Create a main menu item that saves the Scene

The official Unity SaveCurrentModifiedScenesIfUserWantsTo usage example adds a menu item Examples to the main menu, and there is a menu Save current Scene(s) if require under the menu item. This method cannot store Scene in Play mode.

// Add an editor menu item that enables Scenes to be saved or not,
// This example adds the editor extension into an Examples menu.

using UnityEngine;
using UnityEditor;
using UnityEditor.SceneManagement;

public class ExampleClass : MonoBehaviour
{
    
    
    [MenuItem("Examples/Save current Scene(s) if required")]
    static void MaybeSaveScenes()
    {
    
    
        EditorSceneManager.SaveOpenScenes();
        if (EditorSceneManager.SaveCurrentModifiedScenesIfUserWantsTo())
        {
    
    
            Debug.Log("Continue... (Save or Don't Save was clicked)");
        }
        else
        {
    
    
            Debug.Log("Abort... (Cancel was clicked)");
        }
    }
}