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//------------------------------------------------------------------------------
// <copyright file="MembershipUserCollection.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.Security {
using System;
using System.Collections;
using System.Configuration.Provider;
using System.Runtime.CompilerServices;
[TypeForwardedFrom("System.Web, Version=2.0.0.0, Culture=Neutral, PublicKeyToken=b03f5f7f11d50a3a")]
[Serializable]
public sealed class MembershipUserCollection : IEnumerable, ICollection {
private Hashtable _Indices = null;
private ArrayList _Values = null;
private bool _ReadOnly = false;
public MembershipUserCollection() {
_Indices = new Hashtable(10, StringComparer.CurrentCultureIgnoreCase);
_Values = new ArrayList();
}
public void Add(MembershipUser user) {
if (user == null) {
throw new ArgumentNullException("user");
}
if (_ReadOnly)
throw new NotSupportedException();
int pos = _Values.Add(user);
try {
_Indices.Add(user.UserName, pos);
}
catch {
_Values.RemoveAt(pos);
throw;
}
}
public void Remove(string name) {
if (_ReadOnly)
throw new NotSupportedException();
object pos = _Indices[name];
if (pos == null || !(pos is int))
return;
int ipos = (int)pos;
if (ipos >= _Values.Count)
return;
_Values.RemoveAt(ipos);
_Indices.Remove(name);
ArrayList al = new ArrayList();
foreach (DictionaryEntry de in _Indices)
if ((int)de.Value > ipos)
al.Add(de.Key);
foreach (string key in al)
_Indices[key] = ((int)_Indices[key]) - 1;
}
public MembershipUser this[string name] {
get {
object pos = _Indices[name];
if (pos == null || !(pos is int))
return null;
int ipos = (int)pos;
if (ipos >= _Values.Count)
return null;
return (MembershipUser)_Values[ipos];
}
}
public IEnumerator GetEnumerator() {
return _Values.GetEnumerator();
}
public void SetReadOnly() {
if (_ReadOnly)
return;
_ReadOnly = true;
_Values = ArrayList.ReadOnly(_Values);
}
public void Clear() {
_Values.Clear();
_Indices.Clear();
}
public int Count { get { return _Values.Count; } }
public bool IsSynchronized { get { return false; } }
public object SyncRoot { get { return this; } }
void ICollection.CopyTo(Array array, int index) {
_Values.CopyTo(array, index);
}
public void CopyTo(MembershipUser[] array, int index) {
_Values.CopyTo(array, index);
}
}
}
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