StringDictionary.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / CompMod / System / Collections / Specialized / StringDictionary.cs / 1 / StringDictionary.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

/* 
 */ 
namespace System.Collections.Specialized {
    using System.Runtime.InteropServices; 
    using System.Diagnostics;
    using System;
    using System.Collections;
    using System.ComponentModel.Design.Serialization; 
    using System.Globalization;
 
    ///  
    ///    Implements a hashtable with the key strongly typed to be
    ///       a string rather than an object.  
    /// 
    [Serializable]
    [DesignerSerializer("System.Diagnostics.Design.StringDictionaryCodeDomSerializer, " + AssemblyRef.SystemDesign, "System.ComponentModel.Design.Serialization.CodeDomSerializer, " + AssemblyRef.SystemDesign)]
    public class StringDictionary : IEnumerable { 

        internal Hashtable contents = new Hashtable(); 
 
        /// 
        /// Initializes a new instance of the System.Windows.Forms.StringDictionary class. 
        /// 
        public StringDictionary() {
        }
 

        ///  
        /// Gets the number of key-and-value pairs in the System.Windows.Forms.StringDictionary. 
        /// 
        public virtual int Count { 
            get {
                return contents.Count;
            }
        } 

 
        ///  
        /// Indicates whether access to the System.Windows.Forms.StringDictionary is synchronized (thread-safe). This property is
        ///    read-only. 
        /// 
        public virtual bool IsSynchronized {
            get {
                return contents.IsSynchronized; 
            }
        } 
 
        /// 
        ///    Gets or sets the value associated with the specified key. 
        /// 
        public virtual string this[string key] {
            get {
                if( key == null ) { 
                    throw new ArgumentNullException("key");
                } 
 
                return (string) contents[key.ToLower(CultureInfo.InvariantCulture)];
            } 
            set {
                if( key == null ) {
                    throw new ArgumentNullException("key");
                } 

                contents[key.ToLower(CultureInfo.InvariantCulture)] = value; 
            } 
        }
 
        /// 
        /// Gets a collection of keys in the System.Windows.Forms.StringDictionary.
        /// 
        public virtual ICollection Keys { 
            get {
                return contents.Keys; 
            } 
        }
 

        /// 
        /// Gets an object that can be used to synchronize access to the System.Windows.Forms.StringDictionary.
        ///  
        public virtual object SyncRoot {
            get { 
                return contents.SyncRoot; 
            }
        } 

        /// 
        /// Gets a collection of values in the System.Windows.Forms.StringDictionary.
        ///  
        public virtual ICollection Values {
            get { 
                return contents.Values; 
            }
        } 

        /// 
        /// Adds an entry with the specified key and value into the System.Windows.Forms.StringDictionary.
        ///  
        public virtual void Add(string key, string value) {
            if( key == null ) { 
                throw new ArgumentNullException("key"); 
            }
 
            contents.Add(key.ToLower(CultureInfo.InvariantCulture), value);
        }

        ///  
        /// Removes all entries from the System.Windows.Forms.StringDictionary.
        ///  
        public virtual void Clear() { 
            contents.Clear();
        } 

        /// 
        ///    Determines if the string dictionary contains a specific key
        ///  
        public virtual bool ContainsKey(string key) {
            if( key == null ) { 
                throw new ArgumentNullException("key"); 
            }
 
            return contents.ContainsKey(key.ToLower(CultureInfo.InvariantCulture));
        }

        ///  
        /// Determines if the System.Windows.Forms.StringDictionary contains a specific value.
        ///  
        public virtual bool ContainsValue(string value) { 
            return contents.ContainsValue(value);
        } 

        /// 
        /// Copies the string dictionary values to a one-dimensional  instance at the
        ///    specified index. 
        /// 
        public virtual void CopyTo(Array array, int index) { 
            contents.CopyTo(array, index); 
        }
 
        /// 
        ///    Returns an enumerator that can iterate through the string dictionary.
        /// 
        public virtual IEnumerator GetEnumerator() { 
            return contents.GetEnumerator();
        } 
 
        /// 
        ///    Removes the entry with the specified key from the string dictionary. 
        /// 
        public virtual void Remove(string key) {
            if( key == null ) {
                throw new ArgumentNullException("key"); 
            }
 
            contents.Remove(key.ToLower(CultureInfo.InvariantCulture)); 
        }
 
    }

}

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