diff --git a/C#/source/Yitter.IdGenTest/GenTest.cs b/C#/source/Yitter.IdGenTest/GenTest.cs
index 2f1a7cf..8113467 100644
--- a/C#/source/Yitter.IdGenTest/GenTest.cs
+++ b/C#/source/Yitter.IdGenTest/GenTest.cs
@@ -38,7 +38,7 @@ namespace Yitter.OrgSystem.TestA
             {
                 var id = IdGen.NewLong();
                 //ids.Add(id, i);
-                idList.Add(id);
+                //idList.Add(id);
             }
 
             DateTime end = DateTime.Now;