Umbraco 没有为此对象定义无参数构造函数
Umbraco No parameterless constructor defined for this object
我正在尝试在 Umbraco 中渲染部分视图。我有一个 BaseLayout.cshtml,Homepage.cshtml,BaseLayoutViewModel,HomepageViewModel
这是我的 BaseLayout 视图
@inherits Umbraco.Web.Mvc.UmbracoViewPage<View_Models.BaseLayoutViewModel>
@{
Layout = null;
}
<!DOCTYPE html>
<html lang="en-gb">
<head>
</head>
<body>
@Html.Action("GetPrimaryNavbar", "PrimaryNavbar", Model) //This is there the site throws an error.
@RenderBody()
</body>
</html>
这是我的 BaseLayout 模型。首页模型继承自基本布局。
public class BaseLayoutViewModel : PublishedContentModel
{
public BaseLayoutViewModel(IPublishedContent content) : base(content)
{
}
public string PageTitle => this.GetPropertyValue<string>(FieldNames.BaseLayout.PageTitle);
public string PageDescription => this.GetPropertyValue<string>(FieldNames.BaseLayout.PageDescription);
public string NavigationName => this.GetPropertyValue<string>(FieldNames.BaseLayout.NavigationName);
}
我的 PrimaryNavbar 部分视图是：
@inherits Umbraco.Web.Mvc.UmbracoViewPage<View_Models.PrimaryNavbarViewModel>
<header>
<ul>
<li>
</li
</ul>
</header>
PrimaryNavbar 的控制器是：
public class PrimaryNavbarController : SurfaceController
{
[ChildActionOnly]
public ActionResult GetPrimaryNavbar(RenderModel model)
{
//var primaryNavbarViewModel = new PrimaryNavbarViewModel(model.Content);
return PartialView("PrimaryNavbar");//, primaryNavbarViewModel);
}
}
编辑：添加完整错误
Server Error in '/' Application.
No parameterless constructor defined for this object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.MissingMethodException: No parameterless constructor defined for this object.
Source Error:
Line 28: <body>
Line 29:
Line 30: @Html.Action("GetPrimaryNavbar", "PrimaryNavbar", Model)
Line 31:
Line 32: @RenderBody()
Stack Trace:
[MissingMethodException: No parameterless constructor defined for this object.]
System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0
System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +138
System.Activator.CreateInstance(Type type, Boolean nonPublic) +105
System.Activator.CreateInstance(Type type) +12
System.Web.Mvc.DefaultModelBinder.CreateModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Type modelType) +272
[MissingMethodException: No parameterless constructor defined for this object. Object type 'Umbraco.Web.Models.RenderModel'.]
System.Web.Mvc.DefaultModelBinder.CreateModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Type modelType) +346
System.Web.Mvc.DefaultModelBinder.BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +744
Umbraco.Web.Mvc.RenderModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +122
System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContext controllerContext, ParameterDescriptor parameterDescriptor) +460
System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContext controllerContext, ActionDescriptor actionDescriptor) +137
System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__19(AsyncCallback asyncCallback, Object asyncState) +1167
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeAction(ControllerContext controllerContext, String actionName, AsyncCallback callback, Object state) +455
System.Web.Mvc.Controller.<BeginExecuteCore>b__1c(AsyncCallback asyncCallback, Object asyncState, ExecuteCoreState innerState) +42
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) +65
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
System.Web.Mvc.Controller.BeginExecuteCore(AsyncCallback callback, Object state) +881
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
System.Web.Mvc.Controller.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) +699
System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__4(AsyncCallback asyncCallback, Object asyncState, ProcessRequestState innerState) +94
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) +65
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +539
System.Web.Mvc.ServerExecuteHttpHandlerWrapper.Wrap(Func`1 func) +27
System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) +3614
System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage) +131
System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm) +36
System.Web.Mvc.Html.ChildActionExtensions.ActionHelper(HtmlHelper htmlHelper, String actionName, String controllerName, RouteValueDictionary routeValues, TextWriter textWriter) +595
System.Web.Mvc.Html.ChildActionExtensions.Action(HtmlHelper htmlHelper, String actionName, String controllerName, RouteValueDictionary routeValues) +114
ASP._Page_Views_BaseLayout_cshtml.Execute() in c:\Users\USERNAME\documents\visual studio 2015\projectsViews\BaseLayout.cshtml:30
System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +253
System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +148
System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +122
System.Web.WebPages.<>c__DisplayClass3.<RenderPageCore>b__2(TextWriter writer) +311
System.Web.WebPages.WebPageBase.Write(HelperResult result) +108
System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName, Action`1 body) +89
System.Web.WebPages.WebPageBase.PopContext() +310
Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer) +232
System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +375
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +90
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +833
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +833
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +833
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +81
System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +186
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38
System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +29
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +65
System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +53
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +36
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +38
System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +44
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +65
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +399
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +137
我不明白为什么我会收到 "No parameterless constructor defined for this object." 有人可以帮我解决这个问题吗？
谢谢
要解决这个问题，您需要像这样发送模型：
@Html.Action("GetPrimaryNavbar", "PrimaryNavbar", new { model = Model })
我正在尝试在 Umbraco 中渲染部分视图。我有一个 BaseLayout.cshtml,Homepage.cshtml,BaseLayoutViewModel,HomepageViewModel
这是我的 BaseLayout 视图
@inherits Umbraco.Web.Mvc.UmbracoViewPage<View_Models.BaseLayoutViewModel>
@{
Layout = null;
}
<!DOCTYPE html>
<html lang="en-gb">
<head>
</head>
<body>
@Html.Action("GetPrimaryNavbar", "PrimaryNavbar", Model) //This is there the site throws an error.
