我做的会员卡管理系统

ImportsSystem.Data.SqlClientImportsSystem.DateTimePartialClassmemberInheritsSystem.Web.UI.UserControlDimsysAsNewSySDB'新增ProtectedSubButton1_Click(ByValsenderAsObject,ByValeAsSystem.EventArgs)HandlesButton1.ClickIfMe.txt_num.Text=""ThenResponse.Write("alert