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//------------------------------------------------------------------------------
// <copyright file="BaseCollection.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
// <owner current="true" primary="true">Microsoft</owner>
// <owner current="true" primary="false">Microsoft</owner>
// <owner current="false" primary="false">Microsoft</owner>
//------------------------------------------------------------------------------
namespace System.Data {
using System;
using System.Collections;
using System.ComponentModel;
using System.Globalization;
/// <devdoc>
/// <para>Provides the base functionality for creating collections.</para>
/// </devdoc>
public class InternalDataCollectionBase : ICollection {
internal static CollectionChangeEventArgs RefreshEventArgs = new CollectionChangeEventArgs(CollectionChangeAction.Refresh, null);
//==================================================
// the ICollection methods
//==================================================
/// <devdoc>
/// <para>Gets the total number of elements in a collection.</para>
/// </devdoc>
[
Browsable(false)
]
public virtual int Count {
get {
return List.Count;
}
}
public virtual void CopyTo(Array ar, int index) {
List.CopyTo(ar, index);
}
public virtual IEnumerator GetEnumerator() {
return List.GetEnumerator();
}
[
Browsable(false)
]
public bool IsReadOnly {
get {
return false;
}
}
[Browsable(false)]
public bool IsSynchronized {
get {
// so the user will know that it has to lock this object
return false;
}
}
// Return value:
// > 0 (1) : CaseSensitve equal
// < 0 (-1) : Case-Insensitive Equal
// = 0 : Not Equal
internal int NamesEqual(string s1, string s2, bool fCaseSensitive, CultureInfo locale) {
if (fCaseSensitive) {
if (String.Compare(s1, s2, false, locale) == 0)
return 1;
else
return 0;
}
// Case, kana and width -Insensitive compare
if (locale.CompareInfo.Compare(s1, s2,
CompareOptions.IgnoreCase | CompareOptions.IgnoreKanaType | CompareOptions.IgnoreWidth) == 0) {
if (String.Compare(s1, s2, false, locale) == 0)
return 1;
else
return -1;
}
return 0;
}
[Browsable(false)]
public object SyncRoot {
get {
return this;
}
}
protected virtual ArrayList List {
get {
return null;
}
}
}
}
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