cris-csharp.errorHandling.md

+Creating User-Defined Exceptions
+
+You can also define your own exception. User-defined exception classes are derived from the Exception class. The following example demonstrates this −
+
+using System;
+
+namespace UserDefinedException {
+   class TestTemperature {
+      static void Main(string[] args) {
+         Temperature temp = new Temperature();
+         try {
+            temp.showTemp();
+         } catch(TempIsZeroException e) {
+            Console.WriteLine("TempIsZeroException: {0}", e.Message);
+         }
+         Console.ReadKey();
+      }
+   }
+}
+public class TempIsZeroException: Exception {
+   public TempIsZeroException(string message): base(message) {
+   }
+}
+public class Temperature {
+   int temperature = 0;
+   
+   public void showTemp() {
+      
+      if(temperature == 0) {
+         throw (new TempIsZeroException("Zero Temperature found"));
+      } else {
+         Console.WriteLine("Temperature: {0}", temperature);
+      }
+   }
+}
+
+When the above code is compiled and executed, it produces the following result −
+
+TempIsZeroException: Zero Temperature found
\ No newline at end of file