35 questions
1
vote
0
answers
84
views
Blazor Server - Gracefully handling Circuit disconnects
We’re using a Blazor Server architecture with Lamar as the DI container, registering certain services as scoped to maintain one instance per Blazor circuit.
This setup generally works well. However, ...
- 3,473
0
votes
1
answer
66
views
MassTransit with Kafka and Lamar Exception
I'm running into an issue when I introduce Lamar into my MassTransit project for Kafka when trying to dynamically connect consumer topics at runtime. I have other projects using Azure Service Bus with ...
- 871
0
votes
1
answer
114
views
How to get IConfiguration in Wolverine/Lamar ServiceRegistry
I am using Wolverine as my framework of choice. Wolverine comes with Lamar as IoC Container.
I have split my container registrations into ServiceRegistries. Now I need to access IConfiguration ...
- 4,211
0
votes
1
answer
563
views
How to use Lamar with .Net 6 console application
Sorry I don't have any example code. I'm simply trying to find an example of how to use Lamar with a new .Net 6 console application and not finding anything on google.
The application is basically ...
- 5,945
0
votes
0
answers
180
views
Microsoft.Dependency.Injection similar to Lamar For and Use function
I would like to ask about Microsoft.Extensions.DependencyInjection library for IoC implementation. Is there a way to do a similar function for the Lamar library function like services.For<TService&...
- 1,201
3
votes
1
answer
1k
views
When and how to create presenters using windows forms with MVP and dependency injection
This is a question regarding dependency injection (DI) using Lamar, with windows forms (C#) using the model-view-presenter (MVP) pattern and how (and when) to initialize presenter objects.
I have a ...
- 179
0
votes
1
answer
212
views
Lamar register service with interface having multiple parameters
Brief Intro - we are using Lamar as IoC container.
I am looking for some help to understand how to register a service which implements interfaces with multiple parameters.
my interface =>
interface ...
- 75
1
vote
1
answer
403
views
Why is my Lamar Constructor Selection Configuration failing
I have a custom component with its own Migrations, DbContext & UnitOfWork. I'm trying to upgrade it to use EF Core & Lamar.
THE GOAL:
1. When people don't pass-in DbContextOptions...configure ...
- 14.1k
2
votes
0
answers
136
views
Using Oakton to check my Lamar configuration for net5 core application and getting null reference, how do I troubleshoot this?
I am setting up this diagnostic to assist in Mediator Pipeline Behavior issue where my ValidationBehavior is not being called. Below is the hostbuilder setup which is used to configure Lamar, ...
- 125
0
votes
1
answer
152
views
Conversion to Lamar - Registration - What's the equivalent of this code that uses StructureMap?
I'm migrating an ASP.NET application to .NET5 and have come across the following code that uses StructureMap...
For<ICache>().AlwaysUnique().Singleton().HttpContextScoped().Add<RedisCache>(...
- 267
3
votes
1
answer
1k
views
Injecting Runtime Objects Using Lamar
I'm trying to build a package for Lamar for a framework which I maintain.
To show what I mean by reference to StructureMap, the relevant method which was able to mix a runtime object with Service ...
- 4,053
0
votes
0
answers
541
views
Lamar with MediatR registering constructor dependencies, is there a better way?
I am using Lamar and i have added a load of dependencies which work in my controllers.
When i try to use a handler from MediarR i am having to explicitly set the Ctor dependancies like so:
...
- 1,153
0
votes
1
answer
496
views
Using the Lamar DI container, how do you build objects with a lambda given a type?
Lamar provides the following syntax for building objects with a lambda:
serviceRegistry.For<ISomeType>().Use(x => { ... });
This would allow you to resolve ISomeType which would execute the ...
- 16.2k
4
votes
1
answer
921
views
Inject different implementions in Controller based on Route
I've got an ASP.NET Core application and I'd like to use different strategies based on the Route selected.
As an example if someone navigates to /fr/Index I want to inject the French translation ...
- 2,555
0
votes
1
answer
312
views
Lamar AddScoped not working as expected net core webapi
I have netcore webapi project and i'm using Lamar for DI. I have a service MyContextService which i register as scoped
public class LifetimeRegistry : ServiceRegistry
{
public ...
- 170
0
votes
2
answers
495
views
How can I auto resolve concrete types in Lamar?
The following documentation is not working for multiple reasons:
https://jasperfx.github.io/lamar/documentation/ioc/resolving/requesting-a-concrete-type/
First the documentation states that you can ...
- 1,930
2
votes
1
answer
5k
views
Can't get Lamar (IOC) to resolve API Controller Dependencies in .NET Core 3.1
I am getting an error when trying to call the controller below using Lamar to resolve the dependencies at runtime.
I have tried .AddControllersAsServices() and without and still get the same result.
...
- 196
1
vote
1
answer
1k
views
StructureMap -> Lamar .NET Core 3.1 service creation not working
I am trying to migrate from StructureMap to Lamar (4.1.0) on the latest dotnet core release (3.1)
This project worked before the switch to Lamar, but so much has changed I am getting a touch lost.
