How to Send Request JSON Data to API In C# ASP.Net | Microsoft ASP Solutions

How to Send Request JSON Data to API In C# ASP.Net

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CS Page Code Below

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public void res()
    {
        string pname = "Rajat";
        string pmob = "9873045620";
        string dmob = "9929607023";
        string ptype = "NEW";
        try
        {

            
            var httpWebRequest = (HttpWebRequest)WebRequest.Create("Your API URL");
            httpWebRequest.Method = "POST";
            httpWebRequest.PreAuthenticate = true;                         
            httpWebRequest.Accept = "application/x-www-form-urlencoded";

                        
            httpWebRequest.Headers["key"] = "Your Header Key";
            
            using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
            {                
                
                string json = new JavaScriptSerializer().Serialize(new
                {
                    patient_name = pname,
                    patient_mobile = pmob,
                    patient_type = ptype,
                    doctor_mobile = dmob
                });

                streamWriter.Write(json);
                streamWriter.Flush();
                streamWriter.Close();

                var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
                using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
                {
                    var result = streamReader.ReadToEnd();
                    lblMess.Text = result;
                }
            }

        }
        catch (Exception ex)
        {
            lblMess.Text = ex.Message;            
        }
    }