Skip to main content

UWP - How to use ListView item click event

UWP - ListView Item Click Event
The ListView class represents a control that displays data items in a vertical stack. The UWP app developers can use ListView to display a collection of items stacked vertically or horizontally. The ListView is an ItemsControl, so the ListView can contain a collection of items of any type. To populate a ListView the UWP developers have to add items to the Items collection or set the ItemsSource property to a data source. The ListView data item is displayed as the string representation by default.

The following Universal Windows Platform application development tutorial demonstrates how we can handle the item click event in a LisTview control.

In this UWP tutorial code, we put some items into a ListView control using an array item source. We data bind the LisView control programmatically by c# language. Then we add an ItemClick event to the ListView control. We display the ListView clicked item on a dialog when the user clicks an item of ListView.

The ListView ItemClick event occurs when an item in the list view receives an interaction, and the IsItemClickEnabled property is true. This event is inherited from ListViewBase. This event type is ItemClickEventHandler. The ItemClickEventHandler delegate represents the method that will handle an ItemClick event.

The ItemClickEventHandler(object sender, ItemClickEventArgs e) method has two parameters named sender and e. The sender parameter is an Object which is the object to which the handler is attached. And the e parameter is an ItemClickEventArgs which is the event data for the event.

The ItemClickEventArgs class ClickedItem property gets a reference to the clicked item.

The ListView class IsItemClickEnabled property gets or sets a value that indicates whether items in the view fire an ItemClick event in response to interaction. This property is also inherited from ListViewBase.

The MessageDialog class represents a dialog for showing messages to the user.
MainPage.xaml

<Page
    x:Class="UniversalAppTutorials.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:UniversalAppTutorials"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">
    <StackPanel 
        x:Name="stack_panel1" 
        Margin="50" 
        Orientation="Vertical"
        Background="AliceBlue"
        Padding="25"
        >
        <ListView
            x:Name="ListView1"
            Background="Olive"
            IsItemClickEnabled="True"
            ItemClick="ListView1_ItemClick"
            >
        </ListView>
    </StackPanel>
</Page>
MainPage.xaml.cs

using Windows.UI.Xaml.Controls;
using Windows.UI.Popups;


namespace UniversalAppTutorials
{
    public sealed partial class MainPage : Page
    {
        public MainPage()
        {
            this.InitializeComponent();

            // Initialize a new string array
            string[] colors = {
                "Red",
                "Green",
                "Orange",
                "Gray",
                "Cornsilk",
                "Cyan",
                "Bisque",
                "Beige",
                "Coral"
            };

            // Data bind the list view with array items
            ListView1.ItemsSource = colors;
        }


        private void ListView1_ItemClick(object sender, ItemClickEventArgs e)
        {
            // Get the list view clicked item text
            string clickedItemText = e.ClickedItem.ToString();

            // Initialize a new message dialog
            MessageDialog dialog = new MessageDialog("Clicked : " + clickedItemText);

            // Finally, display the clicked item text on dialog
            dialog.ShowAsync();
        }
    }
}
Labels:

Popular posts from this blog

Restricting Jetpack Compose TextField to Numeric Input Only

Jetpack Compose has revolutionized Android development with its declarative approach, enabling developers to build modern, responsive UIs more efficiently. Among the many components provided by Compose, TextField is a critical building block for user input. However, ensuring that a TextField accepts only numeric input can pose challenges, especially when considering edge cases like empty fields, invalid characters, or localization nuances. In this blog post, we'll explore how to restrict a Jetpack Compose TextField to numeric input only, discussing both basic and advanced implementations. Why Restricting Input Matters Restricting user input to numeric values is a common requirement in apps dealing with forms, payment entries, age verifications, or any data where only numbers are valid. Properly validating input at the UI level enhances user experience, reduces backend validation overhead, and minimizes errors during data processing. Compose provides the flexibility to implement ...
Read more

jetpack compose - TextField remove underline

Compose TextField Remove Underline The TextField is the text input widget of android jetpack compose library. TextField is an equivalent widget of the android view system’s EditText widget. TextField is used to enter and modify text. The following jetpack compose tutorial will demonstrate to us how we can remove (actually hide) the underline from a TextField widget in an android application. We have to apply a simple trick to remove (hide) the underline from the TextField. The TextField constructor’s ‘colors’ argument allows us to set or change colors for TextField’s various components such as text color, cursor color, label color, error color, background color, focused and unfocused indicator color, etc. Jetpack developers can pass a TextFieldDefaults.textFieldColors() function with arguments value for the TextField ‘colors’ argument. There are many arguments for this ‘TextFieldDefaults.textFieldColors()’function such as textColor, disabledTextColor, backgroundColor, cursorC...
Read more

jetpack compose - Image clickable

Compose Image Clickable The Image widget allows android developers to display an image object to the app user interface using the jetpack compose library. Android app developers can show image objects to the Image widget from various sources such as painter resources, vector resources, bitmap, etc. Image is a very essential component of the jetpack compose library. Android app developers can change many properties of an Image widget by its modifiers such as size, shape, etc. We also can specify the Image object scaling algorithm, content description, etc. But how can we set a click event to an Image widget in a jetpack compose application? There is no built-in property/parameter/argument to set up an onClick event directly to the Image widget. This android application development tutorial will demonstrate to us how we can add a click event to the Image widget and make it clickable. Click event of a widget allow app users to execute a task such as showing a toast message by cli...
Read more