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namespace OAuthConsumer {
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Net;
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.Messaging;
using DotNetOpenAuth.OAuth;
public partial class Twitter : System.Web.UI.Page {
private AccessToken AccessToken {
get { return (AccessToken)(Session["TwitterAccessToken"] ?? new AccessToken()); }
set { Session["TwitterAccessToken"] = value; }
}
protected void Page_Load(object sender, EventArgs e) {
this.RegisterAsyncTask(
new PageAsyncTask(
async ct => {
var twitter = new TwitterConsumer();
if (twitter.ConsumerKey != null) {
this.MultiView1.ActiveViewIndex = 1;
if (!IsPostBack) {
// Is Twitter calling back with authorization?
var accessTokenResponse = await twitter.ProcessUserAuthorizationAsync(this.Request.Url);
if (accessTokenResponse != null) {
this.AccessToken = accessTokenResponse.AccessToken;
} else {
// If we don't yet have access, immediately request it.
Uri redirectUri = await twitter.RequestUserAuthorizationAsync(MessagingUtilities.GetPublicFacingUrl());
this.Response.Redirect(redirectUri.AbsoluteUri);
}
}
}
}));
}
protected void downloadUpdates_Click(object sender, EventArgs e) {
this.RegisterAsyncTask(
new PageAsyncTask(
async ct => {
var twitter = new TwitterConsumer();
var statusesJson = await twitter.GetUpdatesAsync(this.AccessToken);
StringBuilder tableBuilder = new StringBuilder();
tableBuilder.Append("<table><tr><td>Name</td><td>Update</td></tr>");
foreach (dynamic update in statusesJson) {
if (!update.user.@protected.Value) {
tableBuilder.AppendFormat(
"<tr><td>{0}</td><td>{1}</td></tr>",
HttpUtility.HtmlEncode(update.user.screen_name),
HttpUtility.HtmlEncode(update.text));
}
}
tableBuilder.Append("</table>");
this.resultsPlaceholder.Controls.Add(new Literal { Text = tableBuilder.ToString() });
}));
}
protected void uploadProfilePhotoButton_Click(object sender, EventArgs e) {
this.RegisterAsyncTask(
new PageAsyncTask(
async ct => {
if (this.profilePhoto.PostedFile.ContentType == null) {
this.photoUploadedLabel.Visible = true;
this.photoUploadedLabel.Text = "Select a file first.";
return;
}
var twitter = new TwitterConsumer();
XDocument imageResult =
await
twitter.UpdateProfileImageAsync(
this.AccessToken, this.profilePhoto.PostedFile.InputStream, this.profilePhoto.PostedFile.ContentType);
this.photoUploadedLabel.Visible = true;
}));
}
}
}
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