c# - IoC container in MVVMLight - How to pass concrete implementation to the specified element? -

-

I am currently facing the following problem with the IoC container from MVVM light - I have the interface IDataService , which is being implemented by two classes: DataService1 and DataService2 . I also have the main view model category, which has several dependencies, with one IDataService .

The issue is, I do not have MainViewModel with DataService2 , another one, how can I do it? I have tried both "instances" of IDataService and MainViewModel , such as: 

  class MainViewModel {// MainViewModel has many dependencies, Public Main Week Model (Xx, YY, Z, MM, NN, IDTA Service Service Services) {}} (...) Simple IOC Default. Registrar & lt; IDataService & gt; (() => New Data S Service 1 (), "A"); SimpleIoc.Default.Register & lt; IDataService & gt; (() => New DataService2 (), "B"); (...) var viewmodel = Simple Ioc.Default.GetInstance & lt; MainViewModel & gt; ("B"); // runtime exception

but I get a runtime exception that basically says that main view model can not be solved - which I have understood if I I want to solve it Closed Main View Model ("B"), all its dependencies must be closed. This is not what I want - I want to solve MainViewModel , in which there is a default dependency, apart from one.

How can I do this? Thanks in advance for any help I'm clearly missing something.

Hate to say, but it looks the only way. You must register a keyed factories: 

  SimpleIoc.Default.Register & lt; MainViewModel & gt; New MainViewModel (New X), New Y (), New Z (), New M (), New N (), SimpleIak Default.Gate Instance & lt; IDataService & gt; (" B "))," B ");

Comments

Post a Comment

Popular posts from this blog

java - org.apache.http.ProtocolException: Target host is not specified -

-
I have written a simple httprequest / response code and I am getting this error below: I used to type in my classpath httpclient, httpcore, common -Codecs and general logging. I am very new to Java and I do not know what's going on here. Please help me. code: import org.apache.http.client.HttpClient; Import org.apache.http.client.methods.HttpGet; Import org.apache.http.HttpResponse; Import org.apache.http.impl.client.HttpClientBuilder; Import org.apache.http.Header; Import org.apache.http.HttpHeaders; Public class UnshorteningUrl {public static zero main (string [] args throws exception {HttpGet request = zero; HTTP Client Client = HTTP ClientBuilder.credit (). Build (); Try {Request = New HTTP Gate ("trib.me/1lBFzSi"); HttpResponse httpResponse = client.execute (request); Header [] header = httpResponse.getHeaders (HttpHeaders.LOCATION); // Preconditions.checkState (headers.length == 1); String new url = header [0] .getValue (); System.out.println ("new url...
Read more

java - Gradle dependencies: compile project by relative path -

-
Is it possible to specify a dependency on another gradeal project in the granular (in android studios) outside the current project limits? For example, with a relative path like this: dependence {collection project ('../../ stdlib / dagger'}} MyApp (path / user / foo / workspace / mypad) The app (Path / User / Foo / Workspace / MyPass / App) And I have an Android Library Project with 3 subdomules: stdlib (path is / user / foo / Utilities (Path / User / Foo / Workspace / Stadlib / Utilis) http (Path / User / Foo / Workspace / Stadlib / HT) / Li> What I have to do is compile the Dagger, Util, http module in the MyApp project. The Stidelib Library module under heavy development And MyApp will grow in the form of Growth, so I do not want to push them into a Mewen repository. I am a little change. is likely to add another Gredle projects in some way? I will push the study library into the Maven repository after the source is in search of a temp...
Read more

ruby on rails - Object doesn't support #inspect when used with .include -

-
So I have participated in a glitch error that I do not even know how to debug. I am very new to the railing, so it has kicked my ass well when I use the .includes (school) seen by the student, it gives a blue box error, But when I look at any other model and .includes (school) , the school works just fine. class student & lt; ActiveRecord :: Base has has_many: relationships, foreign_key: "liker_id", dependent :: has_many: matches, foreign_key: "student_1_id", dependent :: deleted belong_to: school belong_to: conference belong_to: would_you_rather belong_to: home city belong_to: year is_to: Major and class school & lt; on the console activatecord :: Affiliate for the base: conference includes: respondent, class: "school", foreign_key: "rival_id" (e.g. For: School) Select SQL generated Select "School". * "School" from "school" "ID" IN (1) error message back NoMethodError: u...
Read more