HttpClient Exception on GetAsync method #18249
Description
Hi all,
since I updated from RC1 to 1.0 I'm getting an exception using HttpClient.GetAsync method.
Here the exception:
Exception type System.TypeLoadException
Exception message: Could not load type 'System.Collections.Concurrent.ConcurrentDictionary`2' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
Stack trace: at System.Net.Http.Formatting.JsonMediaTypeFormatter..ctor()
at System.Net.Http.Formatting.MediaTypeFormatterCollection.CreateDefaultFormatters()
at System.Net.Http.HttpContentExtensions.get_DefaultMediaTypeFormatterCollection()
at WebApi.Controllers.MyController.Get(String word) in C:\MyController.cs:line 30
at lambda_method(Closure , Object , Object[] )
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.d__28.MoveNext()
It seems a conflict between .Net4.0 and .Net4.5, my project reference "net461", IIS tries to get the method from mscorlib (net45) and it fails because it's getting actually mscorlib (net40). This method doesnt exists in mscorlib(net40) but in mscorlib(net45).
Here my project.json:
{
"dependencies": {
"Microsoft.NETCore.App": {
"version": "1.0.0",
"type": "platform"
},
"Microsoft.AspNetCore.Mvc": "1.0.0",
"Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
"Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
"Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
"Microsoft.Extensions.Configuration.FileExtensions": "1.0.0",
"Microsoft.Extensions.Configuration.Json": "1.0.0",
"Microsoft.Extensions.Logging": "1.0.0",
"Microsoft.Extensions.Logging.Console": "1.0.0",
"Microsoft.Extensions.Logging.Debug": "1.0.0",
"Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
"Microsoft.NETCore.Portable.Compatibility": "1.0.1",
"Microsoft.EntityFrameworkCore": "1.0.0",
"Microsoft.EntityFrameworkCore.Relational": "1.0.0",
"Microsoft.EntityFrameworkCore.SqlServer": "1.0.0",
"Microsoft.EntityFrameworkCore.Design": "1.0.0-preview2-final",
"Microsoft.Extensions.WebEncoders.Core": "1.0.0-rc1-final",
"SapientGuardian.MySql.Data": "6.9.812",
"Microsoft.AspNetCore.Mvc.Formatters.Xml": "1.0.0",
"Microsoft.AspNetCore.StaticFiles": "1.0.0",
"MimeKit": "1.4.1",
"MailKit": "1.4.1",
"System.Xml.XmlDocument": "4.0.1",
"AspNet.Security.OAuth.Validation": "1.0.0-alpha2-final",
"OpenIddict": "1.0.0-*",
"Microsoft.AspNetCore.Authentication.JwtBearer": "1.0.0",
"Serilog": "2.1.0",
"Serilog.Sinks.File": "2.1.0",
"Microsoft.AspNet.WebApi.Client": "5.2.3"
},
"tools": {
"Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final",
"Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview2-final"
},
"frameworks": {
"netcoreapp1.0": {
"imports": [
"dotnet5.6",
"net461"
]
}
},
"buildOptions": {
"emitEntryPoint": true,
"preserveCompilationContext": true
},
"runtimeOptions": {
"configProperties": {
"System.GC.Server": true
}
},
"publishOptions": {
"include": [
"wwwroot",
"Views",
"Areas/**/Views",
"appsettings.json",
"web.config"
]
},
"scripts": {
"postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
}
}