how i supplement sqlparameters but meaningful name / type?

i am formulating db coupling am need adding sql paramters stament however i know parameter names type, done? i have seen libraries this...

i only wish method values mapped stored procedure...i guess following formula work:

public datatable executedatatable(string storedprocname, params object[] args)
{
    sqlcommand cmd = new sqlcommand(storedprocname, conn);
    cmd.commandtype = commandtype.storedprocedure;

    // inserting params does work...
    (int i = 0; i < args.length; i++)
    {
        cmd.parameters.insert(i, args[0]);
    }

    datatable dt = new datatable();
    dt.load(cmd.executereader());

    relapse dt;
}

any ideas accomplish this? note: i know there libraries such craving library already does this, nonetheless i'm conditions where won't help...

thanks.