c# - How to retrieve/import object using MEF in Prism -

-

I need an object ( RuleFile ) for the whole application (* .docs) The file that will be attached to my application.

I am using Prism 5 with MEF as a dependency injection container. [Export] [Serializable (public)] Public Class Rule File: NotificationBase, IreneFile {}

I now decorate the object with [export]] < / Code> and trying to import it into one of MyViewModel but it is giving null . 

  Public class MyViewModel: ViewModelBase {[Import] Private rulesfile rulefile; // 'tap' is coming here)

Please tell me what am I missing? Or tell me another way to handle this scenario better.

Are you checking the value in the constructor? Directly decorated on the property are resolved after the constructor. If you want to use the RuleFile in the constructor, you must set this way 

  public class MyViewModel: ViewModelBase {public Niamfail RuleFile {get; Set; } [Importer resource] Public MyViewModel (RuleFile ruleFile) {RuleFile = ruleFile; }}

Alternatively, you can implement IPartImportsSatisfiedNotification , which will give you an information method to inform that the import has been resolved . This way 

  public class MyViewModel: ViewModelBase, IPartImportsSetisfiedNotification {[Import] Public Rule File RuleFile {get; Set; } Public Zero OnImportsSatisfied () {// This indicates that the import has been solved}}

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