－、用DAO控件連接數(shù)據(jù)庫(kù)

1.與Access2000數(shù)據(jù)庫(kù)連接

Private Sub Command1_Click()

'也可直接在控件屬性中設(shè)置以下各項(xiàng)但在控件屬性中不能寫(xiě)入密碼

'只有在數(shù)據(jù)數(shù)沒(méi)有密碼的情況下可以省略

Data1.Refresh

Data1.Connect = "Access 2000;"

Data1.DatabaseName = App. Path +"chncmadb.mdb"

'數(shù)據(jù)庫(kù)沒(méi)有密碼此句可省

Data1.Connect = ";pwd=123456"

'Data1.RecordSource ="耕地資源管理單元屬性數(shù)據(jù)表2004"　

Data1.RecordSource = "select * from耕地資源管理單元屬性數(shù)據(jù)表2004"

Data1.Refresh

’move后才能正確顯示記錄個(gè)數(shù)

End Sub

2.與沒(méi)有密碼的DBF文件數(shù)據(jù)庫(kù)連接

Private Sub Command2_Click()

Data1.Connect = "dBASE III;"

Data1.DatabaseName = App. Path

' Data1.RecordSource ="DBF"

Data1.RecordSource = "select * fromdbf"

Data1.Refresh

’move后才能正確顯示記錄個(gè)數(shù)

End Sub

3.與沒(méi)有密碼的Excel文件數(shù)據(jù)庫(kù)連接

Private Sub Command3_Click()

Data1.Connect = "Excel 8.0;"

Data1.DatabaseName = App.Path &"EXcel.xls"

Data1.RecordSource = "select *from [EXcel.xls]"

Data1.Refresh

’move后才能正確顯示記錄個(gè)

End Sub

二、用DAO代碼連接數(shù)據(jù)庫(kù)

'在使用DAO對(duì)象前應(yīng)選定VisualBasic菜單下的[工程]中的引用了菜單中的[Microsoft DAO 3.6 ObjectLibrary]選項(xiàng)，或其它版本

1.DAO代碼與Access數(shù)據(jù)庫(kù)連接

Private Sub Command1_Click()

Dim Db As Database

Dim Rs As Recordset

'以共享、讀寫(xiě)方式打開(kāi)'如果無(wú)密碼最后一個(gè)參數(shù)可以不要

Set　Db= OpenDatabase(App.Path &"chncmadb.mdb", False, False, ";pwd=123456")

'不需要move來(lái)更新記錄個(gè)數(shù)

'Set Rs =Db.OpenRecordset("耕地資源管理單元屬性數(shù)據(jù)表2004")

'需要move來(lái)更新記錄個(gè)數(shù)

Set Rs = Db.OpenRecordset("select * from[耕地資源管理單元屬性數(shù)據(jù)表2004]")

If Rs.RecordCount > 0 Then

Rs.MoveLast

Rs.MoveFirst

End If

End Sub

2.DAO代碼與沒(méi)有密碼的DBF文件數(shù)據(jù)庫(kù)連接

Private Sub Command2_Click()

Dim Db As Database

Dim Rs As Recordset

'以共享、讀寫(xiě)方式打開(kāi)

Set Db = OpenDatabase(App.Path, False, False,"dbaseIII;")

'不需要move來(lái)更新記錄個(gè)數(shù)

'Set Rs = Db.OpenRecordset("DBF")

’需要move來(lái)更新記錄個(gè)數(shù)

Set Rs = Db.OpenRecordset("select * from[DBF]")

If Rs.RecordCount > 0 Then

Rs.MoveLast

Rs.MoveFirst

End If

End sub

3.'DAO代碼與沒(méi)有密碼的Excel文件數(shù)據(jù)庫(kù)連接

Private Sub Command3_Click()

Dim Db As Database

Dim Rs As Recordset

'以共享、讀寫(xiě)方式打開(kāi)'如果無(wú)密碼最后一個(gè)參數(shù)可以不要

Set Db = OpenDatabase(App.Path &"EXcel.xls", False, False, "Excel 8.0;")

'不需要move來(lái)更新記錄個(gè)數(shù)

' Set Rs = Db.OpenRecordset("EXcel.xls")'表格中的工作目錄sheet

'需要move來(lái)更新記錄個(gè)數(shù)

Set Rs = Db.OpenRecordset("select * from[EXcel.xls]") '表格中的工作目錄sheet'

If Rs.RecordCount > 0 Then

Rs.MoveLast

Rs.MoveFirst

End If

End Sub

三、用ADO控件連接數(shù)據(jù)庫(kù)

'也可直接在控件屬性中設(shè)置以下各項(xiàng)

