search multiple values in a textbox - mvc

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C#

ASP.NET

LINQ

MVC

Dear all,

I am trying to get my query, to be able to search multiple values of 'tag' fieldname in one textbox. I am little unclear what is correct approach for this task. I have started by adding split to the linq query below, however this is approach keeps throwing me a compiling error such as:

Argument 1: cannot convert from 'string[]' to 'string' --> error

Updated Code:

public ActionResult Search(string search, string type, string cover, string sin, string cus)
{
    DateTime yesterday = DateTime.Today.AddBusinessDays(-1);

    var query = from s in db.data_qy
               where s.UploadDate == yesterday
               select (s);

    if (!String.IsNullOrEmpty(cover))
    {
        query = query.Where(s => s.Cover == cover);
    }

    if (!string.IsNullOrEmpty(cus))
    {
        string [] ids = cus.Split(',');

        query = query.Where(c => c.TAG.Contains(ids)); //error
    }
   // var data = query.ToList();
    return View(query);
}

Any help would be very much appreciated. Many thanks.