Develop Reference

JSON Post Request In C#

I am a SQL Developer, JSON and C# are completely new to me. I am trying to get the JSON data from Rest API from elastic DB using POST method. I think my code is incorrect since I am getting all the response from the API even though I am passing string json variable in my c# code.
public static string COSMOS(string getAPiurl, string ApiUserId, string ApiPassword)
{
string url = getAPiurl;
HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(url);
webrequest.Method = "POST";
webrequest.ContentType = "application/JSON";
webrequest.Accept = "application/JSON";
String username = ApiUserId;
String password = ApiPassword;
String encoded = System.Convert.ToBase64String(System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes(username + ":" + password));
webrequest.Headers.Add("Authorization", "Basic " + encoded);
using (var streamWriter = new StreamWriter(webrequest.GetRequestStream()))
{
string json = "{\"query\":{\"bool\":{\"should\":[{\"match\":{\"platform\":{\"query\":\"COSMOS\"}}}],\"filter\":" +
"[{\"range\":{\"cu_ticketLastUpdated_date\":{\"gte\":\"2022-05-01 00:00:00\",\"lt\":" +
"\"2022-05-31 23:59:59\"}}}]}}}";
streamWriter.Write(json);
}
var httpResponse = (HttpWebResponse)webrequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
var rl = streamReader.ReadToEnd();
httpResponse.Close();
}
I am using the above code in my SSIS script component. When I am trying to debug the above code in the var rl I am getting all the response even though I am passing the filters like "filter":[{"range":{"cu_ticketLastUpdated_date":{"gte":"2022-05-01 00:00:00","lt":"2022-05-31 23:59:59"}}
Please help me with an solution.

Error while trying to Create New Product Listing in Shopify using HTTPWebRequest in C#

Here is my code below. Getting the token from shopify works fine. However while creating a new product it keeps giving me an error. I've tried everything possible and it still does not work. Any advice would be appreciated.
Here's how I call the CreateNewProduct method passing the access token from shopify and the shopname with the products endpoint.
CreateNewProduct(accessTokenDTO.access_token, "https://{myshopname}.myshopify.com/admin/api/2020-10/products.json");
Here's the method below.
public static void CreateNewProduct(string token, string Url)
{
Uri shopUri = new Uri(Url);
HttpWebRequest GETRequest = (HttpWebRequest)WebRequest.Create(shopUri);
GETRequest.ContentType = "application/json";
GETRequest.Headers.Add("X-Shopify-Access-Token", token);
GETRequest.PreAuthenticate = true;
GETRequest.Method = "PUT";
using (var streamWriter = new StreamWriter(GETRequest.GetRequestStream()))
{
string json = "{\"product\": { \"title\": \"Burton Custom Freestyle 151\", \"body_html\": \"<strong>Good snowboard!</strong>\", \"vendor\": \"Burton\", \"product_type\": \"Snowboard\", \"tags\": [ \"Barnes & Noble\", \"John's Fav\", \"\\Big Air\\]}";
streamWriter.Write(json);
streamWriter.Flush();
}
HttpWebResponse GETResponse = (HttpWebResponse)GETRequest.GetResponse();
var encoding = ASCIIEncoding.ASCII;
using (var reader = new System.IO.StreamReader(GETResponse.GetResponseStream(), encoding))
{
string responseText = reader.ReadToEnd();
Debug.WriteLine("Response Text: " + responseText);
}
GETResponse.Close();
}

400 BadRequest normally refers to the body you are sending with your request is not valid according to the api.
Wheni look at your string that is supposed to be a json, it shows invalid data at the end.
[ \"Barnes & Noble\", \"John's Fav\", \"\\Big Air\\]}";
You are missing closing quotes after Big Air. Also, not sure if those backslash are supposed to be there around Big Air but definitely the missing closing quotes would seem to be the issue

There was an issue with the json not being formatted correctly and method was a PUT instead of POST. See working code below.
public static void CreateNewProduct(string token, string Url)
{
Uri shopUri = new Uri(Url);
HttpWebRequest GETRequest = (HttpWebRequest)WebRequest.Create(shopUri);
GETRequest.ContentType = "application/json";
GETRequest.Headers.Add("X-Shopify-Access-Token", token);
GETRequest.PreAuthenticate = true;
GETRequest.Method = "POST";
using (var streamWriter = new StreamWriter(GETRequest.GetRequestStream()))
{
string json = "{\"product\": { \"title\": \"Burton Custom Freestyle 151\", \"body_html\": \"<strong>Good snowboard!</strong>\", \"vendor\": \"Burton\", \"product_type\": \"Snowboard\"} }";
streamWriter.Write(json);
streamWriter.Flush();
}
HttpWebResponse GETResponse = (HttpWebResponse)GETRequest.GetResponse();
var encoding = ASCIIEncoding.ASCII;
using (var reader = new System.IO.StreamReader(GETResponse.GetResponseStream(), encoding))
{
string responseText = reader.ReadToEnd();
Debug.WriteLine("Response Text: " + responseText);
}
GETResponse.Close();
}

