Multipart form value post in api in C# ASP.NET web application

Question

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Method for post api call:
string xml = "";
string Type = "", EventName = "", EventPath = "", UserName = "", Password = "";

Type = "POST";
EventName = "PREAPPROVALSUBMISSION";
EventPath = "https://www.devapi.anoudapps.com/api/medical/hospital-service/v3/pre-approval";
UserName = "nova_api";
Password = "nova_api123";

ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;

var encoding = System.Text.Encoding.GetEncoding("ISO-8859-1");
byte[] headerBytes = encoding.GetBytes(UserName + ":" + Password);
string headerValue = Convert.ToBase64String(headerBytes);

CookieContainer cookies = new CookieContainer();

HttpWebRequest webRequest = (HttpWebRequest)HttpWebRequest.Create(EventPath);
webRequest.Credentials = new NetworkCredential(UserName, Password);
webRequest.Method = Type;
webRequest.Headers.Add("company", "009");
webRequest.Headers.Add("Authorization", "Basic " + headerValue);
webRequest.ContentType = "multipart/form-data";
webRequest.CookieContainer = cookies;
webRequest.KeepAlive = true;

webRequest.Accept = "application/json";

//please use below data for post
var formdata = "{{\"policyNo\":\"P2209000174\"}, {\"memberId\":\"MEM21341411\"},
{\"category\":\"001\"},{\"illness\":\"001\"},{\"priority\":\"2\"},
{\"primaryDiagnosis\":\"R93.421\"},{\"medicalRecordNo\":\"0115731\"},{\"serviceType\":\"O\"},
{\"admissionType\":\"M\"},{\"visitDate\":\"19/02/2023\"},{\"doctorLicenseNo\":\"D8622\"}
{\"currency\":\"QAR\"},{\"mobileNo\":\"55849898\"},{\"illnessDetails\":\"follow up after
treatment of UTI\"},{\"treatmentsData\":\"
{\"treatType\":\"O\",\"treatCode\":\"51741\",\"quantity\":\"1\",\"treatDesc\":\"Urine flow
study\",\"estimatedAmount\":\"600.0000\",\"remarks\":\"\"},
{\"treatType\":\"O\",\"treatCode\":\"74183\",\"quantity\":\"1\",\"treatDesc\":\"MRI Abdomen
without and with contrast \",\"estimatedAmount\":\"3450.0000\",\"remarks\":\"\"},
{\"treatType\":\"O\",\"treatCode\":\"99242\",\"quantity\":\"1\",\"treatDesc\":\"Consultation -
Specialist (All)\",\"estimatedAmount\":\"300.0000\",\"remarks\":\"\"}\"}
{\"visitNo\":\"6461204\"},{\"medicalHistory\":\"Diabetes, dyslipidemia\"}}";

string inputJson = (new JavaScriptSerializer()).Serialize(formdata);
using (var streamWriter = new StreamWriter(webRequest.GetRequestStream()))
{
streamWriter.Write(inputJson);
streamWriter.Flush();
streamWriter.Close();

var webResponse = (HttpWebResponse)webRequest.GetResponse();

using (StreamReader streamReader = new StreamReader(webResponse.GetResponseStream()))
{
DataSet dsXml = new DataSet();
xml = streamReader.ReadLine();
StringReader sr = new StringReader(xml);
dsXml.ReadXml(sr);
if (dsXml.Tables[0].Rows.Count > 0)
{
if (common.myStr(dsXml.Tables[0].Rows[0]["messageType"]) != "S")
{
Alert.ShowAjaxMsg("Invalid Qatar Id", Page);
return;
}
}
dsXml.Dispose();
}

}

What I have tried:

Error throw: HTTP Validation: unparsable request content Details:No boundary define for multipart request

Posted 6-Mar-23 17:28pm

jiten mutum

Updated 6-Mar-23 23:23pm

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1 solution

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Richard Deeming · Answer 1 · 2023-03-06T23:23:00

Solution 1

We have no idea what data the remote service is expecting, so all we can do is guess.

You have a string variable called formdata which contains pre-serialized JSON. You then serialize that already-serialized variable again, and send that doubly-serialized data to the service.

It's highly likely that the service expects you to pass in the JSON, rather than a JSON-encoded string containing JSON.

C#

...

// Don't need to serialize again:
// string inputJson = (new JavaScriptSerializer()).Serialize(formdata);

using (var streamWriter = new StreamWriter(webRequest.GetRequestStream()))
{
    streamWriter.Write(formdata);
    streamWriter.Flush();
    streamWriter.Close();

    ...

Posted 6-Mar-23 23:23pm

Richard Deeming

Comments

jiten mutum 11-Mar-23 22:52pm

Below are the credentials for posting. you can try in Postman.
Type = "POST";
EventName = "PREAPPROVALSUBMISSION";
EventPath = "https://www.devapi.anoudapps.com/api/medical/hospital-service/v3/pre-approval";
UserName = "nova_api";
Password = "nova_api123";

below are data you can use in postman:
var formdata = "{{\"policyNo\":\"P2209000174\"}, {\"memberId\":\"MEM21341411\"},
{\"category\":\"001\"},{\"illness\":\"001\"},{\"priority\":\"2\"},
{\"primaryDiagnosis\":\"R93.421\"},{\"medicalRecordNo\":\"0115731\"},{\"serviceType\":\"O\"},
{\"admissionType\":\"M\"},{\"visitDate\":\"19/02/2023\"},{\"doctorLicenseNo\":\"D8622\"}
{\"currency\":\"QAR\"},{\"mobileNo\":\"55849898\"},{\"illnessDetails\":\"follow up after
treatment of UTI\"},{\"treatmentsData\":\"
{\"treatType\":\"O\",\"treatCode\":\"51741\",\"quantity\":\"1\",\"treatDesc\":\"Urine flow
study\",\"estimatedAmount\":\"600.0000\",\"remarks\":\"\"},
{\"treatType\":\"O\",\"treatCode\":\"74183\",\"quantity\":\"1\",\"treatDesc\":\"MRI Abdomen
without and with contrast \",\"estimatedAmount\":\"3450.0000\",\"remarks\":\"\"},
{\"treatType\":\"O\",\"treatCode\":\"99242\",\"quantity\":\"1\",\"treatDesc\":\"Consultation -
Specialist (All)\",\"estimatedAmount\":\"300.0000\",\"remarks\":\"\"}\"}
{\"visitNo\":\"6461204\"},{\"medicalHistory\":\"Diabetes, dyslipidemia\"}}";

I have try without Serialize code you mention but still same error.
please try in postman and please share solution.

Multipart form value post in api in C# ASP.NET web application

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Solution 1

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Multipart form value post in api in C# ASP.NET web application

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