当我第一次启动我的网站时,我收到了这个错误
Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'
我究竟做错了什么?
我正在使用.NET 4并从Visual Studio启动该站点.
我最近唯一改变的是将Simple Injector(通过Nuget)添加到我的项目中.
这是堆栈跟踪
[TypeLoadException: Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.]
System.ModuleHandle.ResolveType(RuntimeModule module, Int32 typeToken, IntPtr* typeInstArgs, Int32 typeInstCount, IntPtr* methodInstArgs, Int32 methodInstCount, ObjectHandleOnStack type) +0
System.ModuleHandle.ResolveTypeHandleInternal(RuntimeModule module, Int32 typeToken, RuntimeTypeHandle[] typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext) +180
System.Reflection.RuntimeModule.ResolveType(Int32 metadataToken, Type[] genericTypeArguments, Type[] genericMethodArguments) +192
System.Reflection.CustomAttribute.FilterCustomAttributeRecord(CustomAttributeRecord caRecord, MetadataImport scope, Assembly& lastAptcaOkAssembly, RuntimeModule decoratedModule, MetadataToken decoratedToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, Object[] attributes, IList derivedAttributes, …Run Code Online (Sandbox Code Playgroud) 在使用VS2012,WPF 4.5和设计时数据(特别是DesignInstance属性)时,我只花了几个小时处理问题.
目标:我希望在我的WPF项目(基于MVVM)中获得设计时数据支持,无论是在VS2012还是Blend中,我都无法在生命中使MVVMLight方法始终如一地工作.
因此,我尝试使用Blend提供的标记扩展,使用内置的设计时数据支持更改为"just".
问题:请考虑以下代码:
<Window x:Class="Nova.View.AlertsView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:Nova.View"
xmlns:vm="clr-namespace:Nova.ViewModel"
mc:Ignorable="d"
DataContext="{Binding Alerts, Source={StaticResource Locator}}"
d:DataContext="{d:DesignInstance vm:DesignAlertsViewModel, IsDesignTimeCreatable=True}"
... />
Run Code Online (Sandbox Code Playgroud)
VS2012和Blend都报告"名称DesignAlertsViewModel在命名空间clr-namespace中不存在:Nova.ViewModel",即使intellisense解决它很好,并且你已经检查过一千次命名空间和类名都是正确的.