As long as your DataSource string contains no "dangerous" characters they perform equivalent. Examples of "dangerous" characters: Comma, semicolon, space, quotes, etc.

SQLCA.DBParm="DataSource='Alfa,DisableBind=1',TrustedConnection=1,..."

SQLCA.DBParm="DataSource=Alfa,DisableBind=1,TrustedConnection=1,..."

In most cases your data source name is safe - but who knows what an attack on your INI file may do to your DBParm text?

I personally would always use quotes to eliminate a risk I don't need.

HTH /Michael

Sample function that applies quotes only when quotes are missing

// string function of_GetQuoted(readonly string as_text, readonly string as_quote)
if Left(as_text, 1) + Right(as_text, 2) = as_quote + as_quote then
   return as_text
else
   return as_quote + as_text + as_quote
end if

This function is easily inserted into existing expressions:

SQLCA.DBParm = "DataSource='" + ProfileString(gs_inidbloc, ...) + &

SQLCA.DBParm = "DataSource=" + of_Quoted(ProfileString(gs_inidbloc, ...), "'") + &

I have modified my code to include the function, it is still stripping the '.

I have added the character ~ to the string formation:

SQLCA.DBMS = profilestring(gs_inidbloc, 'DBMS_PROFILES', 'DBMS', '')
SQLCA.AutoCommit = False
SQLCA.Database = ls_database
SQLCA.DBParm = "DataSource= ~' "            + ls_source + "~'" &
                       + ",TrustedConnection="  + profilestring(gs_inidbloc, 'DBMS_PROFILES', 'TrustedConnection', '') &
                       + ",Namespace=  "            + wf_quoted(ls_namespace, "'")  &
                       + ",CommandTimeout= '1200' "

I did make the function global but here is its code:

if Left(as_text, 1) + Right(as_text, 2) = as_quote + as_quote then
   return as_text
else
   return as_quote + as_text + as_quote
end if

Connection string results

dbparm=DataSource=server\instance, TrustedConnection=1,Namespace='System.data.SqlClient',Database=db_version

Error is DBMS ADO.NET is not supported in your current installation.

I think if I can get the ' wrapped around the server\instance I might have a different result.