Create 2019-02-24-exceptions_are_bugs_not_business_logic.md

posts/2019-02-24-exceptions_are_bugs_not_business_logic.md

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+---
+title: "Exceptions are bugs, not business logic!"
+date: 2019-02-24
+listed: false
+---
+
+# Exceptions are bugs, not business logic!
+
+# Magic values
+
+## Masks the issue, unnecessary code, results in NullReferenceException.
+
+# Ensure your catch handlers never throw.
+
+# When is it appropriate to catch exceptions?
+
+1. When wrapping the exceptions with another exception to give it more context.
+
+```c#
+try
+{
+    ProcessOrder(orderId);
+}
+catch(Exception ex)
+{
+    throw new OrderException("An exception occured trying to process the order", orderId, ex);
+}
+```