UXML element ObjectField

An ObjectField is an Editor-only element that lets users select a Unity object from a list of available objects. You can use it to select a Unity object to use as a reference, such as a material, a texture, a script, or a GameObjectThe fundamental object in Unity scenes, which can represent characters, props, scenery, cameras, waypoints, and more. A GameObject’s functionality is defined by the Components attached to it. More info
See in Glossary.

Note: To align an element with other fields in an 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 window, simply apply the .unity-base-field__aligned USS class to it. For more information, refer to BaseField.

Create an ObjectField

You can create an ObjectField with UI(User Interface) Allows a user to interact with your application. Unity currently supports three UI systems. More info
See in Glossary Builder, UXML, or C#.

To restrict the type of objects that can be selected, use the type property. In UXML, the format of the type property is Type Name, Type assembly name.

Tip: To find the assembly name of a type, use Debug.Log(theType.AssemblyQualifiedName); or find it in the type’s Script API page.

The following examples create an ObjectField for selecting a 2D texture:

UXML:

<ObjectField type="UnityEngine.Texture2D, UnityEngine.CoreModule" label="Select an object:" />

C#:

using UnityEditor.UIElements;
...
var objectField = new ObjectField();
objectField.objectType = typeof(Texture2D);
objectField.label = "Select an object:";

Example

The following UXML example creates an ObjectField:

<UXML xmlns="UnityEngine.UIElements" xmlns:uie="UnityEditor.UIElements">
    <uie:ObjectField label="UXML Field" name="the-uxml-field" />
</UXML>

The following C# example illustrates some of the customizable functionalities of the MinMaxSlider:

/// <sample>
// Get a reference to the field from UXML and assign a value to it.
var uxmlField = container.Q<ObjectField>("the-uxml-field");
uxmlField.value = new Texture2D(10, 10) { name = "new_texture" };

// Create a new field, disable it, and give it a style class.
var csharpField = new ObjectField("C# Field");
csharpField.SetEnabled(false);
csharpField.AddToClassList("some-styled-field");
csharpField.value = uxmlField.value;
container.Add(csharpField);

// Mirror the value of the UXML field into the C# field.
uxmlField.RegisterCallback<ChangeEvent<Object>>((evt) =>
{
    csharpField.value = evt.newValue;
});
/// </sample>

To try this example live in Unity, go to Window > UI Toolkit > Samples.

C# base class and namespace

C# class: ObjectField
Namespace: UnityEditor.UIElements
Base class: BaseField_1

Member UXML attributes

This element has the following member attributes:

Inherited UXML attributes

This element inherits the following attributes from its base class:

This element also inherits the following attributes from VisualElement:

USS classes

The following table lists all the C# public property names and their related USS selector.

You can also use the Matching Selectors section in the Inspector or the UI Toolkit Debugger to see which USS selectors affect the components of the VisualElement at every level of its hierarchy.

Additional resources

• UXML element VisualElement
• Assembly definitions