using System.Collections; namespace System.Configuration { public sealed class ElementInformation { private readonly ConfigurationElement _thisElement; private ConfigurationException[] _errors; private PropertyInformationCollection _internalProperties; public PropertyInformationCollection Properties => _internalProperties ?? (_internalProperties = new PropertyInformationCollection(_thisElement)); public bool IsPresent => _thisElement.ElementPresent; public bool IsLocked { get { if ((_thisElement.ItemLocked & ConfigurationValueFlags.Locked) != 0) return (_thisElement.ItemLocked & ConfigurationValueFlags.Inherited) != ConfigurationValueFlags.Default; return false; } } public bool IsCollection { get { ConfigurationElementCollection configurationElementCollection = _thisElement as ConfigurationElementCollection; if (configurationElementCollection == null && _thisElement.Properties.DefaultCollectionProperty != null) configurationElementCollection = (_thisElement[_thisElement.Properties.DefaultCollectionProperty] as ConfigurationElementCollection); return configurationElementCollection != null; } } public string Source => _thisElement.Values.GetSourceInfo(_thisElement.ElementTagName)?.FileName; public int LineNumber => _thisElement.Values.GetSourceInfo(_thisElement.ElementTagName)?.LineNumber ?? 0; public Type Type => _thisElement.GetType(); public ConfigurationValidatorBase Validator => _thisElement.ElementProperty.Validator; public ICollection Errors => _errors ?? (_errors = GetReadOnlyErrorsList()); internal ElementInformation(ConfigurationElement thisElement) { _thisElement = thisElement; } internal PropertySourceInfo PropertyInfoInternal() { return _thisElement.PropertyInfoInternal(_thisElement.ElementTagName); } internal void ChangeSourceAndLineNumber(PropertySourceInfo sourceInformation) { _thisElement.Values.ChangeSourceInfo(_thisElement.ElementTagName, sourceInformation); } private ConfigurationException[] GetReadOnlyErrorsList() { ArrayList errorsList = _thisElement.GetErrorsList(); int count = errorsList.Count; ConfigurationException[] array = new ConfigurationException[errorsList.Count]; if (count != 0) errorsList.CopyTo(array, 0); return array; } } }