我正在使用visual basic 6.我创建了一个按钮,按下时应显示该表的所有条目.我使用以下代码连接到MySQL数据库.我使用Microsoft远程数据服务作为我的参考

码：

Private Sub cmdConnectMySQL_Click()
Dim cnMySql As New rdoConnection
Dim rdoQry  As New rdoQuery
Dim rdoRS   As rdoResultset

  cnMySql.CursorDriver = rdUseOdbc
  cnMySql.Connect = "uid=root;pwd=;
  server=localhost; driver={MySQL ODBC 3.51 Driver};
  database=demo;dsn=;"
  cnMySql.EstablishConnection
  With rdoQry
    .Name = "selectUsers"
    .SQL = "select * from user"
    .RowsetSize = 1
    Set .ActiveConnection = cnMySql
    Set rdoRS = .OpenResultset(rdOpenKeyset, rdConcurRowVer)
  End With

  Do Until rdoRS.EOF
    With rdoRS
      rdoRS.MoveNext
    End With
  Loop
  rdoRS.Close
  cnMySql.Close

End Sub 

我无法连接到数据库.我该如何连接？

解决方法:

你能用ADO代替RDO吗？

>添加对Microsoft ActiveX Data Objects 2.8库的引用
>设置ODBC DSN以连接到数据库

然后使用这样的代码

Dim cnConnection As ADODB.Connection
Dim adorsRecordSet As ADODB.Recordset
Dim sDatabase As String
Dim sSQL As String

sDatabase = "NameOfTheMysqlDSN"
sSQL= "Select * From user"

Set cnConnection = New ADODB.Connection
cnConnection.Open sDatabase
Set adorsRecordSet = New ADODB.Recordset

adorsRecordSet.Open sSQL, cnConnection 

Do Until (adorsRecordSet.EOF)
     adorsRecordSet.MoveNext
Loop