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EventLogEntryCollection Class

Defines size and enumerators for a collection of EventLogEntry instances.


Namespace:  System.Diagnostics
Assembly:  System (in System.dll)

public class EventLogEntryCollection : ICollection, 

The EventLogEntryCollection type exposes the following members.

Public propertyCountGets the number of entries in the event log (that is, the number of elements in the EventLogEntry collection).
Public propertyItemGets an entry in the event log, based on an index that starts at 0 (zero).

Public methodCopyToCopies the elements of the EventLogEntryCollection to an array of EventLogEntry instances, starting at a particular array index.
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetEnumeratorSupports a simple iteration over the EventLogEntryCollection object.
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

Public Extension MethodAsParallelEnables parallelization of a query. (Defined by ParallelEnumerable.)
Public Extension MethodAsQueryableConverts an IEnumerable to an IQueryable. (Defined by Queryable.)
Public Extension MethodCast<TResult>Casts the elements of an IEnumerable to the specified type. (Defined by Enumerable.)
Public Extension MethodOfType<TResult>Filters the elements of an IEnumerable based on a specified type. (Defined by Enumerable.)

Explicit interface implemetationPrivate methodICollection.CopyToInfrastructure. Copies the elements of the collection to an Array, starting at a particular Array index.
Explicit interface implemetationPrivate propertyICollection.IsSynchronizedInfrastructure. Gets a value that indicates whether access to the EventLogEntryCollection is synchronized (thread-safe).
Explicit interface implemetationPrivate propertyICollection.SyncRootInfrastructure. Gets an object that can be used to synchronize access to the EventLogEntryCollection object.

Use the EventLogEntryCollection class when reading the entries associated with an EventLog instance. The Entries property of the EventLog class is a collection of all the entries in the event log.

Because new entries are appended to the existing list, stepping through the collection enables you to access the entries that were created after you originally created the EventLogEntryCollection. However, after you view the entire list, it is not updated with new entries.

The following example demonstrates how to obtain event log information from an EventLogEntryCollection object.

using System;
using System.Collections;
using System.Diagnostics;

class EventLogEntryCollection_Item
    public static void Main()
            string myLogName = "MyNewLog";
            // Check if the source exists.
            if (!EventLog.SourceExists("MySource"))
                // Create the source.
                // An event log source should not be created and immediately used.
                // There is a latency time to enable the source, it should be created
                // prior to executing the application that uses the source.
                // Execute this sample a second time to use the new source.
                EventLog.CreateEventSource("MySource", myLogName);
                Console.WriteLine("Creating EventSource");
                Console.WriteLine("Exiting, execute the application a second time to use the source.");
                // The source is created.  Exit the application to allow it to be registered.
                // Get the EventLog associated if the source exists.
                myLogName = EventLog.LogNameFromSourceName("MySource", ".");

            // Create an EventLog instance and assign its source.
            EventLog myEventLog2 = new EventLog();
            myEventLog2.Source = "MySource";
            // Write an informational entry to the event log.
            myEventLog2.WriteEntry("Successfully created a new Entry in the Log");
            // Create a new EventLog object.
            EventLog myEventLog1 = new EventLog();
            myEventLog1.Log = myLogName;

            // Obtain the Log Entries of "MyNewLog".
            EventLogEntryCollection myEventLogEntryCollection =
            Console.WriteLine("The number of entries in 'MyNewLog' = "
               + myEventLogEntryCollection.Count);

            // Display the 'Message' property of EventLogEntry.
            for (int i = 0; i < myEventLogEntryCollection.Count; i++)
                Console.WriteLine("The Message of the EventLog is :"
                   + myEventLogEntryCollection[i].Message);

            // Copy the EventLog entries to Array of type EventLogEntry.
            EventLogEntry[] myEventLogEntryArray =
               new EventLogEntry[myEventLogEntryCollection.Count];
            myEventLogEntryCollection.CopyTo(myEventLogEntryArray, 0);
            IEnumerator myEnumerator = myEventLogEntryArray.GetEnumerator();
            while (myEnumerator.MoveNext())
                EventLogEntry myEventLogEntry = (EventLogEntry)myEnumerator.Current;
                Console.WriteLine("The LocalTime the Event is generated is "
                   + myEventLogEntry.TimeGenerated);
        catch (Exception e)
            Console.WriteLine("Exception:{0}", e.Message);

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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