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Manual: Create a custom control with two attributes

Use Toggle to create a conditional UI

Create a slide toggle custom control

Version: 2023.2+

This example demonstrates how to create a simple custom control with two attributes.

This example creates a custom control called MyElement with two attributes and exposes it to UXML and UI Builder. This example also shows how to add a custom control to a UI in the UI Builder.

You can find the completed files that this example creates in this GitHub repository.

This guide is for developers who are familiar with Unity, UI Toolkit, and C# scripting. Before you start, get familiar with the following:

• UXML
• UI Builder

To create a new custom control class in C#, inherit it from the VisualElement class. This allows you to create and use this element in C#, but won’t automatically expose it in UXML and UI Builder. To expose it, add the UxmlElement attribute. To expose the attributes, add the UxmlAttribute attribute to each property that you want to be visible in UXML and the UI Builder.

1. Create a Unity project with any template.
2. In the Assets folder, create a C# script named MyElement.cs with the following content:

using UnityEngine.UIElements;

[UxmlElement]
partial class MyElement : VisualElement
{
    [UxmlAttribute]
    public string myString { get; set; } = "default_value";

    [UxmlAttribute]
    public int myInt { get; set; } = 2;
}

1. Create a UXML file with any name you want.
2. Double-click the UXML file to open it in the UI Builder.
3. In the Library section of the UI Builder, select Project > Custom Controls (C#) > MyElement.
4. Drag MyElement to the Hierarchy window.
5. To see the custom attributes for MyElement, go to the InspectorA Unity window that displays information about the currently selected GameObject, asset or project settings, allowing you to inspect and edit the values. More info
   See in Glossary tab of MyElement:

• Create custom controls

Use Toggle to create a conditional UI

Create a slide toggle custom control

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