Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/Management/IisTraceWebEventProvider.cs

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+//------------------------------------------------------------------------------
+// <copyright file="IisTraceWebEventProvider.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Web.Management {
+    using System.Configuration;
+    using System.Configuration.Provider;
+    using System.Collections.Specialized;
+    using System.Web.Util;
+    using System.Web.Hosting;
+    using System.Security.Permissions;
+
+    ////////////
+    // Events
+    ////////////
+
+    public sealed class IisTraceWebEventProvider  : WebEventProvider {
+
+        public IisTraceWebEventProvider() {
+            // only supported on IIS version 7 and later
+            HttpContext context = HttpContext.Current;
+            if (context != null) {
+                if (!HttpRuntime.UseIntegratedPipeline && !(context.WorkerRequest is ISAPIWorkerRequestInProcForIIS7)) {
+                    throw new PlatformNotSupportedException(SR.GetString(SR.Requires_Iis_7));
+                }
+            }
+        }
+
+        public override void Initialize(string name, NameValueCollection config)
+        {
+            Debug.Trace("IisTraceWebEventProvider", "Initializing: name=" + name);
+            base.Initialize(name, config);
+
+            ProviderUtil.CheckUnrecognizedAttributes(config, name);
+        }
+
+
+        public override void ProcessEvent(WebBaseEvent eventRaised)
+        {
+            HttpContext context = HttpContext.Current;
+            if (context != null) {
+                context.WorkerRequest.RaiseTraceEvent(eventRaised);
+            }
+        }
+        
+
+        public override void Flush() {
+        }
+
+
+        public override void Shutdown() {
+        }
+    }
+
+}
+