EventLogLink.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 / EventLogLink.cs / 1305376 / EventLogLink.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class: EventLogLink 
**
** Purpose: 
** This public class describes the metadata for a specific Log
** Reference 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 Log Reference defined
    /// by a Provider. An instance of this class is obtained from 
    /// a ProviderMetadata object.
    ///  
    [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] 
    public sealed class EventLogLink {
        private string channelName; 
        private bool isImported;
        private string displayName;
        private uint channelId;
 
        private bool dataReady;
        ProviderMetadata pmReference; 
        object syncObject; 

        internal EventLogLink(uint channelId, ProviderMetadata pmReference) { 
            this.channelId = channelId;
            this.pmReference = pmReference;
            this.syncObject = new object();
        } 

        internal EventLogLink(string channelName, bool isImported, string displayName, uint channelId) { 
            this.channelName = channelName; 
            this.isImported = isImported;
            this.displayName = displayName; 
            this.channelId = channelId;

            this.dataReady = true;
            this.syncObject = new object(); 
        }
 
        private void PrepareData() { 
            if (dataReady == true) return;
 
            lock (syncObject) {
                if (dataReady == true) return;

                IEnumerable result = pmReference.LogLinks; 

                this.channelName = null; 
                this.isImported = false; 
                this.displayName = null;
                this.dataReady = true; 

                foreach (EventLogLink ch in result) {
                    if (ch.ChannelId == this.channelId) {
                        this.channelName = ch.LogName; 
                        this.isImported = ch.IsImported;
                        this.displayName = ch.DisplayName; 
 
                        this.dataReady = true;
 
                        break;
                    }
                }
            } 
        }
 
 
        public string LogName {
            get { 
                this.PrepareData();
                return this.channelName;
            }
        } 

        public bool IsImported { 
            get { 
                this.PrepareData();
                return this.isImported; 
            }
        }

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

        internal uint ChannelId {
            get {
                return channelId; 
            }
        } 
    } 

} 

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

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