LINQ extension methods - Any() vs. Where() vs. Exists()

Question

Unfortunately the names of these methods make terrible search terms, and I\'ve been unable to find a good resource that explains the difference between these methods--as in

Answer 1

foreach (var item in model.Where(x => !model2.Any(y => y.ID == x.ID)).ToList())
{
enter code here
}

same work you also can do with Contains

secondly Where is give you new list of values. thirdly using Exist is not a good practice, you can achieve your target from Any and contains like

EmployeeDetail _E = Db.EmployeeDetails.where(x=>x.Id==1).FirstOrDefault();

Hope this will clear your confusion.