1.ADO控件與Access2000數(shù)據(jù)庫(kù)連接

Private Sub Command1_Click()

'連接有密碼的Access數(shù)據(jù)庫(kù)

'Adodc1.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;DataSource=" & App.Path & "chncmadb1.mdb;Jet OLEDB:DataBasePASSWORD=123456"

'連接沒(méi)有密碼的Access數(shù)據(jù)庫(kù)

Adodc1.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;DataSource=" & App.Path & "chncmadb.mdb;Persist SecurityInfo=False"

'Adodc1.RecordSource ="[耕地資源管理單元屬性數(shù)據(jù)表2004]"

Adodc1.RecordSource = "select * from[耕地資源管理單元屬性數(shù)據(jù)表2004]"

Adodc1.Refresh

SetDataGrid1.DataSource = Adodc1

DataGrid1.Refresh

End Sub

2.'ADO控件與DBF表連接

Private Sub Command2_Click()

'Adodc1.ConnectionString = "Provider=MSDASQL.1;Persist SecurityInfo=False;Data Source=dBASE Files;DBQ=" & App.Path &";SourceType=DBF;"

'Adodc1.ConnectionString = "Provider=MSDASQL.1;Persist SecurityInfo=False;Extended Properties=DSN=Visual FoxProTables;UID=;SourceDB=”& app.path&”;SourceType=DBF;Exclusive=No;BackgroundFetch=Yes;Collate=Machine;Null=Yes;Deleted=Yes;"

'Adodc1.ConnectionString = "Provider=MSDASQL.1;Persist SecurityInfo=False;Extended Properties=DSN=dBASE Files;DBQ=”& app.path&”;;DefaultDir=”& app.path&”;DriverId=533;MaxBufferSize=2048;PageTimeout=5;"

'能使表名長(zhǎng)度不受限制

Adodc1.ConnectionString = "Provider=MSDASQL.1;Driver=MicrosoftVisual Foxpro Driver;SourceDB=" & App.Path &";SourceType=DBF;Locale Identifier=2052"

'Adodc1.RecordSource = "[DBF1]"

Adodc1.RecordSource = "select * from DBF1"

Adodc1.Refresh

SetDataGrid1.DataSource = Adodc1

DataGrid1.Refresh

End Sub

3.'ADO控件與Excel表連接

Private Sub Command3_Click()

'下面一句測(cè)試未能通過(guò)

'Adodc1.ConnectionString = "DataProvider=MSDASQL.1;driver=Microsoft Excel Driver *.xls);DBQ=" &App.Path & "EXcel.xls"

'Adodc1.ConnectionString="Provider=MSDASQL.1;Persist SecurityInfo=False;Extended Properties=DSN=Excel Files;DBQ=" & App.Path& "EXcel.xls;DefaultDir=”&app.path&”;DriverId=790;MaxBufferSize=2048;PageTimeout=5;"

Adodc1.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;PersistSecurity Info=False;Data Source=" & App.Path &"EXcel.xls;Extended Properties='Excel 8.0;HDR=Yes'"

'Adodc1.RecordSource = "[EXcel.xls]"

Adodc1.RecordSource = "select * from [EXcel.xls]"

Adodc1.Refresh

SetDataGrid1.DataSource = Adodc1

DataGrid1.Refresh

End Sub

4.'ADO控件與Oracle數(shù)據(jù)庫(kù)連接

Private Sub Command4_Click()

'Adodc1.ConnectionString ="Provider=MSDAORA.1;Password=chncmadb;User ID=chncmadb;DataSource=towebserver;Persist Security Info=True"

Adodc1.ConnectionString="Provider=OraOLEDB.Oracle.1;Password=chncmadb;PersistSecurity Info=True;User ID=chncmadb;DataSource=towebserver"

'Adodc1.RecordSource = "T320481TR012004"

'表名不能加方括號(hào)

Adodc1.RecordSource = "select * from T320481TR012004"

Adodc1.Refresh

SetDataGrid1.DataSource = Adodc1

DataGrid1.Refresh

End Sub

5.'ADO控件與SQLserver數(shù)據(jù)庫(kù)連接

'未測(cè)試

Private Sub Command5_Click()

Adodc1.ConnectionString = "Provider=SQLOLEDB.1;Password=111;PersistSecurity Info=True;User ID=111;Initial Catalog=111;DataSource=111"

'Adodc1.RecordSource = "T320481TR012004"

Adodc1.RecordSource = "select * from T320481TR012004"

Adodc1.Refresh

SetDataGrid1.DataSource = Adodc1

DataGrid1.Refresh

End Sub

四、用ADO代碼連接數(shù)據(jù)庫(kù)

