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How to use Lambda expression wiht generic delegate
//Rextester.Program.Main is the entry point for your code. Don't change it. //Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5 //Rextester.Program.Main is the entry point for your code. Don't change it. //Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5 using System; using System.Collections.Generic; using System.Linq; using System.Text.RegularExpressions; namespace Rextester { public class Program { public static void Main(string[] args) { //Your code goes here var ProductLists = new List<Product>(){ new Product{Price=600m,Category="Soccer"}, new Product{Price=700m,Category="Electronics"}, new Product{Price=600m,Category="Soccer"} }; //Defining the generic delegate Func<Product,bool> IsSoccerCategory=prod=>prod.Category=="Soccer"; var getAllSoccer = ProductLists.Filter(IsSoccerCategory); var TotalPrice = getAllSoccer.Sum(p=>p.Price); Console.WriteLine("The total price for in the soccer is {0}",TotalPrice); } } public static class FilterCategory{ public static IEnumerable<Product> Filter(this IEnumerable<Product> products,Func<Product,bool> selectParam){ foreach(var prod in products) { if(selectParam(prod)){ yield return prod; } } } } public class Product{ public decimal Price {get;set;} public string Category {get;set;} } }
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