

<Window x:Class="WpfApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="ComboBox Example" Height="300" Width="400">
    <Grid>
        <ComboBox Name="FruitsComboBox" Margin="10" SelectionChanged="FruitsComboBox_SelectionChanged">
            <ComboBoxItem>Apple</ComboBoxItem>
            <ComboBoxItem>Banana</ComboBoxItem>
            <ComboBoxItem>Cherry</ComboBoxItem>
            <ComboBoxItem>Date</ComboBoxItem>
        </ComboBox>
        <TextBlock Name="SelectedFruitTextBlock" VerticalAlignment="Bottom" Margin="10"/>
    </Grid>
</Window>

In the above example, the ComboBox is used to display a list of fruits and update the selected fruit’s name in the TextBlock. When the user selects an item from the ComboBox, the SelectionChanged event is triggered, displaying the selected value.

using System.Windows;

namespace WpfApp
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void FruitsComboBox_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
        {
            if (FruitsComboBox.SelectedItem != null)
            {
                SelectedFruitTextBlock.Text = "Selected Fruit: " + FruitsComboBox.SelectedItem.ToString();
            }
        }
    }
}

3. DataGrid

DataGrid is used to display a list of data items in a tabular format. DataGrid allows for easy editing and displaying of large amounts of data, providing features such as column headers, sorting, filtering, and paging.

DataGrid Example

<Window x:Class="WpfApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="DataGrid Example" Height="350" Width="525">
    <Grid>
        <DataGrid Name="PersonsDataGrid" AutoGenerateColumns="False">
            <DataGrid.Columns>
                <DataGridTextColumn Header="Name" Binding="{Binding Name}" Width="*"/>
                <DataGridTextColumn Header="Age" Binding="{Binding Age}" Width="*"/>
            </DataGrid.Columns>
        </DataGrid>
    </Grid>
</Window>

In the example above, the DataGrid is used to display the names and ages of individuals in a tabular format. By setting AutoGenerateColumns to false, we can manually define the columns and bind the data.

using System.Collections.Generic;
using System.Windows;

namespace WpfApp
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            List persons = new List
            {
                new Person { Name = "Alice", Age = 30 },
                new Person { Name = "Bob", Age = 25 },
                new Person { Name = "Charlie", Age = 35 },
                new Person { Name = "Diana", Age = 28 }
            };

            PersonsDataGrid.ItemsSource = persons;
        }
    }

    public class Person
    {
        public string Name { get; set; }
        public int Age { get; set; }
    }
}

Collections and Data Binding

In WPF, data binding is a very powerful feature that connects the UI to the data. Using data binding, you can connect the properties of UI elements to the properties of a data source, allowing the UI to reflect changes in the data automatically. This reduces the need to manually update the UI and simplifies code complexity.

You can easily bind model classes with UI controls, just like an object that holds collections. The following is an example of binding data using ObservableCollection.

using System.Collections.ObjectModel;
using System.Windows;

namespace WpfApp
{
    public partial class MainWindow : Window
    {
        public ObservableCollection Persons { get; set; }
        
        public MainWindow()
        {
            InitializeComponent();
            Persons = new ObservableCollection
            {
                new Person { Name = "Alice", Age = 30 },
                new Person { Name = "Bob", Age = 25 },
                new Person { Name = "Charlie", Age = 35 },
                new Person { Name = "Diana", Age = 28 }
            };

            PersonsDataGrid.ItemsSource = Persons;
        }
    }

    public class Person
    {
        public string Name { get; set; }
        public int Age { get; set; }
    }
}

ObservableCollection automatically handles change notifications, allowing the UI to reflect changes in the data in real-time. The UI is updated automatically when items are added or removed.

Summary and Conclusion

In this article, we have learned how to display collections using list controls in WPF. By using various list controls like ListBox, ComboBox, and DataGrid, we can provide opportunities to display data to users and interact with it. Data binding allows for easy connections between the UI and data, facilitating the simple development of applications.

Utilize the powerful features of WPF to develop richer and more flexible user interfaces. If you have any additional questions or need assistance, please feel free to contact us.