C# eBay OAuth Compliance API Authentication Problems

After many struggles, I was finally able to get the OAuth Authentication/Refresh token process down. I am certain that the tokens I am using in this process are good. But I am struggling to communicate with the Compliance API and I think it may have more to do with my headers authentication process than it does specifically the Compliance API but I am not certain. I've tried so many different combinations of the below code unsuccessfully. I've tried to do the call as a GET and a POST (the call should be a GET). I've tried it with the access token encoded and not encoded. With all of my different code combinations tried I've been getting either an authorization error or a bad request error. You can see some of the various things I've tried from commented out code. Thank you for your help.
public static string Complaince_GetViolations(string clientId, string ruName, string clientSecret, string accessToken, ILog log)
{
var clientString = clientId + ":" + clientSecret;
//byte[] clientEncode = Encoding.UTF8.GetBytes(clientString);
//var credentials = "Basic " + System.Convert.ToBase64String(clientEncode);
byte[] clientEncode = Encoding.UTF8.GetBytes(accessToken);
var credentials = "Bearer " + System.Convert.ToBase64String(clientEncode);
var codeEncoded = System.Web.HttpUtility.UrlEncode(accessToken);
HttpWebRequest request = WebRequest.Create("https://api.ebay.com/sell/compliance/v1/listing_violation?compliance_type=PRODUCT_ADOPTION")
as HttpWebRequest;
request.Method = "GET";
// request.ContentType = "application/x-www-form-urlencoded";
//request.Headers.Add(HttpRequestHeader.Authorization, credentials);
//request.Headers.Add(HttpRequestHeader.Authorization, "Bearer " + codeEncoded);
request.Headers.Add(HttpRequestHeader.Authorization, credentials);
//request.Headers.Add("Authorization", "Bearer " + codeEncoded);
request.Headers.Add("X-EBAY-C-MARKETPLACE-ID", "EBAY-US");
log.Debug("starting request.GetRequestStream");
string result = "";
var response = (HttpWebResponse)request.GetResponse();
using (var streamReader = new StreamReader(response.GetResponseStream())) //FAILS HERE
{
result = streamReader.ReadToEnd();
}
//DO MORE STUFF BELOW
return "STUFF";
}

And I finally figured out a resolution to this problem. The HTML encoding of the entire bearer string was the issue. If anyone needs this in the future your welcome. =)
HttpWebRequest request = WebRequest.Create("https://api.ebay.com/sell/compliance/v1/listing_violation?compliance_type=PRODUCT_ADOPTION")
as HttpWebRequest;
request.Method = "GET";
request.Headers.Add(HttpRequestHeader.Authorization, System.Web.HttpUtility.HtmlEncode("Bearer " + accessToken));
request.Headers.Add("X-EBAY-C-MARKETPLACE-ID", "EBAY-US");
log.Debug("starting request.GetRequestStream");
string result = null;
var response = (HttpWebResponse)request.GetResponse();
using (var streamReader = new StreamReader(response.GetResponseStream()))
{
result = streamReader.ReadToEnd();
}

