簡單的噴油器 - 自定義WebViewPage

我有一個小應用程序（現在）使用翻譯。我的翻譯服務被稱爲翻譯（ITranslator）。簡單的噴油器 - 自定義WebViewPage

我的問題是我不想在每個控制器（它返回一個視圖）中檢索這個類，所以我可以在我的視圖中使用它。

我有一個ListService類似的問題（我存儲我所有的SelectListItem列表）。

CustomWebViewPage

public abstract class CustomViewPage<TModel> : WebViewPage<TModel> 
{ 
    readonly IScriptFactory scriptFactory; 
    readonly IMembership membership; 
    readonly IListService listService; 
    readonly ITranslator translator; 

    IHtmlString path; 

    public IMembership Membership { get { return this.membership; } } 
    public override IPrincipal User { get { return this.membership.User; } } 
    public IListService Lists { get { return this.listService; } } 
    public ITranslator Translator { get { return this.translator; } } 

    public CustomViewPage(IScriptFactory scriptFactory, IMembership membership, 
     IListService listService, ITranslator translator) 
    { 
     this.scriptFactory = scriptFactory; 
     this.membership = membership; 
     this.listService = listService; 
     this.translator = translator; 
    } 

    public IHtmlString OwnScriptsPath 
    { 
     get { return path ?? (path = scriptFactory.Create(this.Html).ToHtmlString()); } 
    } 

    private string languageHtml = 
     "<meta name=\"language\" content=\"" + membership.CurrentLanguage + "\">"; 
    public IHtmlString MetaLanguage { get { return MvcHtmlString.Create(languageHtml); } } 
}

與用法：

<div> 
    @Lists.GetNationalities(Model.NationalityId) 
</div>

但是，在運行我有以下錯誤應用程序時：

'[NAMESPACE].CustomViewPage' does not contain a constructor that takes 0 arguments

但是，如果我創建第二個構造函數Simple-Injector會拋出一個錯誤sinc它不支持多個構造函數。

我該如何實現我想要的，或者不可能？

編輯

完整的堆棧跟蹤

c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\vs\520dfaa2\f5e4578c\App_Web_index.cshtml.a8d08dba.jtlk7fxz.0.cs(40): error CS1729: 'SportsHub.SDK.Infrastructure.CustomViewPage' does not contain a constructor that takes 0 arguments

at System.Web.Compilation.AssemblyBuilder.Compile() 
at System.Web.Compilation.BuildProvidersCompiler.PerformBuild() 
at System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) 
at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate) 
at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate) 
at System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean throwIfNotFound) at System.Web.Compilation.BuildManager.GetCompiledType(VirtualPath virtualPath) 
at System.Web.Compilation.BuildManager.GetCompiledType(String virtualPath) 
at System.Web.Mvc.BuildManagerWrapper.System.Web.Mvc.IBuildManager.GetCompiledType(String virtualPath) 
at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) 
at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) 
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) 
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) 
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) 
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<>c__DisplayClass2b.<BeginInvokeAction>b__1c() 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult)

編輯2

由於@StriplingWarrior和@Steven建議，我用財產注入，但它不似乎正在努力WebViewPage

我在一項服務上進行了測試，並且Property注入成功，但在此課程中，屬性爲null。 PS：我使用get; set方法公開屬性，

新的ViewPage：

public abstract class CustomViewPage<TModel> : WebViewPage<TModel> 
{ 
    [Inject] 
    public IScriptFactory scriptFactory { get; set; } 
    [Inject] 
    public IMembership membership { get; set; } 
    [Inject] 
    public IListService listService { get; set; } 
    [Inject] 
    public ITranslator translator { get; set; } 

    IHtmlString scriptsPath; 
    public IHtmlString OwnScriptsPath() 
    { 
     if (scriptsPath == null) 
     { 
      scriptsPath = scriptFactory.Create(this.Html).ToHtmlString(); 
     } 
     return scriptsPath; 
    } 

    /// <summary> 
    /// Renders the current user language with a meta tag 
    /// </summary> 
    public IHtmlString MetaLanguage() 
    { 
     return MvcHtmlString.Create("<meta name=\"language\" content=\"" + membership.CurrentLanguage + "\">"); 
    }

對於InjectAttribute我已經按照以下documents。

來源

2016-08-01 Leandro Soares

這可能是相關的：http://stackoverflow.com/questions/7656195/can-you-inject-dependencies-into-a-constructor-of-a-custom-webviewpage-using-an – StriplingWarrior

@StriplingWarrior I'我已經看到了這些具有注入屬性的例子但簡單注入器不提供它們 –

請向我們提供您正在獲取的異常的完整堆棧跟蹤。 – Steven

您必須使用像this這樣的寄存器依賴容器。這就是說，您可以指定所有接口以及ASP.NET將調用SimpleInject來解析依賴關係時的匹配實現。

您還可以創建一個參數的構造函數是這樣的：

public CustomViewPage() : base(new ScriptFactory(), new Membership()...) { }

但我不會建議...那最好的辦法是有這種依賴解析邏輯工作。

來源

2016-08-01 22:09:20

簡單的噴油器 - 自定義WebViewPage

回答

相關問題