Create SQL Server DSN

I wanna create a SQL Server DSN programatically using WinAPI, anybody can give me sample coding?

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The foll. code must be in the general declarations.

Option Explicit

    Private Const REG_SZ = 1    'Constant for a string variable type.
    Private Const HKEY_LOCAL_MACHINE = &H80000002

    Private Declare Function RegCreateKey Lib "advapi32.dll" Alias _
       "RegCreateKeyA" (ByVal hKey As Long, ByVal lpSubKey As String, _
       phkResult As Long) As Long

    Private Declare Function RegSetValueEx Lib "advapi32.dll" Alias _
       "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, _
       ByVal Reserved As Long, ByVal dwType As Long, lpData As Any, ByVal _
       cbData As Long) As Long

    Private Declare Function RegCloseKey Lib "advapi32.dll" _
       (ByVal hKey As Long) As Long

The foll. code can be in the Click() Event of a button ....

   Dim DataSourceName As String
   Dim DatabaseName As String
   Dim Description As String
   Dim DriverPath As String
   Dim DriverName As String
   Dim LastUser As String
   Dim Regional As String
   Dim Server As String

   Dim lResult As Long
   Dim hKeyHandle As Long

   'Specify the DSN parameters.

   DataSourceName = "<the name of your new DSN>"
   DatabaseName = "<name of the database to be accessed by the new DSN>"
   Description = "<a description of the new DSN>"
   DriverPath = "<path to your SQL Server driver>"
   LastUser = "<default user ID of the new DSN>"
   Server = "<name of the server to be accessed by the new DSN>"
   DriverName = "SQL Server"

   'Create the new DSN key.

        DataSourceName, hKeyHandle)

   'Set the values of the new DSN key.

   lResult = RegSetValueEx(hKeyHandle, "Database", 0&, REG_SZ, _
      ByVal DatabaseName, Len(DatabaseName))
   lResult = RegSetValueEx(hKeyHandle, "Description", 0&, REG_SZ, _
      ByVal Description, Len(Description))
   lResult = RegSetValueEx(hKeyHandle, "Driver", 0&, REG_SZ, _
      ByVal DriverPath, Len(DriverPath))
   lResult = RegSetValueEx(hKeyHandle, "LastUser", 0&, REG_SZ, _
      ByVal LastUser, Len(LastUser))
   lResult = RegSetValueEx(hKeyHandle, "Server", 0&, REG_SZ, _
      ByVal Server, Len(Server))

   'Close the new DSN key.

   lResult = RegCloseKey(hKeyHandle)

   'Open ODBC Data Sources key to list the new DSN in the ODBC Manager.
   'Specify the new value.
   'Close the key.

   lResult = RegCreateKey(HKEY_LOCAL_MACHINE, _
      "SOFTWARE\ODBC\ODBC.INI\ODBC Data Sources", hKeyHandle)
   lResult = RegSetValueEx(hKeyHandle, DataSourceName, 0&, REG_SZ, _
      ByVal DriverName, Len(DriverName))
   lResult = RegCloseKey(hKeyHandle)

Hope this helps....


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slgalAuthor Commented:
As I know, there is a API function called "SQLConfigDataSource", I have been sucessfully use it for Access database. Can I use it us SQL Server?

Yes, You can use this API also like this

#If WIN32 Then
          Dim intRet As Long
          Dim intRet As Integer
      #End If
      Dim strDriver As String
      Dim strAttributes As String

      'Set the driver to SQL Server because it is most common.
      strDriver = "SQL Server"
      'Set the attributes delimited by null.
      'See driver documentation for a complete
      'list of supported attributes.
      strAttributes = "SERVER=SomeServer" & Chr$(0)
      strAttributes = strAttributes & "DESCRIPTION=Temp DSN" & Chr$(0)
      strAttributes = strAttributes & "DSN=DSN_TEMP" & Chr$(0)
      strAttributes = strAttributes & "DATABASE=pubs" & Chr$(0)
      strAttributes = strAttributes & "UID=sa" & Chr$(0)
      strAttributes = strAttributes & "PWD=" & Chr$(0)
      'To show dialog, use Form1.Hwnd instead of vbAPINull.
      intRet = SQLConfigDataSource(vbAPINull, ODBC_ADD_DSN, _
      strDriver, strAttributes)
      If intRet Then
          MsgBox "DSN Created"
          MsgBox "Create Failed"
      End If

Hope this helps...

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Éric MoreauSenior .Net ConsultantCommented:
Take a look at the RegisterDatabase (of DAO) or rdoRegisterDatabase (of RDO). It registers perfectly.
slgalAuthor Commented:
Sorry for such a long delay. Can you tell me where I can find the documentation on this topic? I can find the function declaration in MSDN, but the constant declaration of the winapi is not available. Also, driver documentation is not available :<

Hi slgal,
Long time indeed!!
As far as the documentation is concerned, check the MSDN with the foll:
HOWTO: Programmatically Create a DSN for SQL Server with VB
Constant declarations can be obtained from API Viewer or Win32api.txt file (search this file on the HDD)
Even I was not able to obtain driver specific documentation, which is something I need at times while connecting VB with Oracle/DB2, etc.
Get back anytime..
slgalAuthor Commented:
Thx, even I cannot find those ODBC constant declaration in Win32api, I think it's time to give you the points :>
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