Can't create workitem via webrequest in RTC

I'm trying to create a .NET web application integration with RTC, where I would insert new workitems using RTC change management services, as defined in this article (specifically in "Create a Change Request"). I was able to get the URL-to-be-used inside services.xml file (/oslc/contexts/_0_iN4G09EeGGMqpyZT5XdQ/workitems/) and my goal is to insert data using JSON.
My code is basically the following:
CookieContainer cookies = new CookieContainer();
HttpWebRequest documentPost = (HttpWebRequest)WebRequest.Create(rtcServerUrl + "/oslc/contexts/_0_iN4G09EeGGMqpyZT5XdQ/workitems/order");//"Order" is the workitem name
documentPost.Method = "POST";
documentPost.CookieContainer = cookies;
documentPost.Accept = "application/json";
documentPost.ContentType = "application/x-oslc-cm-change-request+json";
documentPost.Timeout = TIMEOUT_SERVICO;
string json = "{ \"dc:title\":\"" + title + "\", \"rtc_cm:filedAgainst\": [ { \"rdf:resource\" : \"" + rtcServerUrl + "/resource/itemOid/com.ibm.team.workitem.Category/" + idCategory + "\"} ] }"; //dc:title and rtc_cm:filedAgainst are the only two mandatory data from the workitem I'm trying to create
using (var writer = new StreamWriter(documentPost.GetRequestStream()))
{
writer.Write(json);
writer.Flush();
writer.Close();
}
Encoding encode = System.Text.Encoding.UTF8;
string retorno = null;
//Login
HttpWebRequest formPost = (HttpWebRequest)WebRequest.Create(rtcServerUrl + "/j_security_check");
formPost.Method = "POST";
formPost.Timeout = TIMEOUT_REQUEST;
formPost.CookieContainer = request.CookieContainer;
formPost.Accept = "text/xml";
formPost.ContentType = "application/x-www-form-urlencoded";
String authString = "j_username=" + userName + "&j_password=" + password; //create authentication string
Byte[] outBuffer = System.Text.Encoding.UTF8.GetBytes(authString); //store in byte buffer
formPost.ContentLength = outBuffer.Length;
System.IO.Stream str = formPost.GetRequestStream();
str.Write(outBuffer, 0, outBuffer.Length); //update form
str.Close();
//FormBasedAuth Step2:submit the login form and get the response from the server
HttpWebResponse formResponse = (HttpWebResponse)formPost.GetResponse();
var rtcAuthHeader = formResponse.Headers["X-com-ibm-team-repository-web- auth-msg"];
//check if authentication has failed
if ((rtcAuthHeader != null) && rtcAuthHeader.Equals("authfailed"))
{
//authentication failed. You can write code to handle the authentication failure.
//if (DEBUG) Console.WriteLine("Authentication Failure");
}
else
{
//login successful
HttpWebResponse responseRetorno = (HttpWebResponse)request.GetResponse();
if (responseRetorno.StatusCode != HttpStatusCode.OK)
retorno = responseRetorno.StatusDescription;
else
{
StreamReader reader = new StreamReader(responseRetorno.GetResponseStream());
retorno = "[Response] " + reader.ReadToEnd();
}
responseRetorno.Close();
formResponse.GetResponseStream().Flush();
formResponse.Close();
}
As I was managed to search for in other forums, this should be enough in order to create the workitem (I have a very similar code working to update workitems using "" URL and PUT method). However, instead of create the workitem in RTC and give me some response with item's identifier, the request's response returns a huge JSON file that ends with "oslc_cm:next":"https:///oslc/contexts/_0_iN4G09EeGGMqpyZT5XdQ/workitems/%7B0%7D?oslc_cm.pageSize=50&_resultToken=_AAY50FEkEee1V4u7RUQSjA&_startIndex=50. It's a JSON representation of the XML I receive when I access /oslc/contexts/_0_iN4G09EeGGMqpyZT5XdQ/workitems/ directly from browser, like I was trying to do a simple query inside the workitem's collection (even though I'm using POST, not GET).
I also tried to use PUT method, but then I receive a 405 status code.
Does anyone have an idea of what am I missing here? My approach is wrong, even though with the same approach I'm able to update existing workitem data in RTC?
Thanks in advance.

How to call webmethod from different website

I have website A which is done in ASP.NET and it has in default.aspx
[System.Web.Services.WebMethod]
public string GetCurrentTime(string name)
{
return "Hello " + name + Environment.NewLine + "The Current Time is: "
+ DateTime.Now.ToString();
}
May we call that method somehow from another website B using C#?
Thank you!

May we call that method somehow from another website B using C#?
Yes, you can make REQUESTS to the endpoint using C#. Either GET or POST
Simple GET request
var endPoint = "http://domain.com/default.aspx";
var webReq = (HttpWebRequest)WebRequest.Create(endPoint);
using (var response = webReq.GetResponse()) {
using (var responseStream = response.GetResponseStream()) {
var reader = new StreamReader(responseStream);
var responseString = reader.ReadToEnd();
//Do whatever with responseString
}
}
Simple POST request
var endPoint = "http://domain.com/default.aspx"
var data = "param1=hello&param2=world"
var webReq = (HttpWebRequest)WebRequest.Create(endPoint);
webReq.Method = "POST";
var bytes = Encoding.UTF8.GetBytes(data);
webReq.ContentLength = bytes.Length;
webReq.ContentType = "application/x-www-form-urlencoded";
using (var requestStream = webReq.GetRequestStream()) {
requestStream.Write(bytes, 0, bytes.Length);
}
using (var response = webReq.GetResponse()) {
using (var responseStream = response.GetResponseStream()) {
var reader = new StreamReader(responseStream);
var responseString = reader.ReadToEnd();
//Do whatever with responseString
}
}
This is a simple way of doing it. More info at MSDN.
You can use WebClient or HttpClient on the other hand. You can find example in this post also.

Yes of course, webapi is created intentionally to be called from inside the same website, another website, and from a whatever client (console, winform, wpf, mobile apps, and so on) using c# or another language.
.Net framework has avalaible various classes for calling webapi ex. HttpWebRequest, HttpClient or external libraries ex. RestSharp.