diff --git a/eventHandler.cs b/eventHandler.cs
new file mode 100644
index 0000000..3939459
--- /dev/null
+++ b/eventHandler.cs
@@ -0,0 +1,77 @@
+using System;
+usingSystem.Collections.Generic;
+usingSystem.Linq;
+usingSystem.Text;
+usingSystem.Threading.Tasks;
+
+
+namespace eventTestClass
+{
+
+Class Program
+    {
+Private int nvalue;
+Public delegate void valueChangedEventHandler();
+Public event valueChangedEventHandler changed;
+Protected virtual void onChanged()
+        {
+if (changed != null)
+changed();
+else
+Console.WriteLine("Event fired. No Handler");
+        }
+
+Public Program (int value)
+        {
+SetValue(nvalue);
+        }
+Public void SetValue(int nv)
+        {
+if (nvalue!=nv)
+            {
+nvalue = nv;
+onChanged();
+            }
+        }
+
+    }
+Class Program1
+    {
+Public void HandlerChange1()
+        {
+Console.WriteLine("Handler1");
+        }
+Public void HandlerChange2()
+        {
+Console.WriteLine("Handler2");
+        }
+Public void HandlerChange3()
+        {
+Console.WriteLine("Handler3");
+        }
+
+Static void Main(string[] args)
+        {
+Program p1 = newProgram(9);
+Program1 p2 = newProgram1();
+Program1 p3 = newProgram1();
+            p1.SetValue(10);
+            p1.changed += newProgram.valueChangedEventHandler(p2.HandlerChange1);
+            p1.changed += newProgram.valueChangedEventHandler(p2.HandlerChange2);
+            p1.SetValue(5);
+            p1.SetValue(5);
+
+            p1.changed += newProgram.valueChangedEventHandler(p2.HandlerChange1);
+            p1.SetValue(5);
+            p1.changed += newProgram.valueChangedEventHandler(p2.HandlerChange1);
+            p1.SetValue(44);
+            p1.SetValue(44);
+            p1.SetValue(44);
+            p1.changed += newProgram.valueChangedEventHandler(p3.HandlerChange3);
+Console.WriteLine("Enter any key");
+Console.ReadKey();
+
+        }
+    }
+}
+