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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.
// See the LICENSE file in the project root for more information.
/*============================================================
**
** Interface: IDictionary
**
**
**
**
** Purpose: Base interface for all dictionaries.
**
**
===========================================================*/
namespace System.Collections {
using System;
using System.Diagnostics.Contracts;
// An IDictionary is a possibly unordered set of key-value pairs.
// Keys can be any non-null object. Values can be any object.
// You can look up a value in an IDictionary via the default indexed
// property, Items.
[System.Runtime.InteropServices.ComVisible(true)]
public interface IDictionary : ICollection
{
// Interfaces are not serializable
// The Item property provides methods to read and edit entries
// in the Dictionary.
Object this[Object key] {
get;
set;
}
// Returns a collections of the keys in this dictionary.
ICollection Keys {
get;
}
// Returns a collections of the values in this dictionary.
ICollection Values {
get;
}
// Returns whether this dictionary contains a particular key.
//
bool Contains(Object key);
// Adds a key-value pair to the dictionary.
//
void Add(Object key, Object value);
// Removes all pairs from the dictionary.
void Clear();
bool IsReadOnly
{ get; }
bool IsFixedSize
{ get; }
// Returns an IDictionaryEnumerator for this dictionary.
new IDictionaryEnumerator GetEnumerator();
// Removes a particular key from the dictionary.
//
void Remove(Object key);
}
}
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