Michel,
Include "driver=SQL server;" with SQLConnectstring and change true to yes (didn't try with true before maybe it'd work too).
In VS2005 it'd work as is because it uses SQL native client and doesn't need driver specified.
For SQL2005 you can also use (if ODBC driver is installed):
Driver = {SQL Native client}

lnHandle = SQLStringConnect('Driver=SQL server;'+;
 'Data Source = .\SQLEXPRESS;'+;
 'AttachDbFilename="D:\Visual Studio Projects\Test\Test.mdf";'+;
 'Integrated Security=SSPI;User Instance=yes')

Cetin


>I am trying to open a local SQL Server database. From the VS 2005 interface, the connection string gives this:
>
>

>Data Source=.\SQLEXPRESS;AttachDbFilename="D:\Visual Studio Projects\Test\Test.mdf";Integrated Security=True;User Instance=True
>

>
>So, from VFP, I do this:
>
>

>lcSQLString=[Data Source=.\SQLEXPRESS;AttachDbFilename="D:\Visual Studio Projects\Test\Test.mdf";Integrated Security=True;User Instance=True]
>lnSqlHandle = SQLSTRINGCONNECT(lcSQLString)
>

>
>But, as soon as I execute the SQLSTRINGCONNECT line, I have this Select Data Source window which is appearing. How can I succeed to open this connection?