WebProcessInformation Class

Provides information about the worker process that hosts ASP.NET.

Namespace:  System.Web.Management
Assembly:  System.Web (in System.Web.dll)

[AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public sealed class WebProcessInformation

ASP.NET health monitoring allows production and operations staff to manage deployed Web applications. The System.Web.Management namespace contains the health-event types responsible for packaging application health-status data, and the provider types responsible for processing this data. It also contains supporting types that help during the management of health events.

Instances of the WebProcessInformation class contain information that is obtained using any of the types derived from the WebManagementEvent type.

Your application needs the appropriate permissions to access protected information provided by this type.

The following example is an excerpt of the configuration file you could use to enable ASP.NET to log error events that contain process information.

  enabled="true" heartBeatInterval="0">

       name="All Errors Default"
       eventName="All Errors"
       minInterval="00:01:00" />


In most cases you will be able to use the ASP.NET health-monitoring types as implemented, and you will control the health-monitoring system by specifying values in the healthMonitoring configuration section. You can also derive from the health-monitoring types to create your own custom events and providers. For an example of creating a custom event class, see the Example section.

The following example has two parts. The first is an excerpt of a configuration file that enables ASP.NET to use a custom event that uses the WebProcessInformation type.

The second shows how to implement the custom event.

Ensure that your custom event is raised at the proper time, that is, when the equivalent system health event it replaces would be raised.

  enabled="true" heartBeatInterval="0">

        type="SamplesAspNet.SampleWebProcessInformation, webprocessinformation, Version=1.0.1585.27289, Culture=neutral, PublicKeyToken=3648e5c763a8239f, processorArchitecture=MSIL"/>
        name="Custom Process Information"


The following example shows how to implement a custom event that uses the WebProcessInformation type.

using System;
using System.Text;
using System.Web;
using System.Web.Management;

namespace SamplesAspNet
    // Implements a custom WebBaseEvent type that  
    // uses WebProcessInformation. 
    public class SampleWebProcessInformation: 
        private StringBuilder eventInfo;
        // Instantiate SampleWebProcessInformation.     
        public SampleWebProcessInformation(string msg, 
            object eventSource, int eventCode) : 
        base(msg, eventSource, eventCode)
            // Perform custom initialization.
            eventInfo = new StringBuilder();
            "Event created at: {0}", 

        // Raises the event. 
        public override void Raise()
            // Perform custom processing. 
            "Event raised at: {0}", 

            // Raise the event. 

        public string GetAccountName()
            // Get the name of the account. 
            return (string.Format(
                "Account name: {0}", 

        public string GetProcessId()
            // Get the process identifier. 
            return (string.Format(
                "Process Id: {0}", 

        public string GetProcessName()
            // Get the requests in execution. 
            return (string.Format(
                "Process name: {0}", 

        //Formats Web request event information. 
        public override void FormatCustomEventDetails(
            WebEventFormatter formatter)

            // Add custom data.
            formatter.AppendLine("Custom Process Information:");
            formatter.IndentationLevel += 1;

            // Display the process information.
            formatter.IndentationLevel -= 1;



Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0
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