'在使用ADO對(duì)象前應(yīng)選定VisualBasic菜單下的[工程]中的引用了菜單中的[Microsoft.ActiveX Data Object2.5 Library]選項(xiàng)，或其它版本

1.'ADO代碼與Access2000數(shù)據(jù)庫(kù)連接

Private Sub Command1_Click()

DimAdoCnn As ADODB.Connection

DimAdoRs As ADODB.Recordset

SetAdoCnn = New ADODB.Connection

SetAdoRs = New ADODB.Recordset

AdoCnn.CursorLocation = adUseClient

'.open后面的字符串可以參考ADO控件連接.ConnectionString后面的的字符串

AdoCnn.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" &App.Path & "chncmadb1.mdb;Jet OLEDB:DataBasePASSWORD=123456"

AdoRs.Open "select * from[耕地資源管理單元屬性數(shù)據(jù)表2004]", AdoCnn, adOpenDynamic,adLockPessimistic, adCmdText

SetDataGrid1.DataSource = AdoRs

SetAdoRs = Nothing

SetAdoCnn = Nothing

End Sub

2.'ADO代碼與DBF表連接

Private Sub Command2_Click()

DimAdoCnn As ADODB.Connection

DimAdoRs As ADODB.Recordset

SetAdoCnn = New ADODB.Connection

SetAdoRs = New ADODB.Recordset

AdoCnn.CursorLocation = adUseClient

'.open后面的字符串可以參考ADO控件連接.ConnectionString后面的的字符串

AdoCnn.Open "Provider=MSDASQL.1;Driver=Microsoft Visual FoxproDriver;SourceDB=" & App.Path & ";SourceType=DBF;LocaleIdentifier=2052"

AdoRs.Open "select * from [DBF1]", AdoCnn,adOpenDynamic, adLockPessimistic, adCmdText

SetDataGrid1.DataSource = AdoRs

SetAdoRs = Nothing

SetAdoCnn = Nothing

End Sub

3.'ADO代碼與Excel表連接

Private Sub Command3_Click()

DimAdoCnn As ADODB.Connection

DimAdoRs As ADODB.Recordset

SetAdoCnn = New ADODB.Connection

SetAdoRs = New ADODB.Recordset

AdoCnn.CursorLocation = adUseClient

'.open后面的字符串可以參考ADO控件連接.ConnectionString后面的的字符串

AdoCnn.Open"Provider=Microsoft.Jet.OLEDB.4.0;Persist SecurityInfo=False;Data Source=" & App.Path & "EXcel.xls;ExtendedProperties='Excel 8.0;HDR=Yes'"

AdoRs.Open "select * from [EXcel.xls]",AdoCnn, adOpenDynamic, adLockPessimistic, adCmdText

SetDataGrid1.DataSource = AdoRs

SetAdoRs = Nothing

SetAdoCnn = Nothing

End Sub

4.'ADO代碼與Oracle數(shù)據(jù)庫(kù)連接

Private Sub Command4_Click()

DimAdoCnn As ADODB.Connection

DimAdoRs As ADODB.Recordset

SetAdoCnn = New ADODB.Connection

SetAdoRs = New ADODB.Recordset

AdoCnn.CursorLocation = adUseClient

'.open后面的字符串可以參考ADO控件連接.ConnectionString后面的的字符串

AdoCnn.Open "Provider=OraOLEDB.Oracle.1;Password=chncmadb;PersistSecurity Info=True;User ID=chncmadb;DataSource=towebserver"

AdoRs.Open "select * from T320481TR012004",AdoCnn, adOpenDynamic, adLockPessimistic, adCmdText

SetDataGrid1.DataSource = AdoRs

SetAdoRs = Nothing

SetAdoCnn = Nothing

End Sub

5.'ADO代碼與SQLserver數(shù)據(jù)庫(kù)連接

'未測(cè)試

Private Sub Command5_Click()

DimAdoCnn As ADODB.Connection

DimAdoRs As ADODB.Recordset

SetAdoCnn = New ADODB.Connection

SetAdoRs = New ADODB.Recordset

AdoCnn.CursorLocation = adUseClient

'.open后面的字符串可以參考ADO控件連接.ConnectionString后面的的字符串

AdoCnn.Open "Provider=SQLOLEDB.1;Password=111;Persist SecurityInfo=True;User ID=111;Initial Catalog=111;DataSource=111"

AdoRs.Open "select * from T320481TR012004",AdoCnn, adOpenDynamic, adLockPessimistic, adCmdText

SetDataGrid1.DataSource = AdoRs

SetAdoRs = Nothing

SetAdoCnn = Nothing

End Sub

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