Health/Assets/Scripts/UI/UIPanelBase.cs

using System;
using System.Linq;
using UnityEngine.UI;

public abstract class UIPanelBase : UIBase
{
    private void OnEnable()
    {
        Bind();
    }

    private void OnDisable()
    {
        UnBind();
    }

    protected void Bind()
    {
        Type type = GetType();
        var methods = type.GetMethods();

        foreach (var method in methods)
        {
            var attributes = method.GetCustomAttributes(typeof(UIButtonOnClickAttribute), true);
            if (attributes.Length == 0)
                continue;

            var attribute = attributes[0] as UIButtonOnClickAttribute;

            var btns = transform.GetComponentsInChildren<Button>().ToList();
            var button = btns.Find(btns => btns.name == attribute.ButtonName);
            if (button == null)
                continue;
            button.onClick.AddListener(() => { method.Invoke(this, null); });
        }
    }

    protected void UnBind()
    {
        Type type = GetType();
        var methods = type.GetMethods();

        foreach (var method in methods)
        {
            var attributes = method.GetCustomAttributes(typeof(UIButtonOnClickAttribute), true);
            if (attributes.Length == 0)
                continue;

            var attribute = attributes[0] as UIButtonOnClickAttribute;

            var btns = transform.GetComponentsInChildren<Button>().ToList();
            var button = btns.Find(btns => btns.name == attribute.ButtonName);
            if (button == null)
                continue;
            button.onClick.RemoveListener(() => { method.Invoke(this, null); });
        }
    }
}
public class UIButtonOnClickAttribute : Attribute
{
    public string ButtonName { get; private set; }
    public UIButtonOnClickAttribute(string button)
    {
        ButtonName = button;
    }
}