HandlerElementCollection.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 / cdf / src / NetFx40 / System.Xaml.Hosting / System / Xaml / Hosting / Configuration / HandlerElementCollection.cs / 1305376 / HandlerElementCollection.cs

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

namespace System.Xaml.Hosting.Configuration 
{
    using System; 
    using System.Configuration; 
    using System.Collections.Generic;
    using System.Web; 
    using System.Runtime;

    [ConfigurationCollection(typeof(HandlerElement), CollectionType = ConfigurationElementCollectionType.AddRemoveClearMapAlternate)]
    public sealed class HandlerElementCollection : ConfigurationElementCollection 
    {
        public HandlerElementCollection() 
            : base(StringComparer.OrdinalIgnoreCase) 
        {
        } 

        public override ConfigurationElementCollectionType CollectionType
        {
            get 
            {
                return ConfigurationElementCollectionType.AddRemoveClearMapAlternate; 
            } 
        }
 
        protected override bool ThrowOnDuplicate
        {
            get
            { 
                return false;
            } 
        } 

        public HandlerElement this[int index] 
        {
            get
            {
                return (HandlerElement)base.BaseGet(index); 
            }
            set 
            { 
                if (base.BaseGet(index) != null)
                { 
                    base.BaseRemoveAt(index);
                }
                this.BaseAdd(index, value);
            } 
        }
 
        public void Add(HandlerElement handlerElement) 
        {
            if (!this.IsReadOnly()) 
            {
                if (handlerElement == null)
                {
                    throw FxTrace.Exception.ArgumentNull("handlerElement"); 
                }
            } 
 
            this.BaseAdd(handlerElement, false);
        } 

        public void Clear()
        {
            base.BaseClear(); 
        }
 
        public void Remove(HandlerElement handlerElement) 
        {
            if (!this.IsReadOnly()) 
            {
                if (handlerElement == null)
                {
                    throw FxTrace.Exception.ArgumentNull("handlerElement"); 
                }
            } 
 
            this.BaseRemove(this.GetElementKey(handlerElement));
        } 

        public void Remove(string xamlRootElementType)
        {
            if (!this.IsReadOnly()) 
            {
                if (xamlRootElementType == null) 
                { 
                    throw FxTrace.Exception.ArgumentNull("xamlRootElementType");
                } 
            }

            this.BaseRemove(xamlRootElementType);
        } 

        public void RemoveAt(int index) 
        { 
            base.BaseRemoveAt(index);
        } 

        internal bool TryGetHttpHandlerType(Type hostedXamlType, out Type httpHandlerType)
        {
            httpHandlerType = null; 
            foreach (HandlerElement handler in this)
            { 
                if (handler.LoadXamlRootElementType().IsAssignableFrom(hostedXamlType)) 
                {
                    httpHandlerType = handler.LoadHttpHandlerType(); 
                    return true;
                }
            }
            return false; 
        }
 
        protected override ConfigurationElement CreateNewElement() 
        {
            return new HandlerElement(); 
        }

        protected override object GetElementKey(ConfigurationElement element)
        { 
            if (element == null)
            { 
                throw FxTrace.Exception.ArgumentNull("element"); 
            }
            return ((HandlerElement)element).Key; 
        }
    }
}
 

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

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