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https://entityframeworkcore.com/knowledge-base/46963170/entity-framework-core-error--no-parameterless-constructor-defined-for-this-object
Most likely, you're running Visual Studio 2015, which doesn't have full .NET Core support. Basically, in previous versions of EF, DbContext had a parameterless constructor, and this version of the scaffold generator is depending on that. In EF Core, DbContext does not have a parameterless constructor, so the generator is choking on that.
https://stackoverflow.com/questions/3571084/only-parameterless-constructors-and-initializers-are-supported-in-linq-to-entiti
Although it is late to answer, it could still help someone in distress. Since LINQ to entities do not support the parameter-less object constructions. However, the projection methods for IEnumerable. So prior to selection, just convert your IQueryable to IEnumerable by using this code:
https://support.microsoft.com/en-us/help/330592/error-message-when-you-serialize-a-class-by-using-the-xmlserializer-cl
Jun 09, 2019 · The System.InvalidOperationException exception is raised because the default constructor is not defined for the class that the XmlSerializer tried to serialize. Resolution To resolve this problem, define a parameterless constructor.
https://github.com/Microsoft/aspnet-api-versioning/issues/181
Sep 06, 2017 · Are you using some form of dependency injection (DI)? Web API does not support DI out-of-the-box. The default implementation of the IHttpControllerActivator only supports creating controller types with parameterless constructors via Activator.CreateInstance. API versioning does not get involved with nor modify the way that controllers are activated.
https://www.devexpress.com/Support/Center/Question/Details/T596757/formdatacollection-does-not-contain-a-parameterless-constructor
Jan 17, 2018 · For what ever reason, the data is not binding from the grid to the post events. The actions are being called. the data is blank. (I have added a parameterless constructor to see if that helped) However, data is being sent from the client. So my guess is …
https://www.definitions.net/definition/parameterless
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https://forums.asp.net/t/2162762.aspx?No+parameterless+constructor+defined+for+this+object+
ASP.NET Forums / General ASP.NET / Getting Started / No parameterless constructor defined for this object. No parameterless constructor defined for this object. RSS
https://github.com/dotnet/corefx/issues/41102
Sep 14, 2019 · Closing as duplicate of #38569 which considers parameterless/custom constructor support. We shouldn't do any unguided probing here - the …
https://www.codeproject.com/questions/1157812/how-to-fix-parameterless-constructor-is-required-f
How to fix parameterless constructor is required for collections and enumerators. ... Could not deserialize global::WorldServer.Data.Templates.Npc2.NpcEquippedGear. Parameterless constructor is required for collections and enumerators. So how can i do to fix this error? ... The lazily-initialized type does not have a public, parameterless ...
https://social.msdn.microsoft.com/Forums/en-US/8b900389-674f-4f64-addd-dc8b935ed09b/object-cannot-be-serialized-because-it-does-not-have-a-parameterless-constructor
The service is: [WebMethod(Description="Requester pings URL of EA to see if it is alive. I get the following error: multispeakq.msp.errorObject cannot be serialized because it does not have a parameterless constructor.
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