怎樣確定有多少人登陸數(shù)據(jù)庫
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Sub ShowUserRosterMultipleUsers()

Dim cn As New ADODB.Connection

Dim cn2 As New ADODB.Connection

Dim rs As New ADODB.Recordset

Dim i, j As Long

cn.Provider = "Microsoft.Jet.OLEDB.4.0"

cn.Open "Data Source=c:Northwind.mdb"

cn2.Open "Provider=Microsoft.Jet.OLEDB.4.0;" _

"Data Source=c:Northwind.mdb"

' The user roster is exposed as a provider-specific schema rowset

' in the Jet 4 OLE DB provider. You have to use a GUID to

' reference the schema, as provider-specific schemas are not

' listed in ADO's type library for schema rowsets

Set rs = cn.OpenSchema(adSchemaProviderSpecific, _

, "{947bb102-5d43-11d1-bdbf-00c04fb92675}")

'Output the list of all users in the current database.

Debug.Print rs.Fields(0).Name, "", rs.Fields(1).Name, _

"", rs.Fields(2).Name, rs.Fields(3).Name

While Not rs.EOF

Debug.Print rs.Fields(0), rs.Fields(1), _

rs.Fields(2), rs.Fields(3)

rs.MoveNext

Wend

End Sub

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