<PackageReference Include="NETStandard.Library" Version="2.0.3" />

System.ComponentModel.Design.ActiveDesignerEventHandler

namespace System.Runtime.Serialization { public static class XPathQueryGenerator { public static string CreateFromDataContractSerializer(Type type, MemberInfo[] pathToMember, StringBuilder rootElementXpath, out XmlNamespaceManager namespaces); public static string CreateFromDataContractSerializer(Type type, MemberInfo[] pathToMember, out XmlNamespaceManager namespaces); } } namespace System.ComponentModel.Design { public delegate void ActiveDesignerEventHandler (object sender, ActiveDesignerEventArgs e); }