2 // System.Diagnostics.EventLogEntryCollection.cs
5 // Jonathan Pryor (jonpryor@vt.edu)
7 // (C) 2002 Jonathan Pryor
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 using System.Collections;
34 using System.Diagnostics;
36 namespace System.Diagnostics {
38 public class EventLogEntryCollection : ICollection, IEnumerable {
40 readonly EventLogImpl _impl;
42 internal EventLogEntryCollection(EventLogImpl impl)
48 get { return _impl.EntryCount; }
51 public virtual EventLogEntry this [int index] {
52 get { return _impl[index]; }
55 bool ICollection.IsSynchronized {
59 object ICollection.SyncRoot {
63 public void CopyTo (EventLogEntry[] eventLogEntries, int index)
65 EventLogEntry[] entries = _impl.GetEntries ();
66 Array.Copy (entries, 0, eventLogEntries, index, entries.Length);
69 public IEnumerator GetEnumerator ()
71 return new EventLogEntryEnumerator (_impl);
74 void ICollection.CopyTo (Array array, int index)
76 EventLogEntry[] entries = _impl.GetEntries ();
77 Array.Copy (entries, 0, array, index, entries.Length);
80 private class EventLogEntryEnumerator : IEnumerator
82 internal EventLogEntryEnumerator (EventLogImpl impl)
87 object IEnumerator.Current {
88 get { return Current; }
91 public EventLogEntry Current {
94 if (_currentEntry != null)
97 if (_currentIndex >= 0 && _currentIndex < _impl.EntryCount)
98 return _impl [_currentIndex];
101 throw new InvalidOperationException ("No current EventLog"
102 + " entry available, cursor is located before the first"
103 + " or after the last element of the enumeration.");
107 public bool MoveNext ()
111 if (_currentIndex >= _impl.EntryCount) {
112 _currentEntry = null;
115 _currentEntry = _impl [_currentIndex];
118 return (_currentIndex < _impl.EntryCount);
127 readonly EventLogImpl _impl;
128 int _currentIndex = -1;
130 EventLogEntry _currentEntry;