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using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml.Linq;
using System.Xml.XPath;
using DotNetOpenAuth.ApplicationBlock;
using DotNetOpenAuth.OAuth;
public partial class Twitter : System.Web.UI.Page {
private string AccessToken {
get { return (string)Session["TwitterAccessToken"]; }
set { Session["TwitterAccessToken"] = value; }
}
private InMemoryTokenManager TokenManager {
get {
var tokenManager = (InMemoryTokenManager)Application["TwitterTokenManager"];
if (tokenManager == null) {
string consumerKey = ConfigurationManager.AppSettings["twitterConsumerKey"];
string consumerSecret = ConfigurationManager.AppSettings["twitterConsumerSecret"];
if (!string.IsNullOrEmpty(consumerKey)) {
tokenManager = new InMemoryTokenManager(consumerKey, consumerSecret);
Application["TwitterTokenManager"] = tokenManager;
}
}
return tokenManager;
}
}
protected void Page_Load(object sender, EventArgs e) {
if (this.TokenManager != null) {
MultiView1.ActiveViewIndex = 1;
if (!IsPostBack) {
var twitter = new WebConsumer(TwitterConsumer.ServiceDescription, this.TokenManager);
// Is Twitter calling back with authorization?
var accessTokenResponse = twitter.ProcessUserAuthorization();
if (accessTokenResponse != null) {
this.AccessToken = accessTokenResponse.AccessToken;
} else if (this.AccessToken == null) {
// If we don't yet have access, immediately request it.
twitter.Channel.Send(twitter.PrepareRequestUserAuthorization());
}
}
}
}
protected void downloadUpdates_Click(object sender, EventArgs e) {
var twitter = new WebConsumer(TwitterConsumer.ServiceDescription, this.TokenManager);
XPathDocument updates = new XPathDocument(TwitterConsumer.GetUpdates(twitter, this.AccessToken).CreateReader());
XPathNavigator nav = updates.CreateNavigator();
var parsedUpdates = from status in nav.Select("/statuses/status").OfType<XPathNavigator>()
where !status.SelectSingleNode("user/protected").ValueAsBoolean
select new {
User = status.SelectSingleNode("user/name").InnerXml,
Status = status.SelectSingleNode("text").InnerXml,
};
StringBuilder tableBuilder = new StringBuilder();
tableBuilder.Append("<table><tr><td>Name</td><td>Update</td></tr>");
foreach (var update in parsedUpdates) {
tableBuilder.AppendFormat(
"<tr><td>{0}</td><td>{1}</td></tr>",
HttpUtility.HtmlEncode(update.User),
HttpUtility.HtmlEncode(update.Status));
}
tableBuilder.Append("</table>");
resultsPlaceholder.Controls.Add(new Literal { Text = tableBuilder.ToString() });
}
protected void uploadProfilePhotoButton_Click(object sender, EventArgs e) {
if (profilePhoto.PostedFile.ContentType == null) {
photoUploadedLabel.Visible = true;
photoUploadedLabel.Text = "Select a file first.";
return;
}
var twitter = new WebConsumer(TwitterConsumer.ServiceDescription, this.TokenManager);
XDocument imageResult = TwitterConsumer.UpdateProfileImage(
twitter,
this.AccessToken,
profilePhoto.PostedFile.InputStream,
profilePhoto.PostedFile.ContentType);
photoUploadedLabel.Visible = true;
}
}
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