<PackageReference Include="System.Configuration.ConfigurationManager" Version="4.6.0-preview.18571.3" />

NameValueConfigurationElement

namespace System.Configuration { public sealed class NameValueConfigurationElement : ConfigurationElement { private static readonly ConfigurationPropertyCollection s_properties; private static readonly ConfigurationProperty s_propName; private static readonly ConfigurationProperty s_propValue; protected internal override ConfigurationPropertyCollection Properties => s_properties; [ConfigurationProperty("name", IsKey = true, DefaultValue = "")] public string Name { get { return (string)base[s_propName]; } } [ConfigurationProperty("value", DefaultValue = "")] public string Value { get { return (string)base[s_propValue]; } set { base[s_propValue] = value; } } static NameValueConfigurationElement() { s_propName = new ConfigurationProperty("name", typeof(string), string.Empty, ConfigurationPropertyOptions.IsKey); s_propValue = new ConfigurationProperty("value", typeof(string), string.Empty, ConfigurationPropertyOptions.None); s_properties = new ConfigurationPropertyCollection { s_propName, s_propValue }; } internal NameValueConfigurationElement() { } public NameValueConfigurationElement(string name, string value) { base[s_propName] = name; base[s_propValue] = value; } } }