SQL Server如何用代码通过ODBC刷新链接

Function relink()
 Dim db As Database
 Dim tbl As TableDef
 Dim a As String
 Dim b As String
 Dim d As String

 a = "sa"'数据库用户
 b = "abc"'数据库口令
 d = "abcde"'数据库名称
 Set db = CurrentDb
For Each tbl In db.TableDefs
 If tbl.Attributes = 536870912 Then
 tbl.Connect = "FILEDSN=d:\demo\steel.dsn;
UID=" & a & ";PWD=" & b & ";WSID=;DATABASE=" & d & ";Network=DBMSSOCN"
 '
 tbl.Attributes = dbAttachSavePWD
 tbl.RefreshLink
 End If
 Next
End Function