OrderedDictionary.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / System.Runtime.DurableInstancing / System / Runtime / Collections / OrderedDictionary.cs / 1305376 / OrderedDictionary.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------

namespace System.Runtime.Collections 
{
    using System; 
    using System.Collections; 
    using System.Collections.Generic;
    using System.Collections.Specialized; 

    // System.Collections.Specialized.OrderedDictionary is NOT generic.
    // This class is essentially a generic wrapper for OrderedDictionary.
    class OrderedDictionary : IDictionary, ICollection>, IEnumerable> 
    {
        OrderedDictionary privateDictionary; 
 
        public OrderedDictionary()
        { 
            this.privateDictionary = new OrderedDictionary();
        }

        public OrderedDictionary(IDictionary dictionary) 
        {
            if (dictionary != null) 
            { 
                this.privateDictionary = new OrderedDictionary();
 
                foreach (KeyValuePair pair in dictionary)
                {
                    this.privateDictionary.Add(pair.Key, pair.Value);
                } 
            }
        } 
 
        public int Count
        { 
            get
            {
                return this.privateDictionary.Count;
            } 
        }
 
        public bool IsReadOnly 
        {
            get 
            {
                return false;
            }
        } 

        public TValue this[TKey key] 
        { 
            get
            { 
                if (key == null)
                {
                    throw Fx.Exception.ArgumentNull("key");
                } 

                if (this.privateDictionary.Contains(key)) 
                { 
                    return (TValue)this.privateDictionary[(object)key];
                } 
                else
                {
                    throw Fx.Exception.AsError(new KeyNotFoundException(SRCore.KeyNotFoundInDictionary));
                } 
            }
            set 
            { 
                if (key == null)
                { 
                    throw Fx.Exception.ArgumentNull("key");
                }

                this.privateDictionary[(object)key] = value; 
            }
        } 
 
        public ICollection Keys
        { 
            get
            {
                List keys = new List(this.privateDictionary.Count);
 
                foreach (TKey key in this.privateDictionary.Keys)
                { 
                    keys.Add(key); 
                }
 
                // Keys should be put in a ReadOnlyCollection,
                // but since this is an internal class, for performance reasons,
                // we choose to avoid creating yet another collection.
 
                return keys;
            } 
        } 

        public ICollection Values 
        {
            get
            {
                List values = new List(this.privateDictionary.Count); 

                foreach (TValue value in this.privateDictionary.Values) 
                { 
                    values.Add(value);
                } 

                // Values should be put in a ReadOnlyCollection,
                // but since this is an internal class, for performance reasons,
                // we choose to avoid creating yet another collection. 

                return values; 
            } 
        }
 
        public void Add(KeyValuePair item)
        {
            Add(item.Key, item.Value);
        } 

        public void Add(TKey key, TValue value) 
        { 
            if (key == null)
            { 
                throw Fx.Exception.ArgumentNull("key");
            }

            this.privateDictionary.Add(key, value); 
        }
 
        public void Clear() 
        {
            this.privateDictionary.Clear(); 
        }

        public bool Contains(KeyValuePair item)
        { 
            if (item.Key == null || !this.privateDictionary.Contains(item.Key))
            { 
                return false; 
            }
            else 
            {
                return this.privateDictionary[(object)item.Key].Equals(item.Value);
            }
        } 

        public bool ContainsKey(TKey key) 
        { 
            if (key == null)
            { 
                throw Fx.Exception.ArgumentNull("key");
            }

            return this.privateDictionary.Contains(key); 
        }
 
        public void CopyTo(KeyValuePair[] array, int arrayIndex) 
        {
            if (array == null) 
            {
                throw Fx.Exception.ArgumentNull("array");
            }
 
            if (arrayIndex < 0)
            { 
                throw Fx.Exception.AsError(new ArgumentOutOfRangeException("arrayIndex")); 
            }
 
            if (array.Rank > 1 || arrayIndex >= array.Length || array.Length - arrayIndex < this.privateDictionary.Count)
            {
                throw Fx.Exception.Argument("array", SRCore.BadCopyToArray);
            } 

            int index = arrayIndex; 
            foreach (DictionaryEntry entry in this.privateDictionary) 
            {
                array[index] = new KeyValuePair((TKey)entry.Key, (TValue)entry.Value); 
                index++;
            }
        }
 
        public IEnumerator> GetEnumerator()
        { 
            foreach (DictionaryEntry entry in this.privateDictionary) 
            {
                yield return new KeyValuePair((TKey)entry.Key, (TValue)entry.Value); 
            }
        }

        IEnumerator IEnumerable.GetEnumerator() 
        {
            return GetEnumerator(); 
        } 

        public bool Remove(KeyValuePair item) 
        {
            if (Contains(item))
            {
                this.privateDictionary.Remove(item.Key); 
                return true;
            } 
            else 
            {
                return false; 
            }
        }

        public bool Remove(TKey key) 
        {
            if (key == null) 
            { 
                throw Fx.Exception.ArgumentNull("key");
            } 

            if (this.privateDictionary.Contains(key))
            {
                this.privateDictionary.Remove(key); 
                return true;
            } 
            else 
            {
                return false; 
            }
        }

        public bool TryGetValue(TKey key, out TValue value) 
        {
            if (key == null) 
            { 
                throw Fx.Exception.ArgumentNull("key");
            } 

            bool keyExists = this.privateDictionary.Contains(key);
            value = keyExists ? (TValue)this.privateDictionary[(object)key] : default(TValue);
 
            return keyExists;
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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OrderedDictionary.cs source code in C# .NET

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