Retreiving Data

I am trying to retreive the Max value of Id from the sql server using "Linq to sql" to display in the form, but getting 0 as the value.Instead of Max, if i use a Count() it is giving the exact count value.Can anyone help me how to get the max value of a column using linq to sql query.

 

CompanyDataContext dc = new CompanyDataContext();

Employee obj = new Employee();

var c = ((from Employee in dc.Employees select obj.id).Max());

label6.Text=(c+1).ToString();