Search item(s) in a generic list

A better way to find item(s) in generic list using Predecate

Most often, we do with List and find one or more items in list. Imagine that we want to look for a product in List using PrimaryKey. The code is: foreach (Product p in this.Products) { if (p.PrimaryKey == primaryKey) return p; } We also have another way that makes it better in performance as well as readability. Predicate condition = delegate(Product p) { return p.PrimaryKey.Equals(primaryKey); }; return this.Products.Find(condition); To find all items: this.Products.FindAll(condition); Both of them return NULL if not found.