Method not found

Any idea?

Method not found: ‘Swashbuckle.Application.SwaggerEnabledConfiguration Swashbuckle.Application.HttpConfigurationExtensions.EnableSwagger(System.Web.Http.HttpConfiguration, System.Action`1<Swashbuckle.Application.SwaggerDocsConfig>)’.

[phhlho]

Hoping I can help others that might run into this issue. To debug what was happening, I disabled the PreApplicationStartMethod of SwaggerConfig.cs and inserted the following code into a web api handler:

try
{
    var c = new SwaggerEnabledConfiguration(GlobalConfiguration.Configuration, s => "", new List<string>());
    Console.WriteLine("Success");
}
catch (Exception ex)
{
    Console.WriteLine("Failure");
    Console.WriteLine(ex.Message);
}

This gave me a much more descriptive error message:

Cannot convert from 'System.Web.Http.HttpConfiguration [System.Web.Http, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]' to 'System.Web.Http.HttpConfiguration [System.Web.Http, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]'

Using that error message, all I needed to do was update my binding redirects in the web.config and I was good to go:

      <dependentAssembly>
        <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" />
        <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Net.Http.WebRequest" publicKeyToken="b03f5f7f11d50a3a" />
        <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-5.0.0.0" newVersion="5.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Http" publicKeyToken="31bf3856ad364e35"/>
        <bindingRedirect oldVersion="0.0.0.0-5.0.0.0" newVersion="5.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Http.WebHost" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-5.0.0.0" newVersion="5.0.0.0" />
      </dependentAssembly>

Hope that can help someone else that finds this!

[shoaibadil]

Thanks @phhlho adding just reference if System.Web.Http, it worked for me.