I am trying to use ADO select query with parameters in Delphi 7 to
query data from SQLServer Mobile database.
I can successfully query the .sdf database file from Delphi, as long
as the query does not include any parameter statements.
However, if I issue the following command:

 with ADOQuery1 do begin
 ...
   SQL.Add('Select * from HISTORY where EVENTKEY =:NextEv');
   Parameters.ParamByName('NextEv').Value := 5001;
   Open;
  ...
 end;

I get an EOleException Error: "The given type name was unrecognized.
[,,,,,]'

Similarly, using the ADO Insert query or the following ADO Command
produce the same error:
 with ADOCommand1 do
 begin
   CommandText := 'Insert into HISTORY EVENTTYPE,EVENTKEY) VALUES
(7, :NextEv)';
   CommandType := cmdText;
   Parameters.ParamByName('NextEv').Value := 5005;
   Execute;
 end;

I have also tried to use the ParseSQL command, but that does not work
either:
ADOQuery1.Parameters.ParseSQL(ADOQuery1.SQL.Text, True);

I use the following ADOConnection  ConnectionString in Delphi7:
Provider=Microsoft.SQLSERVER.MOBILE.OLEDB.3.0;Data Source=C:\...
\test.sdf

Does this provider string require any other additional switches ?
It appears to work, as long as I don't try to use any parameters.

What needs to be done to pass the parameters to the SQLServer Mobile
database ?
The above code works without problems with Access database.

Thanks,
Mariusz