diff --git a/src/DotNetCore.CAP.MySql/IDbConnectionExtensions.cs b/src/DotNetCore.CAP.MySql/IDbConnection.Extensions.cs
similarity index 92%
rename from src/DotNetCore.CAP.MySql/IDbConnectionExtensions.cs
rename to src/DotNetCore.CAP.MySql/IDbConnection.Extensions.cs
index e75527f..f203025 100644
--- a/src/DotNetCore.CAP.MySql/IDbConnectionExtensions.cs
+++ b/src/DotNetCore.CAP.MySql/IDbConnection.Extensions.cs
@@ -1,10 +1,13 @@
-using System;
+// Copyright (c) .NET Core Community. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+using System;
 using System.ComponentModel;
 using System.Data;
 
 namespace DotNetCore.CAP.MySql
 {
-    internal static class IDbConnectionExtensions
+    internal static class DbConnectionExtensions
     {
         public static int ExecuteNonQuery(this IDbConnection connection, string sql, IDbTransaction transaction = null,
             params object[] sqlParams)
diff --git a/src/DotNetCore.CAP.PostgreSql/IDbConnectionExtensions.cs b/src/DotNetCore.CAP.PostgreSql/IDbConnection.Extensions.cs
similarity index 92%
rename from src/DotNetCore.CAP.PostgreSql/IDbConnectionExtensions.cs
rename to src/DotNetCore.CAP.PostgreSql/IDbConnection.Extensions.cs
index b94f7f4..0a5ac1f 100644
--- a/src/DotNetCore.CAP.PostgreSql/IDbConnectionExtensions.cs
+++ b/src/DotNetCore.CAP.PostgreSql/IDbConnection.Extensions.cs
@@ -1,10 +1,13 @@
-using System;
+// Copyright (c) .NET Core Community. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+using System;
 using System.ComponentModel;
 using System.Data;
 
 namespace DotNetCore.CAP.PostgreSql
 {
-    internal static class IDbConnectionExtensions
+    internal static class DbConnectionExtensions
     {
         public static int ExecuteNonQuery(this IDbConnection connection, string sql, IDbTransaction transaction = null,
             params object[] sqlParams)
diff --git a/src/DotNetCore.CAP.SqlServer/IDbConnectionExtensions.cs b/src/DotNetCore.CAP.SqlServer/IDbConnection.Extensions.cs
similarity index 92%
rename from src/DotNetCore.CAP.SqlServer/IDbConnectionExtensions.cs
rename to src/DotNetCore.CAP.SqlServer/IDbConnection.Extensions.cs
index 0853ff3..ba7dbce 100644
--- a/src/DotNetCore.CAP.SqlServer/IDbConnectionExtensions.cs
+++ b/src/DotNetCore.CAP.SqlServer/IDbConnection.Extensions.cs
@@ -1,10 +1,13 @@
-using System;
+// Copyright (c) .NET Core Community. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+using System;
 using System.ComponentModel;
 using System.Data;
 
 namespace DotNetCore.CAP.SqlServer
 {
-    internal static class IDbConnectionExtensions
+    internal static class DbConnectionExtensions
     {
         public static int ExecuteNonQuery(this IDbConnection connection, string sql, IDbTransaction transaction = null,
             params object[] sqlParams)