hmm sometimes its necessary to send parameters to an url from a desktop application ..and here is the code to do that using httppost method….
code for class file
using System.IO;
using System.Web;
using System.Net;
using System.Collections.Specialized;
using System.Collections.Generic;
namespace Emri
{
class PostSubmit
{
public enum PostTypeEnum
{
/// <summary>
/// Does a get against the source.
/// </summary>
Get,
/// <summary>
/// Does a post against the source.
/// </summary>
Post
}
private string m_url = string.Empty;
private NameValueCollection m_values = new NameValueCollection();
private PostTypeEnum m_type = PostTypeEnum.Get;
/// <summary>
/// Default constructor.
/// </summary>
public PostSubmitter()
{
}
/// <summary>
/// Constructor that accepts a url as a parameter
/// </summary>
/// <param name=”url”>The url where the post will be submitted to.</param>
public PostSubmitter(string url)
: this()
{
m_url = url;
}
/// <summary>
/// Constructor allowing the setting of the url and items to post.
/// </summary>
/// <param name=”url”>the url for the post.</param>
/// <param name=”values”>The values for the post.</param>
public PostSubmitter(string url, NameValueCollection values)
: this(url)
{
m_values = values;
}
/// <summary>
/// Gets or sets the url to submit the post to.
/// </summary>
public string Url
{
get
{
return m_url;
}
set
{
m_url = value;
}
}
/// <summary>
/// Gets or sets the name value collection of items to post.
/// </summary>
public NameValueCollection PostItems
{
get
{
return m_values;
}
set
{
m_values = value;
}
}
/// <summary>
/// Gets or sets the type of action to perform against the url.
/// </summary>
public PostTypeEnum Type
{
get
{
return m_type;
}
set
{
m_type = value;
}
}
/// <summary>
/// Posts the supplied data to specified url.
/// </summary>
/// <returns>a string containing the result of the post.</returns>
public string Post()
{
StringBuilder parameters = new StringBuilder();
for (int i = 0; i < m_values.Count; i++)
{
EncodeAndAddItem(ref parameters, m_values.GetKey(i), m_values[i]);
}
string result = PostData(m_url, parameters.ToString());
return result;
}
/// <summary>
/// Posts the supplied data to specified url.
/// </summary>
/// <param name=”url”>The url to post to.</param>
/// <returns>a string containing the result of the post.</returns>
public string Post(string url)
{
m_url = url;
return this.Post();
}
/// <summary>
/// Posts the supplied data to specified url.
/// </summary>
/// <param name=”url”>The url to post to.</param>
/// <param name=”values”>The values to post.</param>
/// <returns>a string containing the result of the post.</returns>
public string Post(string url, NameValueCollection values)
{
m_values = values;
return this.Post(url);
}
/// <summary>
/// Posts data to a specified url. Note that this assumes that you have already url encoded the post data.
/// </summary>
/// <param name=”postData”>The data to post.</param>
/// <param name=”url”>the url to post to.</param>
/// <returns>Returns the result of the post.</returns>
private string PostData(string url, string postData)
{
HttpWebRequest request = null;
if (m_type == PostTypeEnum.Post)
{
Uri uri = new Uri(url);
request = (HttpWebRequest)WebRequest.Create(uri);
request.Method = “POST”;
request.ContentType = “application/x-www-form-urlencoded”;
request.ContentLength = postData.Length;
using (Stream writeStream = request.GetRequestStream())
{
UTF8Encoding encoding = new UTF8Encoding();
byte[] bytes = encoding.GetBytes(postData);
writeStream.Write(bytes, 0, bytes.Length);
}
}
else
{
Uri uri = new Uri(url + “?” + postData);
request = (HttpWebRequest)WebRequest.Create(uri);
request.Method = “GET”;
}
string result = string.Empty;
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
using (Stream responseStream = response.GetResponseStream())
{
using (StreamReader readStream = new StreamReader(responseStream, Encoding.UTF8))
{
result = readStream.ReadToEnd();
}
}
}
return result;
}
/// <summary>
/// Encodes an item and ads it to the string.
/// </summary>
/// <param name=”baseRequest”>The previously encoded data.</param>
/// <param name=”dataItem”>The data to encode.</param>
/// <returns>A string containing the old data and the previously encoded data.</returns>
private void EncodeAndAddItem(ref StringBuilder baseRequest, string key, string dataItem)
{
if (baseRequest == null)
{
baseRequest = new StringBuilder();
}
if (baseRequest.Length != 0)
{
baseRequest.Append(”&”);
}
baseRequest.Append(key);
baseRequest.Append(”=”);
baseRequest.Append(System.Web.HttpUtility.UrlEncode(dataItem));
}
dont forget to add reference system.web in this form…
in the form
PostSubmit post = new PostSubmit();
post.Url = “http://www.xx.com/xservice/Service.aspx”;
post.PostItems.Add(”MsgPhoneNo”, mob);
post.PostItems.Add(”MsgText”, mesg);
post.PostItems.Add(”MsgSendTime”, System.DateTime.Now.ToString());
post.Type = PostSubmit.PostTypeEnum.Post;
string result = post.Post();
in the webpage u can receive the values like this
MsgPhoneNo = Request.Form["MsgPhoneNo"].ToString();
