Microsoft.Web.Administration.ConfigurationLockCollection.CheckName C# (CSharp) Method

        private void CheckName(string name)
        {
            bool isAttribute = (_lockType & ConfigurationLockType.Attribute) == ConfigurationLockType.Attribute;

            if (_valid_name_hash == null)
            {
                _valid_name_hash = new Hashtable();
                foreach (ConfigurationAttributeSchema prop in _element.Schema.AttributeSchemas)
                {
                    _valid_name_hash.Add(prop.Name, true);
                }

                /* add the add/remove/clear names of the
                 * default collection if there is one */
                if (!isAttribute)
                {
                    ConfigurationElementCollection c = _element.GetCollection();
                    foreach (var addName in _element.Schema.CollectionSchema.AddElementNames.Split(','))
                    {
                        _valid_name_hash.Add(addName, true);
                    }

                    _valid_name_hash.Add(c.Schema.CollectionSchema.ClearElementName, true);
                    _valid_name_hash.Add(c.Schema.CollectionSchema.RemoveElementName, true);
                }

                string[] valid_name_array = new string[_valid_name_hash.Keys.Count];
                _valid_name_hash.Keys.CopyTo(valid_name_array, 0);

                _valid_names = String.Join(",", valid_name_array);
            }

            if (_valid_name_hash[name] == null)
                throw new ServerManagerException(
                        String.Format("The {2} '{0}' is not valid in the locked list for this section.  The following {3} can be locked: '{1}'",
                                   name, _valid_names, isAttribute ? "attribute" : "element", isAttribute ? "attributes" : "elements"));
        }