Worksheet_Change event

I want to show error message & delete the content entered in A2; when Range A1 is blank & User enter value in A2
i try below code but its not working properly. it went in loop.
and is there any way where i can hide multiple rows in single line statement
like Union(Rows("3:4"),Rows("9:10").....
i will appreciate any help on this

Code:

---

Private Sub Worksheet_Change(ByVal Target As Range)
If Target.Address = "$A$2" And Range("A1").Value = "" Then
Temp = MsgBox("Error: ", vbInformation, "Warning")
Range("A2").ClearContents
Range("A1").Select
End If
End Sub

---

Hi,

You need to set the "Application.EnableEvents" to False
prior to the change and after the change to True.

Code:

---

Private Sub Worksheet_Change(ByVal Target As Range)
If Target.Address = "$A$2" And Range("A1").Text = "" Then

Temp = MsgBox("Error: ", vbInformation, "Warning")
Application.EnableEvents = False
Range("A2").ClearContents
Range("A1").Select
Application.EnableEvents = True
End If
End Sub

---

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thanks a lot Charles..! it works perfect...!