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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Collections;
namespace System.Configuration.Provider
{
public class ProviderCollection : ICollection
{
private readonly Hashtable _hashtable;
private bool _readOnly;
public ProviderCollection()
{
_hashtable = new Hashtable(10, StringComparer.OrdinalIgnoreCase);
}
public ProviderBase this[string name] => _hashtable[name] as ProviderBase;
public IEnumerator GetEnumerator()
{
return _hashtable.Values.GetEnumerator();
}
public int Count => _hashtable.Count;
public bool IsSynchronized => false;
public object SyncRoot => this;
void ICollection.CopyTo(Array array, int index)
{
_hashtable.Values.CopyTo(array, index);
}
public virtual void Add(ProviderBase provider)
{
if (_readOnly)
throw new NotSupportedException(SR.CollectionReadOnly);
if (provider == null)
throw new ArgumentNullException(nameof(provider));
if ((provider.Name == null) || (provider.Name.Length < 1))
throw new ArgumentException(SR.Config_provider_name_null_or_empty);
_hashtable.Add(provider.Name, provider);
}
public void Remove(string name)
{
if (_readOnly)
throw new NotSupportedException(SR.CollectionReadOnly);
_hashtable.Remove(name);
}
public void SetReadOnly()
{
if (_readOnly)
return;
_readOnly = true;
}
public void Clear()
{
if (_readOnly)
throw new NotSupportedException(SR.CollectionReadOnly);
_hashtable.Clear();
}
public void CopyTo(ProviderBase[] array, int index)
{
((ICollection)this).CopyTo(array, index);
}
}
}
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