添加get;

Api/Utility/PluginConfig.cs

@@ -31,11 +31,15 @@ namespace Milimoe.FunGame.Core.Api.Utility
         /// </summary>
         /// <param name="key"></param>
         /// <returns></returns>
-        public new object this[string key]
+        public new object? this[string key]
         {
-            set => Add(key, value);
+            get => GetValue(key);
+            set
+            {
+                if (value != null) Add(key, value);
+            }
         }
-        
+
         /// <summary>
         /// 如果保存了对象，请使用此方法转换
         /// </summary>
@@ -52,7 +56,21 @@ namespace Milimoe.FunGame.Core.Api.Utility
                 }
             }
         }
-        
+
+        /// <summary>
+        /// 获取指定key的value
+        /// </summary>
+        /// <param name="key"></param>
+        /// <returns></returns>
+        public object? GetValue(string key)
+        {
+            if (base.TryGetValue(key, out object? value) && value != null)
+            {
+                return value;
+            }
+            return null;
+        }
+
         /// <summary>
         /// 使用泛型获取指定key的value
         /// </summary>

Docs/FunGame.Core.xml

@@ -828,6 +828,13 @@
             <typeparam name="T"></typeparam>
             <param name="key"></param>
         </member>
+        <member name="M:Milimoe.FunGame.Core.Api.Utility.PluginConfig.GetValue(System.String)">
+            <summary>
+            获取指定key的value
+            </summary>
+            <param name="key"></param>
+            <returns></returns>
+        </member>
         <member name="M:Milimoe.FunGame.Core.Api.Utility.PluginConfig.Get``1(System.String)">
             <summary>
             使用泛型获取指定key的value