From 5609509e347683d31f99a3f72f3b5c7ffc4ff3c1 Mon Sep 17 00:00:00 2001
From: oneRain <onerain88@gmail.com>
Date: Wed, 27 May 2020 12:46:01 +0800
Subject: [PATCH] =?UTF-8?q?chore:=20=E5=AE=8C=E5=96=84=20Dictionary=20?=
 =?UTF-8?q?=E5=90=88=E5=B9=B6?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Realtime/Internal/Controller/LCIMConversationController.cs  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Realtime/Realtime/Internal/Controller/LCIMConversationController.cs b/Realtime/Realtime/Internal/Controller/LCIMConversationController.cs
index 1f23ead..68798b0 100644
--- a/Realtime/Realtime/Internal/Controller/LCIMConversationController.cs
+++ b/Realtime/Realtime/Internal/Controller/LCIMConversationController.cs
@@ -52,7 +52,7 @@ namespace LeanCloud.Realtime.Internal.Controller {
                 attrs["name"] = name;
             }
             if (properties != null) {
-                attrs = properties.Union(attrs)
+                attrs = properties.Union(attrs.Where(kv => !properties.ContainsKey(kv.Key)))
                     .ToDictionary(k => k.Key, v => v.Value);
             }
             conv.Attr = new JsonObjectMessage {