ExtensionElementCollection.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / Configuration / ExtensionElementCollection.cs / 1 / ExtensionElementCollection.cs
                        

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

namespace System.ServiceModel.Configuration 
{
    using System; 
    using System.Configuration; 

    [ConfigurationCollection(typeof(ExtensionElement), CollectionType = ConfigurationElementCollectionType.BasicMap)] 
    public class ExtensionElementCollection : ServiceModelConfigurationElementCollection
    {
        public ExtensionElementCollection()
            : base(ConfigurationElementCollectionType.BasicMap, ConfigurationStrings.Add) 
        {
        } 
 
        protected override void BaseAdd(ConfigurationElement element)
        { 
            this.EnforceUniqueElement((ExtensionElement)element);
            base.BaseAdd(element);
        }
 
        protected override void BaseAdd(int index, ConfigurationElement element)
        { 
            this.EnforceUniqueElement((ExtensionElement)element); 
            base.BaseAdd(index, element);
        } 

        protected override object GetElementKey(ConfigurationElement element)
        {
            if (null == element) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("element"); 
            } 

            ExtensionElement configElementKey = (ExtensionElement) element; 
            return configElementKey.Name;
        }

        void EnforceUniqueElement(ExtensionElement element) 
        {
            Type elementType = Type.GetType(element.Type, false); 
 
            foreach (ExtensionElement extension in this)
            { 
                if (element.Name.Equals(extension.Name, StringComparison.Ordinal))
                {
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationErrorsException(
                        SR.GetString(SR.ConfigDuplicateExtensionName, element.Name))); 
                }
 
                if (null != elementType) 
                {
                    if (elementType.Equals(Type.GetType(extension.Type, false))) 
                    {
                        throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationErrorsException(
                            SR.GetString(SR.ConfigDuplicateExtensionType, element.Type)));
                    } 
                }
                else 
                { 
                    if (element.Type.Equals(extension.Type, StringComparison.OrdinalIgnoreCase))
                    { 
                        throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationErrorsException(
                            SR.GetString(SR.ConfigDuplicateExtensionType, element.Type)));
                    }
                } 
            }
        } 
 
        protected override bool ThrowOnDuplicate
        { 
            get
            {
                return true;
            } 
        }
    } 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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