@RenderBody()
</body>
</html>
这是我的 BaseLayout 模型。首页模型继承自基本布局。
public class BaseLayoutViewModel : PublishedContentModel
{
public BaseLayoutViewModel(IPublishedContent content) : base(content)
{
}
public string PageTitle => this.GetPropertyValue<string>(FieldNames.BaseLayout.PageTitle);
public string PageDescription => this.GetPropertyValue<string>(FieldNames.BaseLayout.PageDescription);
public string NavigationName => this.GetPropertyValue<string>(FieldNames.BaseLayout.NavigationName);
}
我的 PrimaryNavbar 部分视图是：
@inherits Umbraco.Web.Mvc.UmbracoViewPage<View_Models.PrimaryNavbarViewModel>
<header>
<ul>
<li>
</li
</ul>
</header>
PrimaryNavbar 的控制器是：
public class PrimaryNavbarController : SurfaceController
{
[ChildActionOnly]
public ActionResult GetPrimaryNavbar(RenderModel model)
{
//var primaryNavbarViewModel = new PrimaryNavbarViewModel(model.Content);
return PartialView("PrimaryNavbar");//, primaryNavbarViewModel);
}
}
编辑：添加完整错误
Server Error in '/' Application.
No parameterless constructor defined for this object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.MissingMethodException: No parameterless constructor defined for this object.
Source Error:
Line 28: <body>
Line 29:
Line 30: @Html.Action("GetPrimaryNavbar", "PrimaryNavbar", Model)
Line 31:
Line 32: @RenderBody()
Stack Trace:
[MissingMethodException: No parameterless constructor defined for this object.]
System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0
System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +138
System.Activator.CreateInstance(Type type, Boolean nonPublic) +105
System.Activator.CreateInstance(Type type) +12
System.Web.Mvc.DefaultModelBinder.CreateModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Type modelType) +272
[MissingMethodException: No parameterless constructor defined for this object. Object type 'Umbraco.Web.Models.RenderModel'.]
System.Web.Mvc.DefaultModelBinder.CreateModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Type modelType) +346
System.Web.Mvc.DefaultModelBinder.BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +744
Umbraco.Web.Mvc.RenderModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +122
System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContext controllerContext, ParameterDescriptor parameterDescriptor) +460
System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContext controllerContext, ActionDescriptor actionDescriptor) +137
System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__19(AsyncCallback asyncCallback, Object asyncState) +1167
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeAction(ControllerContext controllerContext, String actionName, AsyncCallback callback, Object state) +455
System.Web.Mvc.Controller.<BeginExecuteCore>b__1c(AsyncCallback asyncCallback, Object asyncState, ExecuteCoreState innerState) +42
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) +65
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
System.Web.Mvc.Controller.BeginExecuteCore(AsyncCallback callback, Object state) +881
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
System.Web.Mvc.Controller.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) +699
System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__4(AsyncCallback asyncCallback, Object asyncState, ProcessRequestState innerState) +94
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) +65
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +539
System.Web.Mvc.ServerExecuteHttpHandlerWrapper.Wrap(Func`1 func) +27
System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) +3614
System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage) +131
System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm) +36
System.Web.Mvc.Html.ChildActionExtensions.ActionHelper(HtmlHelper htmlHelper, String actionName, String controllerName, RouteValueDictionary routeValues, TextWriter textWriter) +595
System.Web.Mvc.Html.ChildActionExtensions.Action(HtmlHelper htmlHelper, String actionName, String controllerName, RouteValueDictionary routeValues) +114
ASP._Page_Views_BaseLayout_cshtml.Execute() in c:\Users\USERNAME\documents\visual studio 2015\projectsViews\BaseLayout.cshtml:30
System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +253
System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +148
System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +122
System.Web.WebPages.<>c__DisplayClass3.<RenderPageCore>b__2(TextWriter writer) +311
System.Web.WebPages.WebPageBase.Write(HelperResult result) +108
System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName, Action`1 body) +89
System.Web.WebPages.WebPageBase.PopContext() +310
Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer) +232
System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +375
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +90
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +833
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +833
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +833
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +81
System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +186
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38
System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +29
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +65
System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +53
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +36
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +38
System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +44
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +65
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +399
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +137
我不明白为什么我会收到 "No parameterless constructor defined for this object." 有人可以帮我解决这个问题吗？
谢谢
要解决这个问题，您需要像这样发送模型：
@Html.Action("GetPrimaryNavbar", "PrimaryNavbar", new { model = Model })