Convert JSON data to querystring in C# GET request
19,882
Solution 1
If the json object is flat as in your example, then
string json = @"{
""name"": ""charlie"",
""num"": 123
}";
var jObj = (JObject)JsonConvert.DeserializeObject(json);
var query = String.Join("&",
jObj.Children().Cast<JProperty>()
.Select(jp=>jp.Name + "=" + HttpUtility.UrlEncode(jp.Value.ToString())));
query would be name=charlie&num=123
Solution 2
I make this code to run in .Net Core:
public static string JsonToQuery(this string jsonQuery)
{
string str = "?";
str += jsonQuery.Replace(":", "=").Replace("{","").
Replace("}", "").Replace(",","&").
Replace("\"", "");
return str;
}
Example:
var _baseURI = "http://www.example.com/";
var endPoint = "myendpoint";
ExampleObjectModel requestModel = new ExampleObjectModel();
var requestModelJson = JsonConvert.SerializeObject(requestModel);
var url = string.Format("{0}{1}{2}", _baseURI, endPoint, requestModelJson.JsonToQuery());
Author by
Mike Flynn
I am the founder and CEO of Exposure Events. Exposure Events is a tournament and league management system delivering online scheduling and conflict checker, live results, apps, free directory and more.
Updated on June 04, 2022Comments
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Mike Flynn almost 2 years
What is the best way to convert a JSON object into querystrings to append to a GET Url? The POST is straight forward and gets read by my Web API backend.
{Name: 'Mike' } = ?Name=Mike
private static string MakeRequest(HttpWebRequest req, string data) { try { if (req.Method == Verbs.POST.ToString() || req.Method == Verbs.PUT.ToString() || req.Method == Verbs.DELETE.ToString()) { var encodedData = Encoding.UTF8.GetBytes(data); req.ContentLength = encodedData.Length; req.ContentType = "application/json"; req.GetRequestStream().Write(encodedData, 0, encodedData.Length); } using (var response = req.GetResponse() as HttpWebResponse) using (var reader = new StreamReader(response.GetResponseStream())) { return reader.ReadToEnd(); } } catch (WebException we) { if(we.Response == null) { return JsonConvert.SerializeObject(new { Errors = new List<ApiError> { new ApiError(11, "API is currently unavailable") }}); } using (var response = we.Response as HttpWebResponse) using (var reader = new StreamReader(response.GetResponseStream())) { return reader.ReadToEnd(); } } }