Making a HTTP request and listening its completion in Windows Phone
m (Croozeus - - →Introduction: Added code tags) |
hamishwillee
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|platform= <!-- Compatible platforms - e.g. Symbian^1 and later, Qt 4.6 and later --> | |platform= <!-- Compatible platforms - e.g. Symbian^1 and later, Qt 4.6 and later --> | ||
|devicecompatability= <!-- Compatible devices e.g.: All* (must have internal GPS) --> | |devicecompatability= <!-- Compatible devices e.g.: All* (must have internal GPS) --> | ||
| − | |dependencies= <!-- Any other/external dependencies e.g.: Google Maps Api v1.0 --> | + | |dependencies= <!-- Any other/external dependencies e.g.: Google Maps Api v1.0 --> |
| − | |signing=<!-- Signing requirements - empty or one of: Self-Signed, DevCert, Manufacturer --> | + | |signing= <!-- Signing requirements - empty or one of: Self-Signed, DevCert, Manufacturer --> |
|capabilities= <!-- Capabilities required by the article/code example (e.g. Location, NetworkServices. --> | |capabilities= <!-- Capabilities required by the article/code example (e.g. Location, NetworkServices. --> | ||
|keywords= <!-- APIs, classes and methods (e.g. QSystemScreenSaver, QList, CBase --> | |keywords= <!-- APIs, classes and methods (e.g. QSystemScreenSaver, QList, CBase --> | ||
|language= <!-- Language category code for non-English topics - e.g. Lang-Chinese --> | |language= <!-- Language category code for non-English topics - e.g. Lang-Chinese --> | ||
|translated-by= <!-- [[User:XXXX]] --> | |translated-by= <!-- [[User:XXXX]] --> | ||
| − | |translated-from-title= <!-- Title only --> | + | |translated-from-title= <!-- Title only --> |
|translated-from-id= <!-- Id of translated revision --> | |translated-from-id= <!-- Id of translated revision --> | ||
| − | |review-by=<!-- After re-review: [[User:username]] --> | + | |review-by= <!-- After re-review: [[User:username]] --> |
|review-timestamp= <!-- After re-review: YYYYMMDD --> | |review-timestamp= <!-- After re-review: YYYYMMDD --> | ||
|update-by= <!-- After significant update: [[User:username]]--> | |update-by= <!-- After significant update: [[User:username]]--> | ||
|update-timestamp= <!-- After significant update: YYYYMMDD --> | |update-timestamp= <!-- After significant update: YYYYMMDD --> | ||
| − | |creationdate= | + | |creationdate= 20120404 |
| − | |author= | + | |author= [[User:Mandardac]] |
}} | }} | ||
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private Uri uri; | private Uri uri; | ||
public event EventHandler WebRequestCompleted; | public event EventHandler WebRequestCompleted; | ||
| − | public | + | public HTTPManager(string url) |
{ | { | ||
webdownloader = new WebClient(); | webdownloader = new WebClient(); | ||
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if (handler != null) | if (handler != null) | ||
{ | { | ||
| − | handler(sender , args); | + | handler(sender, args); |
} | } | ||
} | } | ||
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private void MakeRequest() //you can call this method from any event eg.button click, for simplicity i called it from ctor. | private void MakeRequest() //you can call this method from any event eg.button click, for simplicity i called it from ctor. | ||
{ | { | ||
| − | string | + | string loginurl = "http://www.developer.nokia.com/Community/Wiki/Most_Viewed_Windows_Phone_Articles"; |
try | try | ||
{ | { | ||
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public void DownlLodCompleted(object sender, EventArgs args) | public void DownlLodCompleted(object sender, EventArgs args) | ||
{ | { | ||
| − | MessageBox.Show("Your request is | + | MessageBox.Show("Your request is completed....."); |
} | } | ||
} | } | ||
</code> | </code> | ||
Revision as of 03:14, 11 July 2012
This article include how to make http request using WebClient and listening requst completion using EventHandler.
Article Metadata
Introduction
HTTPManeger.cs
public class HTTPManager
{
private WebClient webdownloader;
private Uri uri;
public event EventHandler WebRequestCompleted;
public HTTPManager(string url)
{
webdownloader = new WebClient();
uri = new Uri(url);
}
public void MakeRequest()
{
webdownloader.DownloadStringCompleted += new DownloadStringCompletedEventHandler(DataDownloaded);
webdownloader.DownloadStringAsync(uri);
}
public void DataDownloaded(object sender, DownloadStringCompletedEventArgs args)
{
EventHandler handler = WebRequestCompleted;
if (handler != null)
{
handler(sender, args);
}
}
}
//now write another class which actully uses above class to make http request and wants to listen request completion
public partial class MainPage : PhoneApplicationPage
{
private string loginurl;
// Constructor
public MainPage()
{
InitializeComponent();
MakeRequest();
}
private void MakeRequest() //you can call this method from any event eg.button click, for simplicity i called it from ctor.
{
string loginurl = "http://www.developer.nokia.com/Community/Wiki/Most_Viewed_Windows_Phone_Articles";
try
{
if (!System.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable())
{
MessageBox.Show("N/W connection not available");
}
else
{
HTTPManager httpmanager = new HTTPManager(loginurl);
httpmanager.WebRequestCompleted += this.DownlLodCompleted;
httpmanager.MakeRequest();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
public void DownlLodCompleted(object sender, EventArgs args)
{
MessageBox.Show("Your request is completed.....");
}
}
