ConfigurationSectionHelper.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / MIT / System / Web / Mobile / ConfigurationSectionHelper.cs / 1305376 / ConfigurationSectionHelper.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Mobile 
{ 
    using System.Xml;
    using System.Configuration; 
    using System.Diagnostics;
    using System.Globalization;

    [Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")] 
    internal class ConfigurationSectionHelper
    { 
        private XmlNode _currentNode = null; 

        internal ConfigurationSectionHelper() { 
        }

        internal /*public*/ XmlNode Node
        { 
            get
            { 
                return _currentNode; 
            }
 
            set
            {
                _currentNode = value;
            } 
        }
 
        private XmlNode GetAndRemoveAttribute(String attributeName, bool required) 
        {
            XmlNode attibuteNode = _currentNode.Attributes.RemoveNamedItem(attributeName); 

            if (required && attibuteNode == null)
            {
                String msg = SR.GetString(SR.ConfigSect_MissingAttr, 
                                          attributeName);
                throw new ConfigurationErrorsException(msg, _currentNode); 
            } 

            return attibuteNode; 
        }


        internal /*public*/ String RemoveStringAttribute(String attributeName, 
            bool required)
        { 
            Debug.Assert(null != _currentNode); 

            XmlNode attributeNode = GetAndRemoveAttribute(attributeName, required); 
            if(attributeNode != null)
            {
                if(required && (attributeNode.Value != null && attributeNode.Value.Length == 0))
                { 
                    String msg = SR.GetString(SR.ConfigSect_MissingValue,
                                              attributeName); 
                    throw new ConfigurationErrorsException(msg, _currentNode); 
                }
                return attributeNode.Value; 
            }
            else
            {
                return null; 
            }
        } 
 
#if UNUSED_CODE
        internal /*public*/ bool RemoveBoolAttribute(String attributeName, 
                                        bool required,
                                        bool defaultValue)
        {
            Debug.Assert(null != _currentNode); 

            XmlNode attributeNode = GetAndRemoveAttribute(attributeName, required); 
            if(attributeNode != null) 
            {
                try 
                {
                    return bool.Parse(attributeNode.Value);
                }
                catch 
                {
                    String msg = 
                        SR.GetString(SR.ConfigSect_InvalidBooleanAttr, 
                                     attributeName);
                    throw new ConfigurationErrorsException(msg, _currentNode); 
                }
            }
            else
            { 
                return defaultValue;
            } 
 
        }
 
        internal /*public*/ int RemoveIntAttribute(String attributeName,
                                      bool required,
                                      int defaultValue)
        { 
            Debug.Assert(null != _currentNode);
 
            XmlNode attributeNode = GetAndRemoveAttribute(attributeName, required); 
            if(attributeNode != null)
            { 
                try
                {
                    return int.Parse(attributeNode.Value, CultureInfo.InvariantCulture);
                } 
                catch
                { 
                    String msg = 
                        SR.GetString(SR.ConfigSect_InvalidIntegerAttr,
                                     attributeName); 
                    throw new ConfigurationErrorsException(msg, _currentNode);
                }
            }
            else 
            {
                return defaultValue; 
            } 

        } 
#endif

        internal /*public*/ void CheckForUnrecognizedAttributes()
        { 
            Debug.Assert(null != _currentNode);
 
            if(_currentNode.Attributes.Count != 0) 
            {
                String msg = SR.GetString(SR.ConfigSect_UnknownAttr, 
                                          _currentNode.Attributes[0].Name);
                throw new ConfigurationErrorsException(msg, _currentNode);
            }
        } 

 
        internal /*public*/ bool IsWhitespaceOrComment() 
        {
            Debug.Assert(null != _currentNode); 

            return _currentNode.NodeType == XmlNodeType.Comment ||
                _currentNode.NodeType == XmlNodeType.Whitespace;
        } 

 
        internal /*public*/ void RejectNonElement() 
        {
            Debug.Assert(null != _currentNode); 

            if(_currentNode.NodeType != XmlNodeType.Element)
            {
                throw new ConfigurationErrorsException(SR.GetString(SR.ConfigSect_UnrecognizedXML), 
                                                 _currentNode);
            } 
        } 
    }
} 

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

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