main.txt

1、OptionExplicit定義查詢字段的窗體級變量定義查詢的字段窗體變量DimsfieldAsString查詢的關(guān)鍵詞DimseachtextAsString查詢函數(shù)定義1、桉書號查詢則采用具體查詢辦法2、按書名查詢則采用模糊查詢辦法Functionopen_seach(table_nameAsStringsfieldAsStringseachtextAsString)AsIntegerDimsqlstrAsStringDimstrA

2、sString建立數(shù)據(jù)庫連接Setcon=NewADODB.ConnectionSetrst=NewADODB.Recdsetcon.CursLocation=adUseClientsqlstr=“Provider=Microsoft.Jet.OLEDB.4.0““DataSource=“App.Path“dataComputerBookmanage.mdb““PersistSecurityInfo=False“con.Opensqls

3、tr查詢辦法選擇IfOption1.Value=TrueThenstr=“from“&table_name&“where“&sfield&“=“&seachtext&““Elsestr=“from“&table_name&“where“&sfield&“l(fā)ike“&Trim(“%“&Text1.Text&“%“)&““EndIfIfOption3.Value=TrueThenstr=“from“&table_name&“where“&s

4、field&“=“&seachtext&““Elsestr=“from“&table_name&“where“&sfield&“l(fā)ike“&Trim(“%“&Text1.Text&“%“)&““EndIfrst.OpenstrconadOpenDynamicadLockOptimisticrst.RequeryIfrst.RecdCount0Thenopen_seach=1返回一個值1代表有查詢結(jié)果Elseopen_seach=0返回一

5、個值0代表沒有查詢結(jié)果EndIfEndFunctionPrivateSubCheck4_Click()選擇查詢的字段CaseTabStrip1.edItemCase“圖書信息瀏覽“:sfield=“[出版社]“EndEndSubPrivateSubComm1_Click()Ifrst.BOF=TrueThenfrmMsg.ShowIfText1.Text=““ThenfrmMsg.ShowfrmMsg.notice.Visible=Tr

6、uefrmMsg.Text1.Text=“請輸入查詢內(nèi)容！“Text1.SetFocusExitSubEndIfseachtext=Trim(Text1.Text)ret=open_seach(tablenamesfieldseachtext)Ifret=0ThenfrmMsg.ShowfrmMsg.err.Visible=TruefrmMsg.Text1.Text=“對不起，沒有你要的記錄!“Option1.Value=FalseOp

7、tion2.Value=FalseText1.Text=““rst.CloseSetrst=NothingSetDataGrid1.DataSource=rstComm1.Enabled=False上一條下一條按鈕為灰Comm2.Enabled=FalseComm4.Caption=“查詢“ExitSubEndIfComm1.Enabled=TrueComm2.Enabled=TrueSetDataGrid1.DataSource=rs

8、tText1.Text=““Option1.Value=FalseOption2.Value=FalseComm4.Caption=“查詢“EndIfEndSubPrivateSubDataGrid1_Click()Callconnect_dbopen_connection(“book“)連接book表tablename=“book“Ifprivilege=1Then如果只是普通用戶無法查詢員工信息frmMsg.ShowfrmMsg.e