elasticsearch - 无法加载文件或程序集 'netstandard'或其依赖项之一

Question

我将解决方案ElasticSearch.net和嵌套库升级到7.1.0版本。
部署代码后，出现以下错误:

BadImageFormatException: Could not load file or assembly 'netstandard' or one of its dependencies. Reference assemblies should not be loaded for execution.  They can only be loaded in the Reflection-only loader context. (Exception from HRESULT: 0x80131058)
System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +0
   System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +225
   System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean forIntrospection) +110
   System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +22
   System.Reflection.Assembly.Load(String assemblyString) +34
   System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +48

我试图将库复制到我部署的服务器上，但这不起作用。

升级详情:
1.)ElasticSearch.net 5.6.1至7.1.0

2.)巢5.6.1至7.1.0

3.)安装了.NetFramework 4.7.3

4.)VS2017

从nuget软件包管理器升级。

Answer 1

通过在csproj文件中手动添加netstandard库的引用已解决了该问题，如下所示:

<Reference Include="netstandard">
  <Private>True</Private>
</Reference> 

上述解决方法是从- You must add a reference to assembly 'netstandard, Version=2.0.0.0提供的