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Description

The smallest number of elements in the array across all target objects. (Read Only)

using UnityEditor;
using UnityEngine;
public class MinArraySizeExample : ScriptableObject
{
    public int[] m_data;
    [MenuItem("Example/SerializedProperty MinArraySize Example")]
    static void TestMethod()
    {
        const int largeArraySize = 100; // Larger than the default maxArraySizeForMultiEditing value of 64
        MinArraySizeExample obj1 = ScriptableObject.CreateInstance<MinArraySizeExample>();
        obj1.m_data = new int[largeArraySize];
        for (int i = 0; i < largeArraySize; i++)
            obj1.m_data[i] = i;
        // Second object with its own copy of the large array
        MinArraySizeExample obj2 = ScriptableObject.CreateInstance<MinArraySizeExample>();
        obj2.m_data = obj1.m_data;
        // Create serialized object for manipulating both objects
        SerializedObject serializedObject = new SerializedObject(new Object[] { obj1, obj2 });
        SerializedProperty property = serializedObject.FindProperty("m_data");
        // arraySize returns 0 but minArraySize returns largeArraySize
        Debug.LogFormat("Array Size: {0}\nMin Array Size: {1}\nMax Array Size: {2}",
            property.arraySize, property.minArraySize, serializedObject.maxArraySizeForMultiEditing);
        // Any call to GetArrayElementAtIndex() at this point would fail
        // Extend the max permitted array size
        serializedObject.maxArraySizeForMultiEditing = property.minArraySize;
        // Now arraySize returns largeArraySize, and the elements can be retrieved
        Debug.LogFormat("New Array Size: {0}, Last element: {1}", property.arraySize, property.GetArrayElementAtIndex(largeArraySize - 1).intValue);
    }
}