Initial data commit

Task/Assertions/C-sharp/assertions-2.cs

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+Imports System.Diagnostics
+' Note: VB Visual Studio projects have System.Diagnostics imported by default,
+' along with several other namespaces.
+
+Module Program
+    Sub Main()
+        Dim a As Integer = 0
+
+        Console.WriteLine("Before")
+
+        ' Always hit.
+        Trace.Assert(a = 42, "Trace assertion failed: The Answer was incorrect")
+
+        Console.WriteLine("After Trace.Assert")
+
+        ' Only hit in debug builds.
+        Debug.Assert(a = 42, "Debug assertion failed: The Answer was incorrect")
+
+        Console.WriteLine("After Debug.Assert")
+    End Sub
+End Module