csharp object is in object list

Code Example - csharp object is in object list

                
                        public class A { public int Id {get;set;} public A() {} public A(int id) {Id = id;}}

List<A> list = new List<A>() { new A() { Id = 1}, new A() { Id = 2}};

bool containsItem = list.Any(item => item.Id == 3);
// this would return false.
                    
                
 

csharp verify in class exist in list

                        
                                Item wonderIfItsPresent = ...
bool containsItem = myList.Any(item => item.UniqueProperty == wonderIfItsPresent.UniqueProperty);'
                            
                        
 

list contains type csharp

                        
                                if (within.OfType<Ball>().Any())