连接数据库

引用 Microsoft ActiveX Data Objects 2.8 Library

Private Sub Form_Load()

Dim cnn As ADODB.Connection
Set cnn = New ADODB.Connection
 cnn.Provider = "Microsoft.Jet.OLEDB.4.0"
Dim cnnFile As String
 cnnFile = "Data Source=D:\db.mdb;Persist Security Info=False;Jet OLEDB:Database Password=123456789"
cnn.Open cnnFile

Dim rs As ADODB.Recordset
 Set rs = New ADODB.Recordset
 rs.Open Table, cnn, , adLockReadOnly
 Set Me.MSHFlexGrid1.DataSource = cnn2.Execute("select * from Table")

'ADO 连接 加密Access数据库
cnn2string = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & "D:\db.mdb;Persist Security Info=False;Jet OLEDB:Database Password=123456789"

添加

strSQL = "INSERT INTO User_Table(UserID,UserPWD,UserLevel,UserINFO) VALUES('" & Text1(0).Text & "','" & Text1(1).Text & "','" & Combo1.Text & "','" & Text1(2).Text & "')"
        rs.Open strSQL, cnn, adOpenDynamic, adLockOptimistic

删除

strSQL = "DELETE FROM User_Table WHERE UserID='" & Text1(0).Text & "'"
rs.Open strSQL, cnn, adOpenDynamic, adLockOptimistic

Update

        strSQL = "SELECT * FROM User_Table WHERE UserID='" & Text1(0).Text & "'"
        rs.Open strSQL, cnn, adOpenDynamic, adLockOptimistic
        rs.Update "UserPWD", Text1(1).Text
        rs.Update "UserLevel", Combo1.Text
        rs.Update "UserINFO", Text1(2).Text

或 UPDATE 数据表名 SET 新数据值 WHERE 条件表达式

UPDATE User_Table SET UserPWD=Text1(1).Text WHERE UserID=Text1(0).Text