In Windows Presentation Foundation (WPF), list controls are essential elements that manage interactions between the user and data. WPF provides various list controls by default, including ListBox, ComboBox, ListView, and DataGrid. These list controls provide a powerful means for users to visually explore and select data. However, these built-in list controls can be customized to meet specific requirements of the application. This article will detail how to customize list controls in WPF.

1. Overview of WPF List Controls

In WPF, list controls support data binding, making them suitable for implementing the Model-View-ViewModel (MVVM) pattern. This allows developers to separate UI and business logic, enhancing maintainability. List controls provide the following basic functionalities.

• Data Binding: You can bind a data source to the list control to automatically reflect dynamically changed data.
• Templates: You can define custom templates to use for displaying items.
• Events: You can handle various events, such as item selection and mouse clicks.

2. The Need for Customizing List Controls

Default list controls often do not meet specific requirements, necessitating customization. Custom list controls can provide the following benefits.

• Customized UI: You can freely design the UI to provide a better user experience.
• Functionality Extension: You can extend the functionality of the basic list controls to meet specific business needs.
• Reusability: You can create custom controls that can be reused across different projects.

3. Implementing a Custom List Control

The process of creating a custom list control can be broadly divided into two stages: UI design using XAML and functionality implementation using C#.

3.1. Designing the List Control with XAML

The above XAML code defines a custom list control. The ListBox displays a list of items, where each item is arranged horizontally using a StackPanel to show Name and Value.

3.2. Data Model and Business Logic using C#

Next, let’s create a data model that defines the data to be bound to the list control. We will create a simple model class.

public class ItemModel
{
    public string Name { get; set; }
    public int Value { get; set; }
}

The above ItemModel class has two properties: Name and Value. Now, we will add a data source to the custom control.

public partial class CustomListControl : UserControl
{
    public ObservableCollection Items { get; set; }

    public CustomListControl()
    {
        InitializeComponent();
        Items = new ObservableCollection
        {
            new ItemModel { Name = "Item 1", Value = 10 },
            new ItemModel { Name = "Item 2", Value = 20 },
            new ItemModel { Name = "Item 3", Value = 30 }
        };
        DataContext = this;
    }
}

In the code above, we define the Items property using ObservableCollection. ObservableCollection automatically reflects changes in the data in the UI. Sample data has been added in the constructor.

4. Advanced List Control with Event Handling

The basic custom list control described earlier focuses on displaying data. Now, let’s add advanced features that take specific actions when an item is selected. This process includes handling the selection events of the ListBox.

private void ListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    if (listBox.SelectedItem is ItemModel selectedItem)
    {
        MessageBox.Show($"Selected Item: {selectedItem.Name}, Value: {selectedItem.Value}");
    }
}

The above code is a SelectionChanged event handler called when an item is selected in the ListBox. It shows the information of the selected item in a message box.

5. Custom Styles and Templates

You can apply styles and templates to improve the appearance of the custom list control. Here, we will add styles to the basic ListBox to create a more attractive UI.

The above XAML code defines the item style for the ListBox. Selected items are highlighted with different background and foreground colors. Such styles can provide better visual feedback to users.

6. Comprehensive Example: Complete Custom List Control

Let’s create a complete custom list control by synthesizing the points discussed above. This example includes data models, custom UI, events, and styles.

public partial class CustomListControl : UserControl
{
    public ObservableCollection Items { get; set; }

    public CustomListControl()
    {
        InitializeComponent();
        Items = new ObservableCollection
        {
            new ItemModel { Name = "Item 1", Value = 10 },
            new ItemModel { Name = "Item 2", Value = 20 },
            new ItemModel { Name = "Item 3", Value = 30 }
        };
        DataContext = this;
    }

    private void ListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        if (listBox.SelectedItem is ItemModel selectedItem)
        {
            MessageBox.Show($"Selected Item: {selectedItem.Name}, Value: {selectedItem.Value}");
        }
    }
}

The above code completes the final custom list control. It includes functionality to display items and show information about the selected item. This control can now be utilized in WPF applications.

7. Conclusion

Customizing list controls in WPF is a crucial way to enhance the UI of an application and improve user experience. This article explored how to create custom list controls in WPF, providing practical implementation examples through XAML and C# code. Custom list controls can provide a more intuitive and engaging business logic to users. The next step could include constructing complex UIs incorporating these controls or implementing interactions with other controls.