CODEWITHSUNDEEP
jsonasynchronousasp.net-web-apihttprequest
Jay
Jay

Reputation: 3082

No MediaTypeFormatter error when trying to parse ReadAsFormDataAsync result in WebAPI

I have created a WebAPI project to help capture statements from a TinCan learning course but I am having extreme difficulty in retrieving any of the Request payload details. Within this payload I pass the whole statement that I am trying to capture but upon trying to read using:

var test = Request.Content.ReadAsFormDataAsync().Result.ToString();

I get the following error message:

No MediaTypeFormatter is available to read an object of type 'FormDataCollection' from content with media type 'application/json'.

I have tried Converting the result object to JSON to overcome this problem but it has not been any use. Do I need to configure json somewhere in the configuration? I have tried adding 

var appXmlType = config.Formatters.XmlFormatter.SupportedMediaTypes.FirstOrDefault(t => t.MediaType == "application/xml");
        config.Formatters.XmlFormatter.SupportedMediaTypes.Remove(appXmlType);

and also:

var jsonFormatter = config.Formatters.JsonFormatter;
        config.Formatters.Insert(0, jsonFormatter);

to my WebApiConfig.cs file as answered in another question of how to return json but I cannot seem to pass this error. I have also set config.formatter to accept application/json but this also has not worked

CONTROLLER CODE

public void Put([FromBody]string statementId)
    {   
        var test = Request.Content.ReadAsFormDataAsync().Result;

        System.Diagnostics.EventLog.WriteEntry("Application", "/xAPI/PUT has been called", System.Diagnostics.EventLogEntryType.Error);
    }

Upvotes: 2

Views: 2669

Answers (1)

Maggie Ying
Maggie Ying

Reputation: 10175

From the error message you have provided, it seems like request content is in application/json. ReadAsFormDataAsync() can only read content of type application/x-www-form-urlencoded.

In this case, you can use ReadAsAsync<> if you have the type you want to be deserialized defined or simply use ReadAsStringAsync<> if you just want to read the content as a string.

Upvotes: 5

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