diff --git a/src/backend/NetAdmin/NetAdmin.Infrastructure/Extensions/ISelectExtensions.cs b/src/backend/NetAdmin/NetAdmin.Infrastructure/Extensions/ISelectExtensions.cs
index e648a120..bacc02cf 100644
--- a/src/backend/NetAdmin/NetAdmin.Infrastructure/Extensions/ISelectExtensions.cs
+++ b/src/backend/NetAdmin/NetAdmin.Infrastructure/Extensions/ISelectExtensions.cs
@@ -9,10 +9,11 @@ public static class ISelectExtensions
     ///     无锁无等待
     /// </summary>
     public static ISelect<T1> WithNoLockNoWait<T1>(this ISelect<T1> me)
+        where T1 : class
     {
         return me
             #if DBTYPE_SQLSERVER
-               .WithLock(SqlServerLock.NoLock | SqlServerLock.NoWait)
+                .WithLock(SqlServerLock.NoLock | SqlServerLock.NoWait)
             #endif
             ;
     }
@@ -21,11 +22,12 @@ public static class ISelectExtensions
     ///     无锁无等待
     /// </summary>
     public static ISelect<T1, T2> WithNoLockNoWait<T1, T2>(this ISelect<T1, T2> me)
+        where T1 : class //
         where T2 : class
     {
         return me
             #if DBTYPE_SQLSERVER
-               .WithLock(SqlServerLock.NoLock | SqlServerLock.NoWait)
+                .WithLock(SqlServerLock.NoLock | SqlServerLock.NoWait)
             #endif
             ;
     }
@@ -34,12 +36,13 @@ public static class ISelectExtensions
     ///     无锁无等待
     /// </summary>
     public static ISelect<T1, T2, T3> WithNoLockNoWait<T1, T2, T3>(this ISelect<T1, T2, T3> me)
+        where T1 : class //
         where T2 : class //
         where T3 : class
     {
         return me
             #if DBTYPE_SQLSERVER
-               .WithLock(SqlServerLock.NoLock | SqlServerLock.NoWait)
+                .WithLock(SqlServerLock.NoLock | SqlServerLock.NoWait)
             #endif
             ;
     }
@@ -48,13 +51,14 @@ public static class ISelectExtensions
     ///     无锁无等待
     /// </summary>
     public static ISelect<T1, T2, T3, T4> WithNoLockNoWait<T1, T2, T3, T4>(this ISelect<T1, T2, T3, T4> me)
+        where T1 : class //
         where T2 : class //
         where T3 : class //
         where T4 : class
     {
         return me
             #if DBTYPE_SQLSERVER
-               .WithLock(SqlServerLock.NoLock | SqlServerLock.NoWait)
+                .WithLock(SqlServerLock.NoLock | SqlServerLock.NoWait)
             #endif
             ;
     }
@@ -63,6 +67,7 @@ public static class ISelectExtensions
     ///     无锁无等待
     /// </summary>
     public static ISelect<T1, T2, T3, T4, T5> WithNoLockNoWait<T1, T2, T3, T4, T5>(this ISelect<T1, T2, T3, T4, T5> me)
+        where T1 : class //
         where T2 : class //
         where T3 : class //
         where T4 : class //
@@ -70,7 +75,7 @@ public static class ISelectExtensions
     {
         return me
             #if DBTYPE_SQLSERVER
-               .WithLock(SqlServerLock.NoLock | SqlServerLock.NoWait)
+                .WithLock(SqlServerLock.NoLock | SqlServerLock.NoWait)
             #endif
             ;
     }
@@ -79,6 +84,7 @@ public static class ISelectExtensions
     ///     无锁无等待
     /// </summary>
     public static ISelect<T1, T2, T3, T4, T5, T6> WithNoLockNoWait<T1, T2, T3, T4, T5, T6>(this ISelect<T1, T2, T3, T4, T5, T6> me)
+        where T1 : class //
         where T2 : class //
         where T3 : class //
         where T4 : class //
@@ -87,7 +93,7 @@ public static class ISelectExtensions
     {
         return me
             #if DBTYPE_SQLSERVER
-               .WithLock(SqlServerLock.NoLock | SqlServerLock.NoWait)
+                .WithLock(SqlServerLock.NoLock | SqlServerLock.NoWait)
             #endif
             ;
     }