ActiveReport_ReportStart bind subreport script

I'm using Active Reports Subreport tool, I want to bind data source in ActiveReport_ReportStart as script by connecting Oracle. I'm using the script below but I'm having this error: Error Message:[DBNETLIB][Connection Open (Connect()).]SQL Server does not exist or access denied. Invalid connection string attribute.

public void ActiveReport_ReportStart()
{
string connString = "Provider=SQLOleDB;User Id=XXX;Password=XX;Server=XXX;Service      Name=XX;Direct=True;Persist Security Info=True";
string sqlString = @"sql query";
DataDynamics.ActiveReports.DataSources.OleDBDataSource ds = new     DataDynamics.ActiveReports.DataSources.OleDBDataSource();
ds.ConnectionString = connString;
ds.SQL = sqlString;
rpt.DataSource = ds;
}

it is actually oracle connection, so ı changed the connection string to :
Devart.Data.Oracle.OracleConnection con = new Devart.Data.Oracle.OracleConnection(); con.ConnectionString = "POOLING=FALSE;User Id=XX;Password=XX;Server=XX;Direct=True;Sid=XX;Persist Security Info=True";
DataTable dt = new DataTable();
Devart.Data.Oracle.OracleDataAdapter da = new Devart.Data.Oracle.OracleDataAdapter(sqlString, con);
da.Fill(dt);
sbrpt.DataSource = dt;

But this time I'm having "Type or namespace Devart could not be found!"

I have tried ;
arDesigner.Report.AddScriptReference("Devart.Data.Oracle.dll");
but it does not work!

Thanks in advance...

Tags: Reporting