using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net.Http;
using System.Threading.Tasks;
using System.IO;
using System.Web;
using System.Net;



namespace DisplayDataInformation
{
    public partial class DisplayDataInformation : Form
    {
        public DisplayDataInformation()
        {
            InitializeComponent();

        }

        private void Submit(object sender, EventArgs e)
        {
            localhost.Dashboard proxy = new localhost.Dashboard();
            localhost.MetaData[] pm = proxy.GetAllMetaData();
            //const string MyProgramURL = "http://localhost/MyProgramm/";
            const string apiKey = "MyKey123";
            const string ProgramId = "user1";
            const string ProgramPass = "123456";


            HttpWebRequest myHttpWReq;
            HttpWebResponse myHttpWResp;

           // myHttpWReq.ContentType

            // Make a web request to the web service
            myHttpWReq = (HttpWebRequest)System.Net.WebRequest.Create("http://localhost/MyProgram/Dashboard.asmx/GetAllMetaData" + apiKey + ProgramId + ProgramPass);

            myHttpWReq.Method = "Post";
            //myHttpWReq.Method = "Get";

            myHttpWReq.ContentLength = 0;

            // Get the response of the web service
            myHttpWResp = (HttpWebResponse)myHttpWReq.GetResponse();

            if (myHttpWResp.StatusCode == HttpStatusCode.OK)
            {
                //Create an XML reader to parse the response
                System.Xml.XmlReader reader = System.Xml.XmlReader.Create(myHttpWResp.GetResponseStream());

            }

            //set an string output to the windows form
            StringBuilder sb = new StringBuilder();


            foreach (localhost.ProjectMetaData value in pm)
            {
                sb.AppendLine(value.ProjectTitle + "    -    "
                    + value.ProjectID + "    -    "
                    + value.PublishStatus);

            }

            label1.Text = sb.ToString(); //some label on your form for output

        }

    }
}

none

I have completed my code my its giving me The remote server returned an error: (500) Internal Server Error. I been trying with Get and Post method but not luck, can anyone help me to view what I could doing wrong? Here you have my code, as you can see in comments I have tried several thing but nothing work This is an important project for me and I been looking everywhere and I have no luck.

Thanks

web api client getting the Remote server returned an error:500

api, c#

C#