ASP.NET Webservice

I may be going at this from the wrong direction. I'm fairly new to .net web services and was looking for a little help.

I have a geolocation webservice I got online and I wanted 开发者_如何学Pythonto bind the results to a listbox or a dataview but am unable too.

I've created a web proxy called net.webservicex.www that points to the webservice at.. http://www.webservicex.net/geoipservice.asmx

Here's my c# code.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace web_services
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            net.webservicex.www.GeoIPService myProxy = new net.webservicex.www.GeoIPService(); // proxy object
            string ipAddress, result;

            ipAddress = txtIpAddress.Text;

            result = myProxy.GetGeoIP("64.106.166.130");
            lstResults.DataSource = result;
            lstResults.DataMember = "IP";

        }
    }
}

The error I'm recieving is Error

Cannot implicitly convert type 'web_services.net.webservicex.www.GeoIP' to 'string' at line 24

If someone could give me some tips or idea's that would be great.

Thanks! Paul

You don't need to put it in the result string

lstResults.DataSource = myProxy.GetGeoIP("64.106.166.130");

Since the object returned by your webservice is not enumerable, You could trick it by putting it into an a enumerable Type:

List<web_services.net.webservicex.www.GeoIP> resultList = new List<web_services.net.webservicex.www.GeoIP>();
resultList.Add(myProxy.GetGeoIP("64.106.166.130"));
lstResults.DataSource = resultList;

Looking at the wsdl for this web service it seems that the call to the GetGeoIP method returns an object, not a string.

This is why the compiler is complaining. You could either change the type of result to the object it is expecting or use the var keyword.

This line is at fault:

result = myProxy.GetGeoIP("64.106.166.130");

The object returned by that method is not a string, it's a web_services.net.webservicex.www.GeoIP.

You've declared result as a string, which doesn't match. Perhaps there is a ToString() method on the GeoIP class. If so, you could change your code to:

string ipAddress;
web_services.net.webservicex.www.GeoIP result;
// or maybe: object result;

ipAddress = txtIpAddress.Text;

result = myProxy.GetGeoIP("64.106.166.130");

And depending on what result looks like, you might just be able to make it your data source.

I'm a very beginner with the C# and .net but here's how I solved this and I'm sure it'll help beginners like me:

The result object looks like this:

<GeoIP><ReturnCode>1</ReturnCode><IP>11.22.33.44</IP><ReturnCodeDetails>Success</ReturnCodeDetails><CountryName>Germany</CountryName><CountryCode>GER</CountryCode></GeoIP>

So obviously (yeah right...after spitting blood on this...lol), the result cannot be a simple STRING type. So, taking samples from the above solutions I've made it like that:

Default.aspx.cs:

        mygeoip.GeoIPService getIP = new mygeoip.GeoIPService();
        string myIP = IPTextBox.Text;
        GeoIPService.mygeoip.GeoIP resultList = new GeoIPService.mygeoip.GeoIP();

        resultList = getIP.GetGeoIP(myIP);
        sCountry.Text = resultList.CountryName;
        sCountryCode.Text = resultList.CountryCode;
        sIP.Text = resultList.IP;            

Where - "mygeoip" is my WebService name (instead of "net.webservicex.www") and GeoIPService is my namespace.

Default.aspx:

        <asp:TextBox ID="IPTextBox" runat="server"></asp:TextBox>&nbsp;<asp:Button 
        ID="GetWhois" runat="server" Text="Get Whois" onclick="GetWhois_Click" />
<p><asp:Label ID="sCountry" runat="server" Text="Country: "></asp:Label></p>
<p><asp:Label ID="sCountryCode" runat="server" Text="Country: "></asp:Label></p>
<p><asp:Label ID="sIP" runat="server" Text="Country: "></asp:Label></p>

That's it - I hope I've helped beginners like me :)

    GeoIP result;

    ipAddress = "196.36.153.129";

    result = myProxy.GetGeoIP("64.106.166.130");

