想了解怎样在 Access 2003 和 Access 2002 中创建 DSN 的连接到 SQLServer 对链接表的相关内容吗，在本文为您仔细讲解的相关知识和一些Code实例，欢迎阅读和指正，我们先划重点：怎样在,Access,2003,和,Access,2002,中创建,DSN,的连接到,SQLServer,对链接表，下面大家一起来学习吧。
方法 1： 使用 CreateTableDef 方法
CreateTableDef 方法可创建链接表。 若要使用此方法, 创建一个新模块, 然后以下 AttachDSNLessTable 函数添加到新模块。
'//Name : AttachDSNLessTable
'//Purpose : Create a linked table to SQL Server without using a DSN
'//Parameters
'// stLocalTableName: Name of the table that you are creating in the current database
'// stRemoteTableName: Name of the table that you are linking to on the SQL Server database
'// stServer: Name of the SQL Server that you are linking to
'// stDatabase: Name of the SQL Server database that you are linking to
'// stUsername: Name of the SQL Server user who can connect to SQL Server, leave blank to use a Trusted Connection
'// stPassword: SQL Server user password
Function AttachDSNLessTable(stLocalTableName As String, stRemoteTableName As String, stServer As String, stDatabase As String, Optional stUsername As String, Optional stPassword As String)
On Error GoTo AttachDSNLessTable_Err
Dim td As TableDef
Dim stConnect As String
For Each td In CurrentDb.TableDefs
If td.Name = stLocalTableName Then
CurrentDb.TableDefs.Delete stLocalTableName
End If
Next
If Len(stUsername) = 0 Then
'//Use trusted authentication if stUsername is not supplied.
stConnect = "ODBC;DRIVER=SQL Server;SERVER=" & stServer & ";DATABASE=" & stDatabase & ";Trusted_Connection=Yes"
Else
'//WARNING: This will save the username and the password with the linked table information.
stConnect = "ODBC;DRIVER=SQL Server;SERVER=" & stServer & ";DATABASE=" & stDatabase & ";UID=" & stUsername & ";PWD=" & stPassword
End If
Set td = CurrentDb.CreateTableDef(stLocalTableName, dbAttachSavePWD, stRemoteTableName, stConnect)
CurrentDb.TableDefs.Append td
AttachDSNLessTable = True
Exit Function
AttachDSNLessTable_Err:
AttachDSNLessTable = False
MsgBox "AttachDSNLessTable encountered an unexpected error: " & Err.Description
End Function
若要调用
AttachDSNLessTable 函数, 请代码， 它类似于之一以下代码示例在
Autoexec 宏中或启动窗体
Form_Open 事件中：
| • |
当您使用 Autoexec, 调用 AttachDSNLessTable 函数, 并然后传递参数， 如以下所示从 RunCode 操作。 AttachDSNLessTable ("authors", "authors", "(local)", "pubs", "", "")
|
| • |
当您使用启动窗体, 将代码， 它类似于以下以 Form_Open 事件。 Private Sub Form_Open(Cancel As Integer)
If AttachDSNLessTable("authors", "authors", "(local)", "pubs", "", "") Then
'// All is okay.
Else
'// Not okay.
End If
End Sub |
方法 2： 使用 DAO.RegisterDatabase 方法
DAO.RegisterDatabase 方法可在
Autoexec 宏中或启动表单中创建 DSN 连接。 尽管此方法不删除对 DSN 连接, 要求它不帮助您通过代码中创建 DSN 连接解决问题。 若要使用此方法, 创建一个新模块, 然后以下
CreateDSNConnection 函数添加到新模块。
'//Name : CreateDSNConnection
'//Purpose : Create a DSN to link tables to SQL Server
'//Parameters
'// stServer: Name of SQL Server that you are linking to
'// stDatabase: Name of the SQL Server database that you are linking to
'// stUsername: Name of the SQL Server user who can connect to SQL Server, leave blank to use a Trusted Connection
'// stPassword: SQL Server user password
Function CreateDSNConnection(stServer As String, stDatabase As String, Optional stUsername As String, Optional stPassword As String) As Boolean
On Error GoTo CreateDSNConnection_Err
Dim stConnect As String
If Len(stUsername) = 0 Then
'//Use trusted authentication if stUsername is not supplied.
stConnect = "Description=myDSN" & vbCr & "SERVER=" & stServer & vbCr & "DATABASE=" & stDatabase & vbCr & "Trusted_Connection=Yes"
Else
stConnect = "Description=myDSN" & vbCr & "SERVER=" & stServer & vbCr & "DATABASE=" & stDatabase & vbCr
End If
DBEngine.RegisterDatabase "myDSN", "SQL Server", True, stConnect
'// Add error checking.
CreateDSNConnection = True
Exit Function
CreateDSNConnection_Err:
CreateDSNConnection = False
MsgBox "CreateDSNConnection encountered an unexpected error: " & Err.Description
End Function
如果再次, 调用
RegisterDatabase 方法 DSN 更新。
若要调用
CreateDSNConnection 函数, 请代码， 它类似于之一以下代码示例在
Autoexec 宏中或启动窗体
Form_Open 事件中：
| • |
当您使用 Autoexec, 调用 CreateDSNConnection 函数, 并然后传递参数， 如以下所示从 RunCode 操作。 CreateDSNConnection ("(local)", "pubs", "", "")
|
| • |
当您使用启动窗体, 将代码， 它类似于以下以 Form_Open 事件。 Private Sub Form_Open(Cancel As Integer)
If CreateDSNConnection("(local)", "pubs", "", "") Then
'// All is okay.
Else
'// Not okay.
End If
End Sub |
注意 此方法假定通过使用 " myDSN " 作为 DSN 名称， 您已经创建链接 SQLServer 表 Access 数据库中。
请
CreateTableDef 方法, 有关访问下列 Microsoft Developer Network (MSDN) Web 站点：
有关
RegisterDatabase 方法, 请访问以下 MSDNWeb 站点：