...
- 196
1
vote
1
answer
1k
views
Getting error: 'WebHostBuilder' does not contain a definition for 'UseLamar'
I see that there is support for ASP.NET Core 3.0 but what about 3.1? I've tried with no luck. Not sure if I am doing something dumb or if it is not supported?
I've installed the latest Nuget Packages:...
- 233
0
votes
1
answer
1k
views
Lamar AddInstances with ServiceRegistry
I have a dotnet core website setup with Lamar, I have the following method in Startup.cs
public void ConfigureContainer(ServiceRegistry services)
{
...
}
I want to use AddInstances() as described ...
- 1,779
1
vote
1
answer
645
views
Can we resolve an implementation of an interface that uses other implementations of an interface using Lamar in .NET Core 3?
I'm using .NET Core 3.0 and have the following classes
public class DataProviderA: IDataProvider { }
public class DataProviderB: IDataProvider { }
public class DataProviderCombined: IDataProvider {
...
- 2,451
0
votes
1
answer
274
views
How to debug and find source of the error "NullReferenceException" when bootstrapping C# services using Lamar?
We have some services in our project which we recently ported to .NetCore 3.0. Additionally, since StructureMap is to be sunset, we removed all references and are moving to Lamar since it was the ...
2
votes
2
answers
2k
views
Proper way of registering 3rd party DI Framework (Lamar/Autofac) on Azure functions V2
Azure Functions V2 now supports .net dependency injection
In order to achieve that you need to do the following code:
[assembly: FunctionsStartup(typeof(MyNamespace.Startup))]
namespace MyNamespace
...
- 818
0
votes
1
answer
1k
views
Why won't Lamar inject type of IServiceScopeFactory in ASP.NET Core?
I am trying to implement a health check in an aspnetcore2.2 project which asserts that my Lamar container configuration is valid via IContainer.AssertConfigurationIsValid (essentially that it can ...
1
vote
1
answer
496
views
How to map two different Interface such that one Interface value get change automatically other should get reflected
I have Core in which Interface is declared as
public interface IRequestProvider
{
int SomeId { get; set; }
}
Implementation also define in same layer
and then I have another ...
- 375
2
votes
0
answers
131
views
How wan we Inject dependency while registering ServiceRegistry
I wanted to call one static class in which I need to pass IConfiguration, which will get called on startup
static class stay in Infrastructure layer I don't want to add a reference in the main ...
- 375
0
votes
1
answer
173
views
Lamar causes 500.30 error when using ServiceRegistry
I am using Lamar as the DI for .Net Core (2.2) Web API.
Program.cs
public class Program
{
public static void Main(string[] args)
{
CreateWebHostBuilder(args)....
- 2,458
1
vote
0
answers
352
views
How do you use Lamar as the IOC in NancyFx inside an ASP.NET Core web-application?
I'm building an ASP.NET Core REST Service. So far, I have a (working) ASP.NET Core (2.2) web-application that I have altered to use a Lamar IOC. It works beautifully.
I now want to add Nancy(fx) to ...
- 127
4
votes
2
answers
2k
views
How to use Lamar 2 with ASP.NET Core 3 preview?
I configured Lamar with ASP.NET Core 3 but I got an error
System.InvalidCastException: 'Unable to cast object of type 'Microsoft.Extensions.DependencyInjection.ServiceCollection' to type 'Lamar....
- 3,959
3
votes
1
answer
618
views
Lamar alternative to StructureMap Forward()
In StructureMap you could declare a Forward<,> statement, that would allow for registering a single concrete instance to be resolved by multiple interfaces from the StructureMap documentation:
...
- 4,830
0
votes
1
answer
673
views
Why after referencing nuget, my packed tool size increased much more comparing with size info provided in nuget.org?
Why is there such huge difference between what I see in nuget.org under package download size and size increase after packing with given nuget?
For example:
In nuget.org I see that download size of ...
- 567
0
votes
1
answer
389
views
Scaffolding Entity Framework Controllers with Lamar
I have Lamar set up in my .NET Core 2 project:
public class Program
{
public static void Main(string[] args)
{
IWebHost webhost = CreateWebHostBuilder(args).Build()...
- 616
5
votes
2
answers
1k
views
How to pass argument at runtime?
We're migrating from StructureMap to Lamar but I could not find the "Lamar version" for passing arguments at runtime.
We have a class that requires a string argument (pseudo code):
public class ...
- 5,764
0
votes
1
answer
2k
views
Lamar IoC Container Setup Issues
I have been attempting to get Lamar working for our dependency injection, but my lack of experience doing so has been causing me some grief.
I have a simple dummy controller:
[Route("[controller]")]
...
- 698
1
vote
1
answer
2k
views
Injecting configuration values in ASP .NET Core 2.1
As with others, I disagree with injecting IOptions into every service that may need it, and looked for other options. My goal was to inject the values needed by the service, and nothing more. I came ...
- 11