One interesting feature of delegates in C# is that it provide ways to attach / detach more than one methods that has method signature similar to the delegate declared and combine them together. This combining or attaching / detaching of methods to a delegate is called Multicasting. Behind the scenes: This multicasting is possible because delegates inherit from System.MulticastDelegate which in turn inherits from System.Delegate, which inherits from Object class. How to multicast: Multicasting can be done using += and / or -= operator. Here is an example that demonstrate use of += and -= to multicast delegates. private delegate void Greetings(); static void Main(string[] args) { SayHello(); Console.ReadLine(); } public static void SayHelloToScott() { Console.WriteLine("Hi Mr. Delegate, from Scott"); } public static void SayHelloToAlex() { Console.WriteLine("How about a coffee? from Alex"); } public static void SayHelloToJasmine() { Console.WriteLine("Hi delegates, from Jasmine"); } public static void SayHelloToJsinh( » Read more
I had a weird experience before few days, I definitely knew how to solve the problem and I am sure it is the right way to do it. Thinking it would not be any different to map a datatable to POCO class(es) using Automapper. But it didn't turned out to be completely true. I have been playing with Automapper for couple of years now in my day-to-day work, but I stumbled a bit this time. Situationally, I was not able to conclude the problem with a working solution at that moment, thus I would take this opportunity and write about it so anyone out there who is facing same or similar problem can find their answers. Problem Data filled into a datatable was expected to be converted to Json object. If the datatable contains more than one row the resultant Json should have list of Json objects for each » Read more
In case you are serializing your models to generate XML content, you will often encounter empty nodes and elements in the XML which appears when the entity property is not filled or the list is empty. Lets take an example of Employee model class as below: using System.Collections.Generic; using System.Xml.Serialization; public class Employee { public Employee() { this.Skills = new List<string>(); } [XmlElement("FirstName")] public string FirstName { get; set; } [XmlElement("LastName")] public string LastName { get; set; } [XmlArray("Skills")] [XmlArrayItem("Skill")] public List<string> Skills { get; set; } } When you generate XML for the above model by assigning FirstName and LastName only keeping Skills empty: var employeeDetail = new Employee() { FirstName = "Mister", LastName = "XYZ" }; var employeeDetailXml = SerializeXml(employeeDetail); you will get XML content something like this: <?xml version="1.0" » Read more
