Version: 2021.3
  • C#


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public object managedReferenceValue;


The object assigned to a field with SerializeReference attribute.

For use when propertyType is SerializedPropertyType.ManagedReference.

The value object must be a type that is compatible with the base type of the managed reference field (that is, the managed reference field that the serialized property is referencing).

Additional resources: SerializeReference, propertyType, SerializedPropertyType.ManagedReference.

using System;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;
using Object = UnityEngine.Object;

public class SerializedPropertyManagedReferenceValueExample : ScriptableObject { [Serializable] public class Item { public int m_data = 1;

public int DoCalculation() { // Could be querying some external data, or other calculation that cannot be // made entirely based on the local object state m_data++; return m_data * 2; } }

[SerializeReference] public Item m_Item;

[MenuItem("Example/SerializedProperty ManagedReferenceValue Example1")] static void TestMethod1() { var scriptableObject = ScriptableObject.CreateInstance<SerializedPropertyManagedReferenceValueExample>(); var serializedObject = new SerializedObject(scriptableObject);

// Allocate and assign an object to the m_Item field via managedReferenceValue var referenceProperty = serializedObject.FindProperty("m_Item"); referenceProperty.managedReferenceValue = new Item();

// Change a value of the object's field referenceProperty.FindPropertyRelative("m_data").intValue = 99;

// Apply the change back to the "live" object serializedObject.ApplyModifiedProperties();

// Will print "Value of m_data: 99" Debug.Log("Value of m_data: " + scriptableObject.m_Item.m_data); }

[MenuItem("Example/SerializedProperty ManagedReferenceValue Example2")] static void TestMethod2() { var scriptableObject = ScriptableObject.CreateInstance<SerializedPropertyManagedReferenceValueExample>(); scriptableObject.m_Item = new Item();

var serializedObject = new SerializedObject(scriptableObject); var referenceProperty = serializedObject.FindProperty("m_Item");

// The "live" referenced object can be accessed so we can call a method on it (referenceProperty.managedReferenceValue as Item).DoCalculation();

// The serialized state inside the SerializedObject is now out of data with the change // of m_data on the live object, but can be brought back in sync by calling Update() var serializedDataValue = serializedObject.FindProperty("m_Item.m_data").intValue; serializedObject.Update(); var updatedSerializedDataValue = serializedObject.FindProperty("m_Item.m_data").intValue;

// Will print: "Value of m_data before update: 1 and after update: 2" Debug.Log("Value of m_data before update: " + serializedDataValue + " and after update: " + updatedSerializedDataValue); } }