Question

SO I am getting a response from the google translate API’s like this:

"{\"responseData\": {\"translatedText\":\"Hola Mi nombre es\"}, \"responseDetails\": null, \"responseStatus\": 200}"

My code looks like:

 private string getText(string response)
    {
        var serializer = new JavaScriptSerializer(new SimpleTypeResolver());
        translationReturnObject obj = serializer.Deserialize<translationReturnObject>(response);

        return obj.translatedText;
    }

with translationReturnObject defined like this:

[DataContract]
class translationReturnObject
{
    [DataMember(Name = "responseData")]
    public string repsonseData { get; set;}

    [DataMember(Name = "translatedText")]
    public string translatedText { get; set; }

    [DataMember(Name = "responseDetails")]
    public string responseDetails { get; set; }

    [DataMember(Name = "responseStatus")]
    public string responseStatus { get; set; }  

}

My problem is that translatedText is not getting deserialized correctly. No matter what the language being returned is (so I don’t think it is an Encoding issue) the value is null.

Any ideas on what I am doing wrong?

Answer 1

If you look at the JSON that’s returning, you’ll see that translatedText is a property of responseData. Therefore, you’ll need the following:

public class TranslationResponseData
{
    public string translatedText { get; set; }
}

public class TranslationReturnObject
{
    public TranslationResponseData repsonseData { get; set;}
    public string responseDetails { get; set; }
    public string responseStatus { get; set; }  
}

EDIT: Also, you don’t need to worry about DataContract/DataMember. JavaScriptSerializer will map the JSON name to the public property name.