Partial Class login_ChangePW Inherits System.Web.UI.Page Protected Sub Page_Load(sender As Object, e As EventArgs) btn_submitpw.Enabled = False End Sub Protected Sub txt_Pw_WH_TextChanged(sender As Object, e As EventArgs) If reqPasswtxt.IsValid AndAlso reqPassw1txt.IsValid AndAlso confirmPasswordReq.IsValid Then btn_submitpw.Enabled = True Else btn_submitpw.Enabled = False End If End Sub Protected Sub btn_submitpw_Click(sender As Object, e As EventArgs) Dim tempstr As String = "" If txt_Pw.Text = tempstr Then End If End Sub End Class