如何将参数从MVC5项目传递到Rest WCF服务

Question

I have a WCF Rest Service(using Json) that gets the username and password and returns Customer information. This is the Method interface.

   //Get Customer by Name
    [OperationContract]
    [WebInvoke
       (UriTemplate = "/GetCustomerByName",
        Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped,
        ResponseFormat = WebMessageFormat.Json,
        RequestFormat = WebMessageFormat.Json
        )]
    List<Model.Customer> GetCustomerByName(Model.CustomerName CustomerData);

I need to call this method in MVC5 and pass parameter to it. Not sure how to pass parameter.

This is how I call the service:

readonly string customerServiceUri = "http://localhost:63674/CSA.svc/";
 public ActionResult SearchByName(InputData model)
    {
        List<CustomerModel> customerModel = new List<CustomerModel>();

        if (ModelState.IsValid)
        {
            if (model != null)
            {
                using (WebClient webclient = new WebClient())
                {
                    string jsonStr = webclient.DownloadString(string.Format("{0}GetCustomerByName?CustomerData={1}", customerServiceUri, model));

                    if (!string.IsNullOrWhiteSpace(jsonStr))
                    {
                        var result = JsonConvert.DeserializeObject<Models.CustomerModel.Result>(jsonStr);

                        if (result != null)
                        {
                            customerModel = result.GetCustomersByNameResult;
                        }
                    }
                }
            }
        }
        return View(customerModel);
    }

I am getting error right on this line:

 string jsonStr = webclient.DownloadString(string.Format("{0}GetCustomerByName?CustomerData={1}", customerServiceUri, model));

and this is the error:

The remote server returned an error: (405) Method Not Allowed.

and this is InputData class:

 public class InputData
  {

      public string First_Name { get; set; }
      public string Last_Name { get; set; }
  }

Answer 1

The problem is that the line of code is calling the service, wrong. Because you pass the values in url, the line of code is making an GET request, not a POST . If you are willing to make a POST request please follow this answer .

What is wrong with the code?

string jsonStr = webclient.DownloadString(string.Format("{0}GetCustomerByName?CustomerData={1}", customerServiceUri, model));

1) This error is thrown (405) Method Not Allowed because you expecting because a POST request is expected and is made a GET request.

2) This will output something like this: http://localhost:63674/CSA.svc/GetCustomerByName?CustomerData=[SolutionName].[ProjectName].InputData

This is happening because C# don't know how to convert InputData to string in the way you want, for this you have to override the method ToString() .

Possible solution

Try to make a GET request, you have to call the service in this way (with few modifications)

string jsonStr = webclient.DownloadString(string.Format("{0}GetCustomerByName?firstName={1}&lastName={2}", customerServiceUri, model.First_Name, model.Last_Name));

You have to modify the service to match the example i made for the GET request.

//Get Customer by Name
[OperationContract]
[WebGet(UriTemplate = "GetCustomerByName?firstName={firstName}&lastName={lastName}")]
List<Model.Customer> GetCustomerByName(string firstName, string lastName);