windows8 AtomPub协议
AtomPub协议示例
这个示例演示了如何获取、创建、更新和删除从网站上使用窗口运行时执行AtomPub标准。这个样品中所提供的c#编程语言,需要一些经验与网络编程。
partial
class MainPage
{
// The default values for the WordPress site
private const string DefaultBaseUri = " http://<Your Wordpress Site>.wordpress.com/ ";
private const string DefaultUser = "";
private const string DefaultPassword = "";
// The default Service Document and Edit 'URIs' for WordPress
private const string DefaultEditUri = " ./wp-app.php/posts ";
private const string DefaultServiceDocUri = " ./wp-app.php/service ";
private const string DefaultFeedUri = " ./?feed=atom ";
private AtomPubClient client;
private SyndicationFeed currentFeed;
private int currentItemIndex;
private Action displayCurrentItem;
private SyndicationItem CurrentItem
{
get
{
if (currentFeed != null && currentItemIndex >= 0
&& currentItemIndex < currentFeed.Items.Count)
{
return currentFeed.Items[currentItemIndex];
}
return null;
}
}
public MainPage()
{
InitializeComponent();
ScenarioList.SelectionChanged += new SelectionChangedEventHandler(ScenarioList_SelectionChanged);
// Starting scenario is the first or based upon a previous selection
ListBoxItem startingScenario = null;
if (SuspensionManager.SessionState.ContainsKey( " SelectedScenario "))
{
String selectedScenarioName = SuspensionManager.SessionState[ " SelectedScenario "] as string;
startingScenario = this.FindName(selectedScenarioName) as ListBoxItem;
}
ScenarioList.SelectedItem = startingScenario != null ? startingScenario : Scenario1;
Scenario1Init();
Scenario2Init();
Scenario3Init();
Scenario4Init();
ServiceAddressField.Text = DefaultBaseUri;
UserNameField.Text = DefaultUser;
PasswordField.Password = DefaultPassword;
ApplicationView.GetForCurrentView().ViewStateChanged
+= new TypedEventHandler<ApplicationView, ApplicationViewStateChangedEventArgs>(MainPage_ViewStateChanged);
}
void DisplayProperties_OrientationChanged( object sender)
{
if (DisplayProperties.CurrentOrientation == DisplayOrientations.Portrait
|| DisplayProperties.CurrentOrientation == DisplayOrientations.PortraitFlipped)
{
VisualStateManager.GoToState( this, " Portrait ", false);
}
}
void MainPage_ViewStateChanged(ApplicationView sender, ApplicationViewStateChangedEventArgs args)
{
switch (args.ViewState)
{
case ApplicationViewState.Filled:
VisualStateManager.GoToState( this, " Filled ", false);
break;
case ApplicationViewState.FullScreenLandscape:
VisualStateManager.GoToState( this, " FullScreenLandscape ", false);
break;
case ApplicationViewState.Snapped:
VisualStateManager.GoToState( this, " Snapped ", false);
break;
case ApplicationViewState.FullScreenPortrait:
VisualStateManager.GoToState( this, " FullScreenPortrait ", false);
break;
default:
break;
}
}
#region Scenario Specific Code
void Scenario1Init()
{
}
private async void Scenario1Start_Click( object sender, RoutedEventArgs e)
{
try
{
UpdateClient();
// Note that this feed is public by default and will not require authentication.
// We will only get back a limited use feed, without information about editing.
Uri resourceUri = new Uri(ServiceAddressField.Text.Trim() + DefaultFeedUri);
Scenario1OutputField.Text += " Fetching resource: " + resourceUri + " \r\n ";
currentFeed = await client.RetrieveFeedAsync(resourceUri);
currentItemIndex = 0;
Scenario1OutputField.Text += " Complete\r\n ";
Scenario1DisplayCurrentItem();
}
catch (Exception ex) // For Debugging
{
Scenario1OutputField.Text += ex + " \r\n ";
}
}
void Scenario1DisplayCurrentItem()
{
if (CurrentItem != null)
{
ISyndicationText title = CurrentItem.Title;
Scenario1TitleField.Text = title != null ? // WebUtility.HtmlDecode // TODO: Not in the current build
(title.Text) : " (no title) ";
ISyndicationText value = CurrentItem.Content ?? CurrentItem.Summary;
Scenario1WebView.NavigateToString(value != null ? value.Text : " (no value) ");
}
}
void Scenario1Reset()
{
currentFeed = null;
Scenario1OutputField.Text = string.Empty;
Scenario1TitleField.Text = string.Empty;
Scenario1WebView.NavigateToString( " <HTML></HTML> ");
}
void Scenario2Init()
{
}
private async void Scenario2Start_Click( object sender, RoutedEventArgs e)
{
try
{
UpdateClient();
Uri serviceUri = new Uri(ServiceAddressField.Text.Trim() + DefaultServiceDocUri);
Scenario2OutputField.Text += " Fetching Service document: " + serviceUri + " \r\n ";
Uri resourceUri = await FindEditUri(serviceUri);
// The result here is usually the same as:
// Uri resourceUri = new Uri(ServiceAddressField.Text.Trim() + DefaultEditUri);
Scenario2OutputField.Text += " Uploading Post: " + resourceUri + " \r\n ";
SyndicationItem item = new SyndicationItem();
item.Title = new SyndicationText(Scenario2TitleField.Text, SyndicationTextType.Text);
item.Content = new SyndicationContent(Scenario2BodyField.Text, SyndicationTextType.Html);
SyndicationItem result = await client.CreateResourceAsync(resourceUri, item.Title.Text, item);
Scenario2OutputField.Text += " Posted at " + result.ItemUri + " \r\n ";
Scenario2OutputField.Text += " Complete\r\n ";
}
catch (Exception ex) // For debugging
{
Scenario2OutputField.Text += ex + " \r\n ";
}
}
// Read the service document to find the URI we're suposed to use when uploading content.
