Question

我想创建一个Windows窗体，让用户选择一个SQL Server实例来连接并在该数据库上运行查询。

这可能吗？如何创建动态SQL连接？

Answer 1

要创建连接字符串，您可以使用http://translate.google.pl/translate?js=n&prev=_t&hl=pl&ie=UTF-8&layout=2&eotf=1&sl=pl&tl=en&u=http%3A%2F%2Fafin.net%2FKsiazkaSQLwExcelu%2FGraficznyEdytorZapytanSqlNaPrzykladzieMsQuery.htm，之后您可以将创建的连接字符串传递到SqlConnectionStringBuilder：

Sub ADOImportFromAccessTable(DBFullName As String, _
    TableName As String, TargetRange As Range)
' Example: ADOImportFromAccessTable "C:\FolderName\DataBaseName.mdb", _
    "TableName", Range("C1")
Dim cn As ADODB.Connection, rs As ADODB.Recordset, intColIndex As Integer
    Set TargetRange = TargetRange.Cells(1, 1)
    ' open the database
    Set cn = New ADODB.Connection
    cn.Open "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & _
        DBFullName & ";"
    Set rs = New ADODB.Recordset
    With rs
        ' open the recordset
        .Open TableName, cn, adOpenStatic, adLockOptimistic, adCmdTable 
        ' all records
        '.Open "SELECT * FROM " & TableName & _
            " WHERE [FieldName] = 'MyCriteria'", cn, , , adCmdText 
        ' filter records

        RS2WS rs, TargetRange ' write data from the recordset to the worksheet

'        ' optional approach for Excel 2000 or later (RS2WS is not necessary)
'        For intColIndex = 0 To rs.Fields.Count - 1 ' the field names
'            TargetRange.Offset(0, intColIndex).Value = rs.Fields(intColIndex).Name
'        Next
'        TargetRange.Offset(1, 0).CopyFromRecordset rs ' the recordset data

    End With
    rs.Close
    Set rs = Nothing
    cn.Close
    Set cn = Nothing
End Sub

让用户选择与SQL Server的连接

1 个答案: