How to update only one field using Entity Framework

 How to update only one field using Entity Framework

 

var tableEmployee = new T_Employees() { EmployeeID = item.EmployeeID , IsDisplayRequired = item.IsDisRequired };

                using (var db = new DBEntitiesContext())

                {

                    db.Configuration.ValidateOnSaveEnabled = false;

                    db.T_Employees.Attach(tableEmployee);

                    db.Entry(tableEmployee).Property(x => x.IsDisplayRequired).IsModified = true;

                    db.SaveChanges();

                    db.Configuration.ValidateOnSaveEnabled = true;

                }