Late binding means – we can create instance not in compilation time but in execution and call methods with or without params
-invoke methods with / without params
-setting private fields
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using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Reflection; using System.IO; namespace LateBindingApp { class Program { static void Main(string[] args) { Console.WriteLine("***Fun with Late Binding***"); Assembly a = null; try { a = Assembly.LoadFrom("C:\\C#\\MyC#StudyProjects\\07_DifferentMains\\LateBindingApp\\LateBindingApp\\bin\\Debug\\CarLibrary2.dll"); } catch (FileNotFoundException ex) { Console.WriteLine(ex.Message); return; } if (a != null) CreateUsingLateBinding(a); Console.ReadLine(); } static void CreateUsingLateBinding(Assembly asm) { try { Type miniVan = asm.GetType("CarLibrary.MiniVan"); object obj = Activator.CreateInstance(miniVan); // call method with reflection MethodInfo mi = miniVan.GetMethod("TurboBoost"); // invoke method without params mi.Invoke(obj, null); // call method with reflection with params MethodInfo mi1 = miniVan.GetMethod("TurnOnRadio"); // invoke method with params //object[] paramsArray=new object[] {true, "someRadioMessage"} mi1.Invoke(obj, new object[] { true, "someRadioMessage" }); // setting private field // typeof(Foo).GetField("_bar", BindingFlags.NonPublic | BindingFlags.Instance).SetValue(objectForFoocClass, "newValue"); miniVan.GetField("SomeField", BindingFlags.NonPublic | BindingFlags.Instance).SetValue(obj, "SomeValue"); // getting private field // var _barVariable = typeof(Foo).GetField("_bar", BindingFlags.NonPublic | BindingFlags.Instance).GetValue(objectForFooClass); var fieldValue =miniVan.GetField("SomeField", BindingFlags.NonPublic | BindingFlags.Instance).GetValue(obj); Console.WriteLine(fieldValue); Console.WriteLine("Created a {0} using late binding!", obj); } catch (Exception e) { Console.WriteLine(e.Message); } } } } |