diff --git a/Apewer/Class.cs b/Apewer/Class.cs
index 7e29505..a5fe390 100644
--- a/Apewer/Class.cs
+++ b/Apewer/Class.cs
@@ -123,26 +123,25 @@ namespace Apewer
         {
             if (instance == null) return false;
 
-            var boolean = instance as Class<bool>;
-            if (boolean != null) return boolean.Value;
+            // var boolean = instance as Class<bool>;
+            // if (boolean != null) return boolean.Value;
 
-            var text = instance as Class<string>;
-            if (text != null) return !string.IsNullOrEmpty(text.Value);
+            // var text = instance as Class<string>;
+            // if (text != null) return !string.IsNullOrEmpty(text.Value);
 
-            return instance != null;
+            return true;
         }
 
-        /// <summary>从 <see cref="Class{T}"/> 到 T 的隐式转换。</summary>
-        public static implicit operator T(Class<T> instance)
-        {
-            if (instance == null) return default(T);
-
-            if (typeof(T).Equals(typeof(bool))) return instance.Value;
-            return instance.Value;
-        }
+        // /// <summary>从 <see cref="Class{T}"/> 到 T 的隐式转换。</summary>
+        // public static implicit operator T(Class<T> instance)
+        // {
+        //     if (instance == null) return default(T);
+        //     if (typeof(T).Equals(typeof(bool))) return instance.Value;
+        //     return instance.Value;
+        // }
 
-        /// <summary>从 T 到 <see cref="Class{T}"/> 的隐式转换。</summary>
-        public static implicit operator Class<T>(T value) => new Class<T>(value);
+        // /// <summary>从 T 到 <see cref="Class{T}"/> 的隐式转换。</summary>
+        // public static implicit operator Class<T>(T value) => new Class<T>(value);
 
         #endregion
 
diff --git a/Apewer/ClockUtility.cs b/Apewer/ClockUtility.cs
index a3b4a4a..9dcde54 100644
--- a/Apewer/ClockUtility.cs
+++ b/Apewer/ClockUtility.cs
@@ -16,7 +16,7 @@ namespace Apewer
         /// <summary>尝试转换内容为 DateTime 实例。</summary>
         public static Class<DateTime> DateTime(object value)
         {
-            if (value is DateTime dt) return dt;
+            if (value is DateTime dt) return new Class<DateTime>(dt);
             if (value.IsNull()) return null;
 
             try
diff --git a/Apewer/_Extensions.cs b/Apewer/_Extensions.cs
index b061e20..2fb8ae7 100644
--- a/Apewer/_Extensions.cs
+++ b/Apewer/_Extensions.cs
@@ -29,6 +29,13 @@ public static class Extensions
     /// <summary>是默认值。</summary>
     public static bool IsDefault(this object @this) => RuntimeUtility.IsDefault(@this);
 
+    #region Class
+
+    /// <summary>用 <see cref="Apewer.Class{T}"/> 装箱。</summary>
+    public static Class<T> Class<T>(this T value) => new Class<T>(value);
+
+    #endregion
+
     #region Class Utility
 
     /// <summary>调用 Get 方法。</summary>