405 method not allowed Web API

Question

This error is very common, and I tried all of the solutions and non of them worked. I have disabled WebDAV publishing in control panel and added this to my web config file:

  <handlers>   <remove name="WebDAV"/>   </handlers>   <modules runAllManagedModulesForAllRequests="true">   <remove name="WebDAVModule"/>   </modules> 

The error still persists. This is the controller:

   static readonly IProductRepository repository = new ProductRepository();      public Product Put(Product p)     {         return repository.Add(p);     } 

Method implementation:

 public Product Add(Product item)     {         if (item == null)         {             throw new ArgumentNullException("item");         }         item.Id = _nextId++;         products.Add(item);         return item;     } 

And this is where the exception is thrown:

client.BaseAddress = new Uri("http://localhost:5106/"); client.DefaultRequestHeaders.Accept.Add( new MediaTypeWithQualityHeaderValue("application/json"));       var response = await client.PostAsJsonAsync("api/products", product);//405 exception 

Any suggestions?

Answer 1

You are POSTing from the client:

await client.PostAsJsonAsync("api/products", product); 

not PUTing.

Your Web API method accepts only PUT requests.

So:

await client.PutAsJsonAsync("api/products", product);