complete the branch

HandyControlDemo/Data/Model/ChatInfoModel.cs

@@ -1,9 +1,17 @@
-namespace HandyControlDemo.Data
+using HandyControl.Data;
+
+namespace HandyControlDemo.Data
 {
-    public class ChatInfoModel
+    public struct ChatInfoModel
     {
-        public string Message { get; set; }
+        public object Message { get; set; }
 
         public string SenderId { get; set; }
+
+        public ChatRoleType Role { get; set; }
+
+        public ChatMessageType Type { get; set; }
+
+        public object Enclosure { get; set; }
     }
 }