diff --git a/Rs.DeweyTester/Data/DataRecords.cs b/Rs.DeweyTester/Data/DataRecords.cs
index d6623da..9ce0af7 100644
--- a/Rs.DeweyTester/Data/DataRecords.cs
+++ b/Rs.DeweyTester/Data/DataRecords.cs
@@ -1,4 +1,5 @@
-using System;
+using Rs.MotionPlat.Commom;
+using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Data;
@@ -29,6 +30,11 @@ namespace Rs.MotionPlat.Data
         private void btnSearch_Click(object sender, EventArgs e)
         {
             string querySql = "select * from records where 1=1";
+            if(!dateTimePicker1.Checked && string.IsNullOrEmpty(txtSn.Text))
+            {
+                Msgbox.ShowTipDialog(EButtonType.Ok, "Date or Sn cannot be empty at the same time");
+                return;
+            }
             if(dateTimePicker1.Checked)
             {
                 querySql += $" and (PlaceTime > '{dateTimePicker1.Value.Date.AddMilliseconds(1)}' and PlaceTime < '{dateTimePicker1.Value.Date.AddDays(1).AddMilliseconds(-1)}')";