LogoLogo
  • Gum Tool
    • Introduction
    • Setup
      • Running from Source
    • Showcase
    • Tutorials and Examples
      • Intro Tutorials
        • 1 - The Basics
        • 2 - Variables Tab
        • 3 - Files
        • 4 - Components
        • 5 - Exposing Variables
        • 6 - Parent
        • 7 - States
        • 8 - State Categories
      • Animation Tutorials
        • 1 - Introduction to Animation
        • 2 - Creating an Animation
        • 3 - Playing Animations inside other Animations
        • 4 - Combining Multiple Categories
      • Examples
        • Bottom-Up Stack
        • Centering
        • Custom NineSlice
        • Health Bar
        • Padding
    • Gum Elements
      • General Properties
        • Alpha
        • Base Type (Inheritance)
        • Blend
        • Clips Children
        • Has Events
        • Height Units
        • Ignored By Parent Size
        • Locked
        • Max Height
        • Max Width
        • Min Height
        • Min Width
        • Order
        • Parent
        • Rotation
        • Visible
        • Variable References
        • Width Units
        • X
        • X Origin
        • X Units
        • Y
        • Y Origin
        • Y Units
      • Behaviors
        • Default Implementation
      • Circle
      • ColoredRectangle
      • Component
        • Default Child Container
      • Container
        • Children Layout
        • Contained Type
        • Is Render Target
        • Stack Spacing
        • Wraps Children
      • NineSlice
        • Blend
        • Custom Frame Texture Coordinate Width
        • Texture Address
        • Texture Left
        • Texture Top
      • Polygon
        • Points
      • Skia Standard Elements
        • General Properties
          • Has Dropshadow
          • Is Filled
          • Use Gradient
        • Arc
          • Start Angle
          • Sweep Angle
          • Thickness
        • Canvas
        • ColoredCircle
        • LottieAnimation
        • RoundedRectangle
          • Corner Radius
        • Svg
      • Sprite
        • Color
        • Source File
        • Texture Address
        • Wrap
      • States
        • Categories
      • Text
        • Blue
        • Color
        • Font
        • Font Scale
        • Font Size
        • Green
        • Is Bold
        • Is Italic
        • MaxLettersToShow
        • Outline Thickness
        • Red
        • Text
        • Text Overflow Horizontal Mode
        • Text Overflow Vertical Mode
        • Use Custom Font
        • Use Font Smoothing
    • Project Tab
    • Code Tab
      • Runtime Generation Details
      • Generation Scope
      • Inheritance Location
      • Is CodeGen Plugin Enabled
      • Show CodeGen Preview
    • Localization
    • Menu
      • Content
      • Project Properties
    • Plugins
      • AddAndRemoveVariablesForType
      • AddMenuItem
      • Export
      • Setting Up Post Build Events
    • Variables
      • Add Variable
    • Bitmap font generator (.fnt)
    • Upgrading
      • Migrating 2025 April 27 to Preview
      • Breaking Changes
        • Removal of Variable Spaces
  • Code
    • Gum Code Reference
      • AnimationRuntime
      • BitmapCharacterInfo
      • BitmapFont
      • Camera
      • CircleRuntime
      • ColoredRectangleRuntime
      • Component Runtimes
      • ContainerRuntime
      • Cursor
      • Gum Class Overview
      • DataUiGrid
        • Reflection
        • Categories
      • ElementSave
        • ToGraphicalUiElement
      • GraphicalUiElement
        • Absolute Values
        • AddToManagers
        • AnimateSelf
        • ApplyState
        • BlendState
        • CanvasHeight
        • CanvasWidth
        • Children
        • ContainedElements
        • Font Values
        • GetAbsoluteHeight
        • GetAbsoluteWidth
        • GetChildByNameRecursively
        • GetFrameworkElementByName
        • IsAllLayoutSuspended
        • Parent
        • RemoveFromManagers
        • UpdateLayout
      • GumProjectSave
      • IDataUi
      • InstanceMember
      • InstanceSave
      • InteractiveGue
        • CurrentInputReceiver
        • RaiseChildrenEventsOutsideOfBounds
        • RollOverBubbling
      • IPositionedSizedObject
      • Layer
      • NineSliceRuntime
      • RectangleRuntime
      • Renderer
        • SinglePixelTexture
      • SelectedState
      • SpriteRenderer
        • LastFrameDrawStates
      • SpriteRuntime
        • TextureAddress
        • TextureHeight
        • TextureLeft
        • TextureTop
        • TextureWidth
      • TextRuntime
        • Color
        • FontScale
        • FontSize
        • HorizontalAlignment
        • Text Wrapping
        • VerticalAlignment
      • VariableSave
    • FNA
    • Kni
    • Meadow
    • MonoGame
      • Setup
        • Linking Game Project to Source (Optional)
      • Tutorials
        • Gum Project Forms Tutorial
          • Setup
          • Gum Screens
          • Common Component Types
          • Styling
          • Multiple Screens
        • Code-Only Gum Forms Tutorial
          • Setup
          • Forms Controls
          • ListBox Items
          • Input in Forms
        • [Deprecated] Gum Project (.gumx) Tutorial
          • Setup
          • Gum Screens
          • Gum Forms
          • Customizing Forms
          • Strongly Typed Components Using Code Generation
          • Multiple Screens
      • Setup for GumBatch (Optional)
      • Loading a Gum Project (Optional)
      • async Programming
      • Custom Runtimes
      • GumBatch
      • Gum Forms
        • Binding (ViewModels)
        • Controls
          • Button
          • CheckBox
          • FrameworkElement
            • BindingContext
            • IsEnabled
            • IsFocused
            • ModalRoot and PopupRoot
            • SetBinding
          • ListBox
          • ListBoxItem
          • MenuItem
          • PasswordBox
          • RadioButton
          • ScrollViewer
            • VerticalScrollBarValue
          • StackPanel
          • Slider
          • TextBox
        • Control Customization In Code
          • MenuItem
        • Control Customization in Gum Tool
        • Gamepad Support
        • Keyboard Support
        • Troubleshooting
      • File Loading
      • Resizing the Game Window
      • Known Issues
      • Samples
        • MonoGameGumFormsSample
    • Nez
    • Silk.NET
    • SkiaGum
      • Setup
        • WPF
    • .NET MAUI
      • Setup
Powered by GitBook
On this page
  • Introduction
  • Code Example - Adding ListBoxItems
  • ListBoxItems use ToString

