VisualElement.Add

Parameters

Description

Adds an element to the contentContainer of this element.

Adds the child element to the hierarchy if this element is the content container; otherwise, adds the child element to the content container of this element.
Exits without performing any action if the child element is null.
Throws an InvalidOperationException if the contentContainer is null.

The following example shows how to add a Button to a visual element.

using UnityEngine;
using UnityEngine.UIElements;

[UxmlElement]
public partial class MyElement : VisualElement
{
    public MyElement()
    {
        var button = new Button { name = "my-button", text = "Click me!" };
        button.clicked += ButtonClicked;

        // Add the button to the visual element
        Add(button);
    }

    void ButtonClicked()
    {
        Debug.Log("Button clicked!");
    }
}