VS 2010 - Listing Gives Error

I have a method who return list of data from database. i want to know how we can get value from list which is return by method.

public List<Company> GetCompanyInfo (int CompID)
{
db_CompanyDataContext obj_comp = new db_CompanyDataContext();
var Compnay_Info = from Cinfo in obj_comp.Companies where Cinfo.CompID == CompID
select Cinfo;
return Compnay_Info.ToList();
}

i am trying below mention statement but it gives error.

List<Company> cmp = sm.GetCompanyInfo(qry).ToList();