diff --git a/tests/examples/C#/taosdemo/taosdemo.cs b/tests/examples/C#/taosdemo/taosdemo.cs
index df52acc99dcfeffacbc896d27b81efa66b45fa5f..2d78418e0ab8599f87a544b833b9b6bbd0b48ee7 100644
--- a/tests/examples/C#/taosdemo/taosdemo.cs
+++ b/tests/examples/C#/taosdemo/taosdemo.cs
@@ -650,6 +650,7 @@ namespace TDengineDriver
             tester.CloseConnection();
 
             Console.WriteLine("End.");
+            CleanAndExitProgram(0);
         }
 
         public class InsertDataThread