private async Task<Uri> FindEditUri(Uri serviceUri)
{
ServiceDocument serviceDocument = await client.RetrieveServiceDocumentAsync(serviceUri);
foreach (Workspace workspace in serviceDocument.Workspaces)
{
foreach (ResourceCollection collection in workspace.Collections)
{
if ( string.Join( " ; ", collection.Accepts) == " application/atom+xml;type=entry ")
{
return collection.Uri;
}
}
}
throw new ArgumentException( " Edit Uri not found in service document ");
}
void Scenario2Reset()
{
Scenario2OutputField.Text = string.Empty;
}
void Scenario3Init()
{
}
// Download a feed
private async void Scenario3Start_Click( object sender, RoutedEventArgs e)
{
try
{
UpdateClient();
// If we retrieve the feed via the Edit uri then we will be logged in and will be
// able to modify/delete the resource.
Uri resourceUri = new Uri(ServiceAddressField.Text.Trim() + DefaultEditUri);
Scenario3OutputField.Text += " Fetching feed: " + resourceUri + " \r\n ";
currentFeed = await client.RetrieveFeedAsync(resourceUri);
currentItemIndex = 0;
Scenario3OutputField.Text += " Got feed\r\n ";
Scenario3OutputField.Text += " Title: " + currentFeed.Title.Text + " \r\n ";
if (CurrentItem != null)
{
Scenario3DisplayCurrentItem();
Scenario3OutputField.Text += " EditUri: " + CurrentItem.EditUri + " \r\n ";
}
Scenario3OutputField.Text += " Complete\r\n ";
}
catch (Exception ex) // For Debugging
{
Scenario3OutputField.Text += ex + " \r\n ";
}
}
// Delete the current entry
private async void Scenario3Delete_Click( object sender, RoutedEventArgs e)
{
try
{
UpdateClient();
if (CurrentItem == null)
{
Scenario3OutputField.Text += " No item currently displayed, please download a feed first.\r\n ";
return;
}
Scenario3OutputField.Text += " Deleting item: " + CurrentItem.EditUri + " \r\n ";
await client.DeleteResourceItemAsync(CurrentItem);
Scenario3OutputField.Text += " Complete\r\n ";
// Our feed is now out of date. Re-fetch the feed before deleting something else.
currentFeed = null;
Scenario3TitleField.Text = string.Empty;
Scenario3WebView.NavigateToString( " <HTML></HTML> ");
}
catch (Exception ex) // For Debugging
{
Scenario3OutputField.Text += ex + " \r\n ";
}
}
void Scenario3DisplayCurrentItem()
{
if (CurrentItem != null)
{
ISyndicationText title = CurrentItem.Title;
Scenario3TitleField.Text = title != null ? // WebUtility.HtmlDecode // TODO: Not in the current build
(title.Text) : " (no title) ";
ISyndicationText value = CurrentItem.Content ?? CurrentItem.Summary;
Scenario3WebView.NavigateToString(value != null ? value.Text : " (no value) ");
}
}
void Scenario3Reset()
{
currentFeed = null;
Scenario3OutputField.Text = string.Empty;
Scenario3TitleField.Text = string.Empty;
Scenario3WebView.NavigateToString( " <HTML></HTML> ");
}
void Scenario4Init()
{
}
private async void Scenario4Start_Click( object sender, RoutedEventArgs e)
{
try
{
UpdateClient();
// If we retrieve the feed via the Edit uri then we will be logged in and be
// able to modify/delete the resource.
