Spell API: unable to do http request

Question

Hi,

I'm trying to use the Spell API but I'm unable to do the http request.

This is my code:

using (var httpClient = new HttpClient(httpClientHandler))
{
httpClient.BaseAddress = new Uri("https://api.cognitive.microsoft.com");
httpClient.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", _bingSpellCheckApiKey);
using (var content = new FormUrlEncodedContent(new[]
{
new KeyValuePair<string, string>("Text", text)
}))
{
using (var result = await httpClient.PostAsync("/bing/v5.0/spellcheck/", content))
{
string resultContent = await result.Content.ReadAsStringAsync();
return resultContent;
}
}
}

But I always get this answer:

"{\"_type\": \"SpellCheck\", \"flaggedTokens\": []}"

I don't understand what is different from the test page at https://dev.cognitive.microsoft.com/docs/services/56e73033cf5ff80c2008c679/operations/56e73036cf5ff81048ee6727/console

Thank you, Damiano

Answer 1

What are the values of text you've tried?  The response JSON is what you get when there are no spelling errors.

Answer 2

On first glance your code seems to be ok.

What is the text that you are passing to the API?

For reference here is a complete example that works with the code you provided. Only difference is that I am using the sample text since you didn't tell us the text you were using.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace BingSpellCheckApi2
{
    class Program
    {
        static void Main(string[] args)
        {
            var res = TestThis().Result;
        }

        public static async Task<string> TestThis()
        {
            const string text = "Bill+Gatas";
            const string _bingSpellCheckApiKey = "your_api_key";
            
            using (var httpClient = new HttpClient())
            {
                httpClient.BaseAddress = new Uri("https://api.cognitive.microsoft.com");
                httpClient.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", _bingSpellCheckApiKey);
                using (var content = new FormUrlEncodedContent(new[]
                {
                    new KeyValuePair<string, string>("Text", text)
                }))
                {
                    using (var result = await httpClient.PostAsync("/bing/v5.0/spellcheck/", content))
                    {
                        string resultContent = await result.Content.ReadAsStringAsync();
                        return resultContent;
                    }
                }
            }
        }
    }
}

 

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