Remote WebRequest Get/Post

RemotePost req = new RemotePost(postUrl);
req.Timeout = 3;
 
req.Add("FirstName", "First");
req.Add("LastName", "Last");
 
string response = req.Post();
string response = req.Get();
 
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        public class RemotePost
        {
            private System.Collections.Specialized.NameValueCollection Inputs = new System.Collections.Specialized.NameValueCollection();
            private string Url = string.Empty;
 
            /// <summary>
            /// number of seconds for timeout
            /// </summary>
            public int Timeout = 0;
 
            /// <summary>
            /// Url to post to
            /// </summary>
            public RemotePost(string url)
            {
                Url = url;
            }
 
            /// <summary>
            /// Parameters to add to the post
            /// </summary>
            /// <param name="name">parameter name</param>
            /// <param name="value">parameter value</param>
            public void Add(string name, string value)
            {
                Inputs.Add(name, value);
            }
 
            /// <summary>
            /// Posts data to server using POST method
            /// </summary>
            /// <returns></returns>
            public string Post()
            {
                string postData = String.Empty;
 
                int keyscount = Inputs.Keys.Count;
 
                for (int i = 0; i < keyscount; i++)
                    postData += "&" + Inputs.Keys[i] + "=" + HttpUtility.UrlEncode(Inputs[Inputs.Keys[i]]);
 
                if (postData.Length > 0)
                    postData = postData.Substring(1);
 
                HttpWebRequest wr = WebRequest.Create(Url) as HttpWebRequest;
                wr.Method = "POST";
                wr.ContentType = "application/x-www-form-urlencoded";
 
                using (StreamWriter requestWriter = new StreamWriter(wr.GetRequestStream()))
                {
                    requestWriter.Write(postData);
                }
 
                return GetResponse(wr);
            }
 
            /// <summary>
            /// Posts data to server using GET method
            /// </summary>
            /// <returns></returns>
            public string Get()
            {
                string postData = String.Empty;
 
                int keyscount = Inputs.Keys.Count;
 
                for (int i = 0; i < keyscount; i++)
                    postData += "&" + Inputs.Keys[i] + "=" + HttpUtility.UrlEncode(Inputs[Inputs.Keys[i]]);
 
                if (postData.Length > 0)
                    postData = postData.Substring(1);
 
                string postUrl = Url.Contains("?") ? (Url + "&" + postData) : (Url + "?" + postData);
 
                HttpWebRequest wr = WebRequest.Create(postUrl) as HttpWebRequest;
                wr.Method = "GET";
 
                return GetResponse(wr);
            }
 
            private string GetResponse(HttpWebRequest wr)
            {
                wr.Timeout = Timeout * 1000; //millisecond timeout
 
                HttpWebResponse response = (HttpWebResponse)wr.GetResponse();
 
                if (response.StatusCode != HttpStatusCode.OK)
                    return String.Empty;
 
                using (Stream responseStream = response.GetResponseStream())
                {
                    using (StreamReader readerStream = new StreamReader(responseStream, System.Text.Encoding.UTF8))
                    {
                        return readerStream.ReadToEnd();
                    }
                }
            }
        }