Using Linq how to get data from stored procedure to dataset

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ASP.NET

LINQ

using Linq, i need to retrieve value to dataset..

for normal query,

i have tried like this for normal select statement,

DataClassesDataContext obj = new DataClassesDataContext();

public DataSet display()
   {
       var temp = from value in obj.employees
                  select value;
       SqlCommand cmd = (SqlCommand)obj.GetCommand(temp);
       SqlDataAdapter da = new SqlDataAdapter(cmd);
       DataSet ds = new DataSet();
       da.Fill(ds);
       return ds;
   }

But for stored procedure..

create procedure spdisplay
as
begin
select * from employee
end

public DataSet sp_display()
   {
       var temp = obj.spdisplay();

   }

how to retrive the values to dataset.