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//------------------------------------------------------------------------------
// <copyright file="ConnectionStringSettingsCollection.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Configuration {
using System;
using System.Xml;
using System.Configuration;
using System.Collections.Specialized;
using System.Collections;
using System.IO;
using System.Text;
// class ConnectionStringsSection
[ConfigurationCollection(typeof(ConnectionStringSettings))]
public sealed class ConnectionStringSettingsCollection : ConfigurationElementCollection {
private static ConfigurationPropertyCollection _properties;
static ConnectionStringSettingsCollection() {
// Property initialization
_properties = new ConfigurationPropertyCollection();
}
protected internal override ConfigurationPropertyCollection Properties {
get {
return _properties;
}
}
public ConnectionStringSettingsCollection()
: base(StringComparer.OrdinalIgnoreCase) {
}
public ConnectionStringSettings this[int index] {
get {
return (ConnectionStringSettings)BaseGet(index);
}
set {
if (BaseGet(index) != null) {
BaseRemoveAt(index);
}
BaseAdd(index, value);
}
}
new public ConnectionStringSettings this[string name] {
get {
return (ConnectionStringSettings)BaseGet(name);
}
}
public int IndexOf(ConnectionStringSettings settings) {
return BaseIndexOf(settings);
}
// the connection string behavior is strange in that is acts kind of like a
// basic map and partially like a add remove clear collection
// Overriding these methods allows for the specific behaviors to be
// patterened
protected override void BaseAdd(int index, ConfigurationElement element) {
if (index == -1) {
BaseAdd(element, false);
}
else {
base.BaseAdd(index, element);
}
}
public void Add(ConnectionStringSettings settings) {
BaseAdd(settings);
}
public void Remove(ConnectionStringSettings settings) {
if (BaseIndexOf(settings) >= 0) {
BaseRemove(settings.Key);
}
}
public void RemoveAt(int index) {
BaseRemoveAt(index);
}
public void Remove(string name) {
BaseRemove(name);
}
protected override ConfigurationElement CreateNewElement() {
return new ConnectionStringSettings();
}
protected override Object GetElementKey(ConfigurationElement element) {
return ((ConnectionStringSettings)element).Key;
}
public void Clear() {
BaseClear();
}
}
}
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