CODEWITHSUNDEEP
c#asp.net-mvcasp.net-web-api
McNinja
McNinja

Reputation: 790

HttpConfiguration method EnableCors not found

Enabled CORS on one project, trying to do it on another existing project, however the "EnableCors" method cannot be found in during compilation:

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        config.EnableCors();

The exact compile fail error message is

'HttpConfiguration' does not contain a definition for 'EnableCors' and no extension method 'EnableCors' accepting a first argument of type 'HttpConfiguration' could be found (are you missing a using directive or an assembly reference)

I've done the same thing in this project as I have the other project: 

<package id="Microsoft.AspNet.Cors" version="5.2.3" targetFramework="net451" />
<package id="Microsoft.AspNet.WebApi.Cors" version="5.2.3" targetFramework="net451" />

This project has odata in it though...I'm not sure if that's the major difference making it fail.

Any ideas? I've also tried

Update-Package -reinstall Microsoft.AspNet.WebApi.Cors

Upvotes: 9

Views: 8550

Answers (2)

RTZ ZZ
RTZ ZZ

Reputation: 11

I had this situation today. Could not find the using libraries. Tried uniinstalling and reinstalling a couple of times Microsoft.AspNET.WebAPI.Cors as well as Asp.Net.Cors at v5.2.6. It would compile, but then after I published it showed that the references were lost again...very very odd indeed. So I took a shot and looked at the Updates in Nuget and one stood out. Microsoft.Net.Compilers. 2.8.2 and current was 2.9.0. Updated that one and tried again..boom worked. Clearly there is a dependency that caused some oddities, I don't begin to profess understanding of that quirk, but thought it might help someone out there.

Upvotes: 1

McNinja
McNinja

Reputation: 790

I had to reinstall all the packages - THEN the compile error went away.

Weird. I had built & cleaned the project several times.

Upvotes: 5

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