I'm using netstandard2.1
library in my netcoreapp3.0
web application. When adding my service in Startup
, I'm getting the below error:
'Could not load type 'Microsoft.AspNetCore.Mvc.MvcJsonOptions' from
assembly 'Microsoft.AspNetCore.Mvc.Formatters.Json, Version=3.0.0.0
I'm also using some features from Microsoft.AspNetCore.Mvc
2.2.0 package in my class library.
Here is my library .csproj
,
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.1</TargetFramework>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.AspNetCore.Mvc" Version="2.2.0" />
</ItemGroup>
</Project>
Here is my ServiceExtensions
class from my library,
public static class ServiceExtensions
{
public static IMvcBuilder AddMyLibrary(this IMvcBuilder builder)
{
builder.Services.TryAddSingleton<IHttpContextAccessor, HttpContextAccessor>();
builder.AddJsonOptions(options =>
{
options.SerializerSettings.ContractResolver = new DefaultContractResolver();
});
builder.Services.ConfigureOptions<ConfigureLibraryOptions>();
return builder;
}
}
Here is my ConfigureLibraryOptions
class,
public class ConfigureLibraryOptions : IConfigureOptions<MvcOptions>
{
public void Configure(MvcOptions options)
{
options.ModelBinderProviders.Insert(0, new CustomBinderProvider());
}
}
Here is the ConfigureServices
from Startup
,
services.AddControllersWithViews().AddMyLibrary();
Please help on why I'm getting this error and assist on how to solve this?
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