AdventureWorksDataContext ad = new AdventureWorksDataContext();
var sp1 = typeof(AdventureWorksDataContext).GetMethod("uspGetManagerEmployees");//Get the SP
var result1 = sp1.Invoke(ad, new object[] { 16 });
var sp = typeof(AdventureWorksDataContext).GetMethod("GetEmployee");//Get the SP
var result = sp.Invoke(ad, new object[] { });//If no parameters are passed