Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System/compmod/system/diagnostics/SwitchLevelAttribute.cs

@@ -0,0 +1,31 @@
+//------------------------------------------------------------------------------
+// <copyright file="SwitchLevelAttribute .cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+using System;
+using System.Reflection;
+using System.Collections;
+
+namespace System.Diagnostics {
+
+    [AttributeUsage(AttributeTargets.Class)]
+    public sealed class SwitchLevelAttribute : Attribute {
+        private Type type;
+        
+    	public SwitchLevelAttribute (Type switchLevelType) {
+    	    SwitchLevelType = switchLevelType;
+        }
+
+    	public Type SwitchLevelType { 
+    	    get { return type;}
+    	    set { 
+    	        if (value == null)
+    	            throw new ArgumentNullException("value");
+    	        
+    	        type = value;
+	        }
+        }
+    }
+}