I have a situation where I have more then 10 lac record in database. and I when a user hit my action method in MVC with some selected records I want to check whether these records are present in database or not by fetching all the record and comparing them with record passed by user.

then I want to pass all those record to an another function. Is it safe to pass so many record in a function parameter??

Here is a demo :-

    //Action Method

    [HttpGet]
    Public ActionResult SaveRecords(List<int> selectedRecords)
    {
        List<int> allRecordsFromDB = _db.GetAllRecords();
        if(allRecordsFromDB.Contains(selectedRecords))
        {
            _Process(allRecordsFromDB); //here I am passing more than 10 lac devices to a function as parameter
        }
    }

    Private void _Process(List<int> allRecords)
    {
        //Do some process here 
    }

Thanks :)