WebApi“请求的资源不支持http方法'DELETE”

Question

Using WebApi angularjs project and trying to delete function as `

     [HttpDelete]
    public String DeleteCountry(string cntryId)
    {
        if (cntryId != null)
        {
            return repoCountry.DeleteCountry(Convert.ToInt32(cntryId));

        }
        else
        {
            return "0";

        }
    }

js function is

  $http({
            method: "delete",
            url: '/api/Country/DeleteCountry/',
            dataType: "json",
            data: { cntryId: cntryId }
        }).then(function (response) {});

Here I am getting exception

{"Message":"The requested resource does not support http method 'DELETE'."}

Insertion,update and get functionalities are working correctly.Giv a solution and why it is happening for delete only

Answer 1

Adorn your method with the Route attribute (I see this give me more control on the routing behavior in web API) and pass your data parameters as constructor args in this format: [HttpDelete, Route("{cntryId}") :

[HttpDelete, Route("{cntryId}")]
public String DeleteCountry(string cntryId)
  {
    //....
  }

in the angular controller, you can just do this:

$http.delete('/api/Country/' + cntryId).then(function (response) {
            //if you're waiting some response
        })

Answer 2

is not a webapi issue is more a the format of your query . the message says that does not support http method 'DELETE' because the webapi delete method is expecting an id as a parameter. and the route has the following format routeTemplate: "api/{controller}/{id}", to resolve your issue try to use fiddler to intercept your request and ensure that your delete request is sent as '/api/Country/DeleteCountry/'+cntryId,

Answer 3

I faced same issue and solved it finally. This is simple and stupid solution.

Earlier code

public String DeleteCountry(string cntryId)

Changed code

public String DeleteCountry(int id)

so just use 'int id' not 'cntryId'. I did not use [HttpDelete] before method name but it worked.

Answer 4

Option 1:

$http({
   method: "delete",
   url: '/api/Country/Country?cntryId=' + cntryId,
}).then(function (response) {});

Option 2:

public String DeleteDeleteCountry([FromBody]string cntryId)
{
    if (cntryId != null)
    {
        return repoCountry.DeleteCountry(Convert.ToInt32(cntryId));

    }
    else
    {
        return "0";

    }
}

Best Option:

API

[Route("{countryId}")]
public IHttpActionResult Delete(int countryId)
{
    try
    {
       repoCountry.DeleteCountry(countryId);
    }
    catch (RepoException ex)
    {
       if (ex == notfound)
          this.NotFound();
       if (ex == cantdelete)
          this.Confict();
       this.InternalServerError(ex.message);
    }
    return this.Ok();
}

Javascript

$http({
   method: "delete",
   url: '/api/country/' + cntryId,
}).then(function (response) {});

Answer 5

Assuming that u did not change the default routing. Same error can happen if u fail to declare [HttpDelete] attribute for the action in webAPI. Please try following

[HttpDelete]
public IHttpActionResult Delete(int id)
{
}

Answer 6

This will usually happen if you are trying to do a PUT or a DELETE and you don't have the API configured to allow it.

This post shows you how to solve this 405 error and get it working properly.

The easiest way to edit the ExtensionlessUrlHandler-Integrated-4.0 line in the web.config file of the Web API project

<system.webServer>
    <handlers>
        <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
        <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
    </handlers>
</system.webServer>