Web Service Isses

Question

Hi, 

I was going through the tutorials on WebServices and all was going well until I attempted to go out on my own. I am attempting to build a webservice in C# That has a dictionary within it and it picks up the dictionary from a CSV file on my computer but that's where I'm falling over. The code I have so far is from another project and I'm looking to update/change it to run with this one, This is the code I have so far;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.Services;

namespace MyService

{

    /// <summary>

    /// Summary description for Service1

    /// </summary>

    [WebService(Namespace = "http://tempuri.org/")]

    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

    [System.ComponentModel.ToolboxItem(false)]

    // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. 

    // [System.Web.Script.Services.ScriptService]

    public class Service1 : System.Web.Services.WebService

    {

        [WebMethod]

        [XmlRoot("dictionary")]

        public class SerializableDictionary<TKey, TValue> : Dictionary<TKey, TValue>, IXmlSerializable

        {

            #region IXmlSerializable Members

            public System.Xml.Schema.XmlSchema GetSchema()

            {

                return null;

            }

            public void ReadXml(System.Xml.XmlReader reader)

            {

                XmlSerializer keySerializer = new XmlSerializer(typeof(TKey));

                XmlSerializer valueSerializer = new XmlSerializer(typeof(TValue));

                bool wasEmpty = reader.IsEmptyElement;

                reader.Read();

                if (wasEmpty)

                    return;

                while (reader.NodeType != System.Xml.XmlNodeType.EndElement)

                {

                    reader.ReadStartElement("item");

                    reader.ReadStartElement("key");

                    TKey key = (TKey)keySerializer.Deserialize(reader);

                    reader.ReadEndElement();

                    reader.ReadStartElement("value");

                    TValue value = (TValue)valueSerializer.Deserialize(reader);

                    reader.ReadEndElement();

                    this.Add(key, value);

                    reader.ReadEndElement();

                    reader.MoveToContent();

                }

                reader.ReadEndElement();

            }

            public void WriteXml(System.Xml.XmlWriter writer)

            {

                XmlSerializer keySerializer = new XmlSerializer(typeof(TKey));

                XmlSerializer valueSerializer = new XmlSerializer(typeof(TValue));

                foreach (TKey key in this.Keys)

                {

                    writer.WriteStartElement("item");

                    writer.WriteStartElement("key");

                    keySerializer.Serialize(writer, key);

                    writer.WriteEndElement();

                    writer.WriteStartElement("value");

                    TValue value = this[key];

                    valueSerializer.Serialize(writer, value);

                    writer.WriteEndElement();

                    writer.WriteEndElement();

                }

            }

Can anyone tell me where I'm going wrong? Or what I should change to get it to pick up my text file and use it as a dictionary? Really what I'm trying to do is input a word and the meaning appear. That is what is in my CSV document. 

Thanks for any help/advice.