autofac

问题 earlier I used Microsoft unity IOC. Unity container has RegisterType & Resolve method. So I able to resolve same interface with multiple implementation. but latest autofac (var builder = new ContainerBuilder();) builder hasn't resolve() method and we can't manually build (builder.Build();). Anyone has any idea, how to convert below code base to autofac or how to use resolve method with dependency registration. container.RegisterType<IQueryManager, FirstManager>(new TypedParameter(typeof

问题 I write following register type in autofac: builder.RegisterType<NoteBookContext>() .As<DbContext>() .WithParameter(ResolvedParameter.ForNamed<DbContext>("connectionstring")); In fact I write this code for injecting NoteBookContext with a connectionstring parameter. (ie : new NoteBookContext(string connectionstring) ) Now , How can I Pass value of parameter at runtime? 回答1: The WithParameter method has a overload that accept delegate for dynamic instanciation. The first argument is a

问题 I write following register type in autofac: builder.RegisterType<NoteBookContext>() .As<DbContext>() .WithParameter(ResolvedParameter.ForNamed<DbContext>("connectionstring")); In fact I write this code for injecting NoteBookContext with a connectionstring parameter. (ie : new NoteBookContext(string connectionstring) ) Now , How can I Pass value of parameter at runtime? 回答1: The WithParameter method has a overload that accept delegate for dynamic instanciation. The first argument is a

问题 I'm using asp.net + Autofac. I'm trying to load a custom JSON configuration file, and either create/instance an IConfiguration instance based on that, or at least include my file into whatever IConfiguration asp.net builds by default. My problem is that asp.net seems to override the dependency registration for IConfiguration. I can't seem to register my own IConfiguration object - the DI container will always resolve this to some instance that seems to have been generated by the asp.net

问题 I'm using asp.net + Autofac. I'm trying to load a custom JSON configuration file, and either create/instance an IConfiguration instance based on that, or at least include my file into whatever IConfiguration asp.net builds by default. My problem is that asp.net seems to override the dependency registration for IConfiguration. I can't seem to register my own IConfiguration object - the DI container will always resolve this to some instance that seems to have been generated by the asp.net

问题 I realize this question is asked a lot. But I cannot figure out the solution to this problem. The thing i am trying to resolve is create three seperate interfaces (Singleton Scoped, InstancePerRequest). And register all the services under their implemented interface, without having to manually add them to DI container. Autofac Scanning Assemblies for certain class type Autofac register assembly types Autofac assembly scanning - .NET Core Before you say duplicate hear me out. I have provided a

问题 I am using asp.net core along with Entity Framework Core . My scenario here is, I want to change the connection string at runtime based on HttpContext query string value. I am trying to pass ResolvedParameter with Reflection components as documented. But, It is not getting registered when I resolve this. Here below, I have attached my code snippet. Autofac Registration class: public class DependencyRegistrar : IDependencyRegistrar { public virtual void Register(ContainerBuilder builder) {

问题 TL;DR : Can I create a generic factory with Autofac, so that I can inject IProduct<TModel> rather than resolving it from IFactory anywhere I need it? Is there a way to move the resolving-from-factory task to the composition root? So I'm using a third party library, which exposes some generic interfaces which are created through a factory. For demonstration purposes, we'll assume that the following code is the library: Third party library mock-up : public interface IFactory { IProduct<TModel>

问题 I have a Xamarin.Forms application where I am using Autofac for DI. SO what I want is quite simple but I am unable to do something which seems like a sinch to do. So I have a class that has two constructors both of them have a single parameter and based on certain conditions I want to resolve either one. As an example, I have a class A and what I want is based on conditions B or C should be resolved. Eg: public class A { public A(B bObject) {...} public A(C cObject) {...} } But I am unable to

问题 I have a Xamarin.Forms application where I am using Autofac for DI. SO what I want is quite simple but I am unable to do something which seems like a sinch to do. So I have a class that has two constructors both of them have a single parameter and based on certain conditions I want to resolve either one. As an example, I have a class A and what I want is based on conditions B or C should be resolved. Eg: public class A { public A(B bObject) {...} public A(C cObject) {...} } But I am unable to