From e52bc821e10d219f94a5defa27ddce02cb584278 Mon Sep 17 00:00:00 2001
From: maliming <malimings@gmail.com>
Date: Thu, 2 Jan 2025 12:08:51 +0800
Subject: [PATCH] Avoid `HandlerFactories` being changed during iteration.

Resolve #20625
---
 .../src/Volo.Abp.EventBus/Volo/Abp/EventBus/EventBusBase.cs     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/framework/src/Volo.Abp.EventBus/Volo/Abp/EventBus/EventBusBase.cs b/framework/src/Volo.Abp.EventBus/Volo/Abp/EventBus/EventBusBase.cs
index ef5c5cdabc..7c60d69063 100644
--- a/framework/src/Volo.Abp.EventBus/Volo/Abp/EventBus/EventBusBase.cs
+++ b/framework/src/Volo.Abp.EventBus/Volo/Abp/EventBus/EventBusBase.cs
@@ -135,7 +135,7 @@ public abstract class EventBusBase : IEventBus
     {
         await new SynchronizationContextRemover();
 
-        foreach (var handlerFactories in GetHandlerFactories(eventType))
+        foreach (var handlerFactories in GetHandlerFactories(eventType).ToList())
         {
             foreach (var handlerFactory in handlerFactories.EventHandlerFactories)
             {