[WebMethod]
        public double ProcitajKursNaDan(DateTime datum, string valuta) {
            List<string> podaci = GetLines("valute.txt");

            double kurs = 0.0;

      
            for (int i = 0; i < podaci.Count; i++) {
                string[] linija = podaci[i].Split('|');
              
                string dat = linija[0];
                string val = linija[1];
                string vrednost = linija[2];

         
                dat = dat.Trim(); 
                val = val.Trim(); 
                vrednost = vrednost.Trim();

               
                DateTime datIzFajla = DateTime.ParseExact(dat, "d/M/yyyy", null);

                double kursIzFajla = Convert.ToDouble(vrednost);


                if (DateTime.Compare(datIzFajla, datum) == 0 && val == valuta)
                    kurs = kursIzFajla;
            }


            return kurs;
        }

        [WebMethod]
        public bool UpisiKursNaDan(DateTime datum, string valuta, double Kurs) {
            string date = datum.ToString("d/M/yyyy");
            string linijaZaUpis = date + " | " + valuta + " | " + Kurs.ToString();

            bool success = false;

            try
            {
                StreamWriter sw = new StreamWriter(Server.MapPath("podaci/valute.txt"), true);
                sw.WriteLine(linijaZaUpis);
                sw.Close();

                success = true;
            }
            catch {
                success = false;
            }
            return success;
        }

        [WebMethod]
        public List<string> ProcitajSveValute() {
            List<string> linije = GetLines("valute.txt");

            List<string> ValuteIzFajla = new List<string>();

            for (int i = 0; i < linije.Count; i++) {
                string linija = linije[i];
                string valuta = linija.Split('|')[1];
                valuta = valuta.Trim();
                ValuteIzFajla.Add(valuta);
            }

            List<string> ValuteKraj = ValuteIzFajla.Distinct().ToList();
            return ValuteKraj;
             //        try
    //        {
    //            if (!IsPostBack)
    //            {
    //                Service1 servis = new Service1();
    //                List<string> lista = servis.ProcitajSveValute().ToList<string>();
    //                for (int i = 0; i < lista.Count(); i++)
    //                {
    //                    DropDownList1.Items.Add(lista[i]);
    //                }

    //            }
    //        }
    //        catch (Exception ex)
    //        {
    //            Response.Write(ex.Message);
    //        }
    //    }

    //    protected void Button1_Click(object sender, EventArgs e)
    //    {
    //        try
    //        {
    //            Service1 servis = new Service1();
    //            DateTime datum = Calendar1.SelectedDate;
    //            string valuta = DropDownList1.SelectedItem.ToString();
    //            double kurs = Convert.ToDouble(TextBox1.Text);
    //            bool nesto = servis.UpisiKursNaDan(datum, valuta, kurs);
    //        }
    //        catch (Exception ex)
    //        {
    //            Response.Write(ex.Message);
    //        }
    //        TextBox1.Text = " ";
        }
    }
}
        //    try
        //    {
        //        if (!IsPostBack)
        //        {
        //            Service1 servis = new Service1();
        //            List<string> lista = servis.ProcitajSveValute().ToList<string>();
        //            for (int i = 0; i < lista.Count(); i++)
        //            {
        //                DropDownList1.Items.Add(lista[i]);
        //            }

        //        }
        //    }
        //    catch (Exception ex)
        //    {
        //        Response.Write(ex.Message);
        //    }
        //}

        //protected void Button1_Click(object sender, EventArgs e)
        //{
        //    try
        //    {
        //        Service1 servis = new Service1();
        //        DateTime datum = Calendar1.SelectedDate;
        //        string valuta = DropDownList1.SelectedItem.ToString();
        //        double kurs = servis.ProcitajKursNaDan(datum, valuta);
        //        Label1.Text = kurs.ToString();
        //        if (kurs == 0)
        //        {
        //            Label1.Text = "Ne postoji kursna lista za tu valutu na taj datum!";
        //        }
        //    }
        //    catch (Exception ex)
        //    {
        //        Response.Write(ex.Message);
        //    }
        //}