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Using DataLinks to get or edit a connection string

, 9 Mar 2004
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Accessing DataLinks from a .NET program to get or edit a connection string.

Sample Image - DataLinks.gif


A similar article was written on this subject but this article deals with accessing DataLinks from a .NET program to get or edit a connection string. Your project must reference DataLinks and ADODB, then execute the PromptNew or PromptEdit methods.

Step by step procedure

  1. Reference ADODB in your project. This is required to read the COM object passed back from DataLinks. This file is located here: c:\Program Files\Microsoft.NET\Primary Interop Assemblies\adodb.dll
  2. Reference DataLinks in your project. DataLinks used to be MSDASC.dll, but has changed to OLEDB32.DLL (see KB). This file is located here: C:\Program Files\Common Files\System\Ole DB\OLEDB32.DLL
  3. Create a text box and a button on a Windows Form. In the button's click event, use this code:
private void ButtonGetConnectionString_Click(object sender, 
  System.EventArgs e)
        Reference DataLinks
        NOTE: Reference 
              C:\Program Files\Common Files\System\Ole DB\OLEDB32.DLL
              (Was MSDASC.dll) 
      MSDASC.DataLinks dataLinks = new MSDASC.DataLinksClass();
      //note that a reference to: 
      //  c:\Program Files\Microsoft.NET\Primary Interop Assemblies\adodb.dll
      //is also required to read the ADODB._Connection result
      ADODB._Connection connection;                         
      //are we editing an existing connect string or getting a new one?
            // get a new connection string
               //Prompt user for new connect string
               connection = (ADODB._Connection)dataLinks.PromptNew();
               //read result
            catch(Exception ex)     
            // edit connection string
            connection=new ADODB.ConnectionClass();
            //set local COM compatible data type
            object oConnection=connection;
                  //prompt user to edit the given connect string
                  if((bool)dataLinks.PromptEdit(ref oConnection))
            catch(Exception ex)


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Comments and Discussions

Question64 / 32 bit drivers? Pin
richardbrigzy21-Sep-12 16:02
memberrichardbrigzy21-Sep-12 16:02 
AnswerRe: 64 / 32 bit drivers? Pin
jonpetitta18-Aug-14 10:08
memberjonpetitta18-Aug-14 10:08 
GeneralProblem with the waitcursor Pin
PrimozPayton25-Aug-08 3:44
memberPrimozPayton25-Aug-08 3:44 
GeneralSqlClient Issue with Provider Property Pin
Brady Kelly29-Jul-07 0:07
memberBrady Kelly29-Jul-07 0:07 
GeneralNo need for interop Pin
Sergey Prokhorenko25-Jun-07 0:38
memberSergey Prokhorenko25-Jun-07 0:38 
GeneralRe: No need for interop Pin
Sergey Prokhorenko25-Jun-07 0:42
memberSergey Prokhorenko25-Jun-07 0:42 
GeneralRe: No need for interop Pin
Brady Kelly28-Jul-07 23:58
memberBrady Kelly28-Jul-07 23:58 
GeneralRe: No need for interop Pin
Member 871442120-Nov-13 5:10
memberMember 871442120-Nov-13 5:10 
GeneralSpeed Pin
akorolev103-Oct-04 1:24
memberakorolev103-Oct-04 1:24 
GeneralGreat! Give me exact what I am looking for Pin
zhoulhh1-Jul-04 8:39
memberzhoulhh1-Jul-04 8:39 
GeneralPromptEdit(ref connectionString) Pin
UnderEducated10-Mar-04 11:33
memberUnderEducated10-Mar-04 11:33 
GeneralRe: PromptEdit(ref connectionString) Pin
DanMayer10-Mar-04 11:55
memberDanMayer10-Mar-04 11:55 
GeneralRe: PromptEdit(ref connectionString) Pin
UnderEducated10-Mar-04 13:03
memberUnderEducated10-Mar-04 13:03 
GeneralRe: PromptEdit(ref connectionString) [modified] Pin
mlgray4-Jul-06 0:06
membermlgray4-Jul-06 0:06 
GeneralRe: PromptEdit(ref connectionString) Pin
yetty200026-Oct-07 7:10
memberyetty200026-Oct-07 7:10 
GeneralRe: Very Slow... Pin
VHsu13-Feb-04 20:41
memberVHsu13-Feb-04 20:41 
GeneralRe: Very Slow... Pin
DanMayer14-Feb-04 7:45
memberDanMayer14-Feb-04 7:45 
GeneralRe: Very Slow... Pin
mgarins19-Feb-04 5:20
sussmgarins19-Feb-04 5:20 
GeneralRe: Very Slow... Pin
Ricardo Casquete18-Feb-06 0:55
memberRicardo Casquete18-Feb-06 0:55 
Really matters the Time ???

I am developing an Application to configure the Production Servers of our Customer
and I am using the UDL to avoid the customer to edit manually the Enterprise Library Data Access Files Config Files

Who mind's a seconds???

Very Good Article, you solve my problem with the PromptEdit()

ps: Maybe it could be a good idea to give the Exact Name of the COM component

because also this can be added in the COM tab, the component is
"Microsoft OLE DB Service 1.0 Component Type Library"

( a pity this dll don't have a strong Name, I cannot sign this part of the project....

Ricardo Casquete

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