System.Configuration.HandlerBase.RemoveRequiredAttribute C# (CSharp) Метод

        internal static string RemoveRequiredAttribute(XmlNode node, string name) {
            return RemoveRequiredAttribute(node, name, false/*allowEmpty*/);
        }

        /// <devdoc>
        /// Given a partially composed config object (possibly null)
        /// and some input from the config system, return a
        /// further partially composed config object
        /// </devdoc>
        public virtual object Create(Object parent, Object context, XmlNode section)
        {
            Hashtable res;

            // start res off as a shallow clone of the parent

            if (parent == null)
            {
                res = new Hashtable(StringComparer.OrdinalIgnoreCase);
            }
            else
            {
                res = (Hashtable)((Hashtable)parent).Clone();
            }

            // process XML

            HandlerBase.CheckForUnrecognizedAttributes(section);

            foreach (XmlNode child in section.ChildNodes)
            {
                // skip whitespace and comments, throws if non-element
                if (HandlerBase.IsIgnorableAlsoCheckForNonElement(child))
                {
                    continue;
                }

                // handle <add>, <remove>, <clear> tags
                if (child.Name == "add")
                {
                    HandlerBase.CheckForChildNodes(child);
                    String key = HandlerBase.RemoveRequiredAttribute(child, KeyAttributeName);
                    String value;
                    if (ValueRequired)
                    {
                        value = HandlerBase.RemoveRequiredAttribute(child, ValueAttributeName);
                    }
                    else
                    {
                        value = HandlerBase.RemoveAttribute(child, ValueAttributeName);
                    }
                    HandlerBase.CheckForUnrecognizedAttributes(child);

                    if (value == null)
                    {
                        value = "";
                    }

                    res[key] = value;
                }
                else if (child.Name == "remove")
                {
                    HandlerBase.CheckForChildNodes(child);
                    String key = HandlerBase.RemoveRequiredAttribute(child, KeyAttributeName);
                    HandlerBase.CheckForUnrecognizedAttributes(child);

                    res.Remove(key);
                }
                else if (child.Name.Equals("clear"))
                {
                    HandlerBase.CheckForChildNodes(child);
                    HandlerBase.CheckForUnrecognizedAttributes(child);
                    res.Clear();
                }
                else
                {
                    HandlerBase.ThrowUnrecognizedElement(child);
                }
            }

            return(res);
        }