Was this helpful?

Edit on GitHub
Export as PDF
  1. Code
  2. MonoGame
  3. Gum Forms
  4. Controls

ListBoxItem

PreviousListBoxNextMenuItem

Last updated 5 months ago

Was this helpful?

Introduction

The ListBoxItem class is used by the ListBox control for each instance added to the ListBox.Items property.

Gum Forms includes a default ListBoxItem implementation which includes a single label.

Code Example - Adding ListBoxItems

ListBoxItems can be implicitly instantiated by adding any type of object to a ListBox. The following code creates 20 ListBoxItems, each displaying an integer.

var listBox = new ListBox();
this.Root.Children.Add(listBox.Visual);
listBox.X = 50;
listBox.Y = 50;
listBox.Width = 400;
listBox.Height = 200;

for(int i = 0; i < 20; i++)
{
    listBox.Items.Add(i);
}

ListBoxItems use ToString

By default each item in a ListBox creates a new ListBoxItem. The ListBoxItem calls ToString on the item. Some types, such as int have ToString methods which display expressive values.

Other types simply display their type when added. For example, the following code adds ListBoxItems which displays the type:

for (int i = 0; i < 20; i++)
{
    var cancellationToken = CancellationToken.None;
    listBox.Items.Add(cancellationToken);
}

This also includes adding Gum objects (such as Sprite). If a Sprite is added, the Sprite is not displayed, but rather the type of the Sprite is displayed, as shown in the following code:

for (int i = 0; i < 20; i++)
{
    var sprite = new SpriteRuntime();
    // sprite.ToString() returns the Sprite's Name
    sprite.Name = "Test Sprite";
    listBox.Items.Add(sprite);
}

ListBoxItems created by adding ints to an Items
An object's ToString is displayed by default ListBoxItems
Sprites (and all Gum objects) return their name when ToString is called