Cannot Consume Scoped Service From Singleton в Issue 29844 в Dotnet Ru Create a single instance of the scoped service and use it for the life of the singleton; or; store a reference to the (injected) root iserviceprovider, use it to create a new iservicescope inside a using block every time you need a scoped service, and let the scope get disposed when the block exits. You need to inject iservicescopefactory to generate a scope. otherwise you are not able to resolve scoped services in a singleton. using (var scope = servicescopefactory.createscope()) { var context = scope.serviceprovider.getservice<mydbcontext>(); } edit: it's perfectly fine to just inject iserviceprovider and do the following:.
C Cannot Consume Scoped Service Imongodbcontext From Singleton I The iservicescopefactory provides a solution when you need to resolve scoped services from singletons. it allows you to create a new scope, which you can use to resolve scoped services. in middleware, we can inject scoped services into the invokeasync method. this also ensures the services use the current request's scope and lifecycle. In asp core we have 3 types of service lifetimes: singleton – they’re created first time they’re request, and every time after that the same instance will be reused. scoped – they’re created once per the request (connection) transient are created every time you request them from the di container. you should almost never consume. Technically you can create a scoped object in a singleton. you need to inject an iserviceprovider into your singleton. using this provider, when you need scoped service, call the provider: c#. copy. using (var scope = serviceprovider.createscope()) {. In more detail, a singleton service is created once and reused for the entire application's lifetime, whereas a scoped service is created once per request. injecting a scoped service into a singleton service would lead to a situation where the singleton service holds onto a scoped service that might be disposed of, leading to unpredictable behavior.
Cannot Consume Scoped Service From Singleton в Issue 29844 в Dotnet Ru Technically you can create a scoped object in a singleton. you need to inject an iserviceprovider into your singleton. using this provider, when you need scoped service, call the provider: c#. copy. using (var scope = serviceprovider.createscope()) {. In more detail, a singleton service is created once and reused for the entire application's lifetime, whereas a scoped service is created once per request. injecting a scoped service into a singleton service would lead to a situation where the singleton service holds onto a scoped service that might be disposed of, leading to unpredictable behavior. Cannot consume scoped service from singleton. the singleton is my dbcontext hooked up to my repository. this site is already live and has been live and running for a while. i'm just trying to migrate 2.0 to 2.1 and i'm getting this after following the docs to the startup changes. Cannot consume scoped from singlleton service. from your description, i'm assuming you want to use the dbcontext or usermanager in a singleton service, right? by default. in asp core identity, the dbcontext and usermanager instance are typically scoped to the lifetime of a request. if we access the scoped service from a singleton service.
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