Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.ServiceModel/System/ServiceModel/AuditLevel.cs

@@ -0,0 +1,37 @@
+//----------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+
+namespace System.ServiceModel
+{
+    using System.ComponentModel;
+
+    public enum AuditLevel
+    {
+        None = 0,
+        Success = 0x1,
+        Failure = 0x2,
+        SuccessOrFailure = Success | Failure,
+    }
+
+    static class AuditLevelHelper
+    {
+        public static bool IsDefined(AuditLevel auditLevel)
+        {
+            return auditLevel == AuditLevel.None
+                || auditLevel == AuditLevel.Success
+                || auditLevel == AuditLevel.Failure
+                || auditLevel == AuditLevel.SuccessOrFailure;
+        }
+
+        public static void Validate(AuditLevel value)
+        {
+            if (!IsDefined(value))
+            {
+                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidEnumArgumentException("value", (int)value,
+                    typeof(AuditLevel)));
+            }
+        }
+
+    }
+}