EventLevel.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Core / System / Diagnostics / Eventing / Reader / EventLevel.cs / 1305376 / EventLevel.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class: EventLevel 
**
** Purpose: 
** This public class describes the metadata for a specific Level
** defined by a Provider. An instance of this class is obtained from
** a ProviderMetadata object.
** 
============================================================*/
 
using System.Collections.Generic; 

namespace System.Diagnostics.Eventing.Reader { 

    /// 
    /// Describes the metadata for a specific Level defined by a Provider.
    /// An instance of this class is obtained from a ProviderMetadata object. 
    /// 
    [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] 
    public sealed class EventLevel { 

        private int value; 
        private string name;
        private string displayName;
        private bool dataReady;
        ProviderMetadata pmReference; 
        object syncObject;
 
        //called from EventMetadata 
        internal EventLevel(int value, ProviderMetadata pmReference) {
            this.value = value; 
            this.pmReference = pmReference;
            this.syncObject = new object();
        }
 
        //called from ProviderMetadata
        internal EventLevel(string name, int value, string displayName) { 
            this.value = value; 
            this.name = name;
            this.displayName = displayName; 
            this.dataReady = true;
            this.syncObject = new object();
        }
 
        internal void PrepareData() {
            if (dataReady == true) return; 
 
            lock (syncObject) {
                if (dataReady == true) return; 

                IEnumerable result = pmReference.Levels;
                this.name = null;
                this.displayName = null; 
                this.dataReady = true;
                foreach (EventLevel lev in result) { 
                    if (lev.Value == this.value) { 
                        this.name = lev.Name;
                        this.displayName = lev.DisplayName; 
                        break;
                    }
                }
            } 
        }
 
        public string Name { 
            get {
                PrepareData(); 
                return this.name;
            }
        }
 
        public int Value {
            get { 
                return this.value; 
            }
        } 

        public string DisplayName {
            get {
                PrepareData(); 
                return this.displayName;
            } 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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