Using the HttpWebRequest and HttpWebResponse Objects : HttpWebRequest « Communication « Silverlight

1. Silverlight
2. Communication
3. HttpWebRequest

Using the HttpWebRequest and HttpWebResponse Objects

    

<UserControl x:Class='SilverlightApplication3.MainPage'
    xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' 
    xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
    xmlns:d='http://schemas.microsoft.com/expression/blend/2008' 
    xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006' 
    mc:Ignorable='d' 
    d:DesignWidth='640' 
    d:DesignHeight='480'>
       <Grid x:Name="LayoutRoot" Background="LightBlue">
              <TextBlock Text="To:"/>
       <TextBox x:Name="To" />
       <TextBlock Text="From:"/>
       <TextBox x:Name="From"/>
       <TextBlock Text="Subject:"/>
       <TextBox x:Name="Subject"/>
       <TextBlock Text="Message:"/>
       <TextBox x:Name="Body" AcceptsReturn="True" />
       <Button x:Name="SendBtn" Content="Send"/>
       <TextBlock x:Name="StatusText"/>
    </Grid>
</UserControl>
//File:Page.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;

using System.Net;
using System.IO;

namespace SilverlightApplication3
{
    public partial class MainPage : UserControl
    {
        public MainPage()
         {
            InitializeComponent();

            SendBtn.Click += new RoutedEventHandler(DoRequest);
         }

        void DoRequest(object sender, RoutedEventArgs e)
         {
            string serviceUrl = "http://myserver.com/mailservice.php";
            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(new Uri(serviceUrl));
            request.Method = "POST";
            request.ContentType = "application/x-form-urlencoded";
            request.BeginGetRequestStream(new AsyncCallback(requestHandler),request);

         }
         void requestHandler(IAsyncResult asyncResult){
            string postData = String.Format("ToAddr={0}&FromAddr={1}&Subject={2}&Body={3}",To.Text, From.Text, Subject.Text, Body.Text);
             HttpWebRequest request = (HttpWebRequest)asyncResult.AsyncState;
             Stream requestStream = request.EndGetRequestStream(asyncResult);

            StreamWriter writer = new StreamWriter(requestStream);
            writer.Write(postData);
            writer.Flush();
            writer.Close();

            request.BeginGetResponse(new AsyncCallback(responseHandler),request);
         }
 
         void responseHandler(IAsyncResult asyncResult){
            HttpWebRequest request = (HttpWebRequest)asyncResult.AsyncState;
            HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(asyncResult);
            if (request.HaveResponse && response.StatusCode == HttpStatusCode.OK){
                StreamReader reader = new StreamReader(response.GetResponseStream());
                StatusText.Text = reader.ReadToEnd();
                reader.Close();
            }else{
                StatusText.Text = "No Response From Mail Server";
            }
            LayoutRoot.Children.Remove(SendBtn);
         }
    }
}

   
    
    
    
  

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