KeyValueConfigurationCollection.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Configuration / System / Configuration / KeyValueConfigurationCollection.cs / 1305376 / KeyValueConfigurationCollection.cs
                        

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

namespace System.Configuration { 
    using System; 
    using System.Xml;
    using System.Configuration; 
    using System.Collections.Specialized;
    using System.Collections;
    using System.IO;
    using System.Text; 

    [ConfigurationCollection(typeof(KeyValueConfigurationElement))] 
    public class KeyValueConfigurationCollection : ConfigurationElementCollection { 
        private static ConfigurationPropertyCollection _properties;
 
        static KeyValueConfigurationCollection() {
            // Property initialization
            _properties = new ConfigurationPropertyCollection();
        } 

        protected internal override ConfigurationPropertyCollection Properties { 
            get { 
                return _properties;
            } 
        }


        // 
        // Constructor
        // 
        public KeyValueConfigurationCollection() : 
            base(StringComparer.OrdinalIgnoreCase) {
            internalAddToEnd = true; 
        }

        //
        // Accessors 
        //
        protected override bool ThrowOnDuplicate { 
            get { 
                return false;
            } 
        }

        public new KeyValueConfigurationElement this[string key] {
            get { 
                return (KeyValueConfigurationElement)BaseGet(key);
            } 
#if DONT_COMPILE 
            // if we ever expose this element this will be handy
            set { 
                int index = -1; // append by default
                KeyValueConfigurationElement tempElement = (KeyValueConfigurationElement)BaseGet(key);
                if (tempElement != null) {
                    index = BaseIndexOf(tempElement); 
                    BaseRemoveAt(index);
                } 
                BaseAdd(index, value); 
            }
#endif 
        }

        public String[] AllKeys {
            get { 
                return StringUtil.ObjectArrayToStringArray(BaseGetAllKeys());
            } 
        } 

        // 
        // Methods
        //

        public void Add(KeyValueConfigurationElement keyValue) { 
            // Need to initialize in order to get the key
            keyValue.Init(); 
 
            // the appsettings add works more like a namevalue collection add in that it appends values
            // when add is called and teh key already exists. 
            KeyValueConfigurationElement oldValue = (KeyValueConfigurationElement)BaseGet(keyValue.Key);
            if (oldValue == null) {
                BaseAdd(keyValue);
            } 
            else {
                oldValue.Value += "," + keyValue.Value; 
                int index = BaseIndexOf(oldValue); 
                BaseRemoveAt(index);
                BaseAdd(index, oldValue); 
            }


        } 

        public void Add(String key, String value) { 
            KeyValueConfigurationElement element = new KeyValueConfigurationElement(key, value); 
            Add(element);
        } 

#if DONT_COMPILE
        public void Remove(KeyValueConfigurationElement keyValue)
        { 
            if (BaseIndexOf(keyValue) >= 0)
                BaseRemove(keyValue.Key); 
        } 
#endif
 
        public void Remove(string key) {
            BaseRemove(key);
        }
 
        public void Clear() {
            BaseClear(); 
        } 

        protected override ConfigurationElement CreateNewElement() { 
            return new KeyValueConfigurationElement();
        }

        protected override object GetElementKey(ConfigurationElement element) { 
            return ((KeyValueConfigurationElement)element).Key;
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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