Uri resourceUri = new Uri(ServiceAddressField.Text.Trim() + DefaultEditUri);
Scenario4OutputField.Text += " Fetching feed: " + resourceUri + " \r\n ";
currentFeed = await client.RetrieveFeedAsync(resourceUri);
currentItemIndex = 0;
Scenario4OutputField.Text += " Got feed\r\n ";
Scenario4OutputField.Text += " Title: " + currentFeed.Title.Text + " \r\n ";
if (CurrentItem != null)
{
Scenario4DisplayCurrentItem();
Scenario4OutputField.Text += " EditUri: " + CurrentItem.EditUri + " \r\n ";
}
Scenario4OutputField.Text += " Complete\r\n ";
}
catch (Exception ex) // For Debugging
{
Scenario4OutputField.Text += ex + " \r\n ";
}
}
// Update the current entry
private async void Scenario4Save_Click( object sender, RoutedEventArgs e)
{
try
{
UpdateClient();
if (CurrentItem == null)
{
Scenario4OutputField.Text += " No item currently displayed, please download a feed first.\r\n ";
return;
}
Scenario4OutputField.Text += " Updating item: " + CurrentItem.EditUri + " \r\n ";
// Update the item
SyndicationItem updatedItem = new SyndicationItem();
updatedItem.Title = new SyndicationText(Scenario4TitleField.Text, SyndicationTextType.Text);
updatedItem.Content = new SyndicationContent(Scenario4BodyField.Text, SyndicationTextType.Html);
await client.UpdateResourceAsync(CurrentItem.EditUri, updatedItem);
Scenario4OutputField.Text += " Complete\r\n ";
}
catch (Exception ex) // For Debugging
{
Scenario4OutputField.Text += ex + " \r\n ";
}
}
void Scenario4DisplayCurrentItem()
{
if (CurrentItem != null)
{
ISyndicationText title = CurrentItem.Title;
Scenario4TitleField.Text = title != null ? // WebUtility.HtmlDecode // TODO: Not in the current build
(title.Text) : " (no title) ";
ISyndicationText value = CurrentItem.Content ?? CurrentItem.Summary;
Scenario4BodyField.Text = value != null ? value.Text : " (no value) ";
}
}
void Scenario4Reset()
{
currentFeed = null;
Scenario4OutputField.Text = string.Empty;
Scenario4TitleField.Text = string.Empty;
Scenario4BodyField.Text = string.Empty;
}
#endregion
private void UpdateClient()
{
client = new AtomPubClient();
client.BypassCacheOnRetrieve = true;
// Assume the credentials have changed
client.ServerCredential = new PasswordCredential()
{
UserName = UserNameField.Text,
Password = PasswordField.Password
};
}
private void PreviousItemButton_Click( object sender, RoutedEventArgs e)
{
if (currentFeed != null && currentItemIndex > 0)
{
currentItemIndex--;
displayCurrentItem();
}
}
private void NextItemButton_Click( object sender, RoutedEventArgs e)
{
if (currentFeed != null && currentItemIndex < currentFeed.Items.Count - 1)
{
currentItemIndex++;
displayCurrentItem();
}
}
void ScenarioList_SelectionChanged( object sender, SelectionChangedEventArgs e)
{
ResetAll();
if (ScenarioList.SelectedItem == Scenario1)
{
Scenario1Input.Visibility = Visibility.Visible;
Scenario1Output.Visibility = Visibility.Visible;
displayCurrentItem = Scenario1DisplayCurrentItem;
}
else if (ScenarioList.SelectedItem == Scenario2)
{
Scenario2Input.Visibility = Visibility.Visible;
Scenario2Output.Visibility = Visibility.Visible;
displayCurrentItem = null;
}
else if (ScenarioList.SelectedItem == Scenario3)
{
Scenario3Input.Visibility = Visibility.Visible;
Scenario3Output.Visibility = Visibility.Visible;
displayCurrentItem = Scenario3DisplayCurrentItem;
}
else if (ScenarioList.SelectedItem == Scenario4)
{
Scenario4Input.Visibility = Visibility.Visible;
Scenario4Output.Visibility = Visibility.Visible;
displayCurrentItem = Scenario4DisplayCurrentItem;
}
if (ScenarioList.SelectedItem != null)
{
ListBoxItem selectedListBoxItem = ScenarioList.SelectedItem as ListBoxItem;
SuspensionManager.SessionState[ " SelectedScenario "] = selectedListBoxItem.Name;
}
}
public void ResetAll()
{
displayCurrentItem = null;
Scenario1Input.Visibility = Visibility.Collapsed;
Scenario1Output.Visibility = Visibility.Collapsed;
Scenario1Reset();
Scenario2Input.Visibility = Visibility.Collapsed;
Scenario2Output.Visibility = Visibility.Collapsed;
Scenario2Reset();
Scenario3Input.Visibility = Visibility.Collapsed;
Scenario3Output.Visibility = Visibility.Collapsed;
Scenario3Reset();
Scenario4Input.Visibility = Visibility.Collapsed;
Scenario4Output.Visibility = Visibility.Collapsed;
Scenario4Reset();
}
async void Footer_Click( object sender, RoutedEventArgs e)
{
await Windows.System.Launcher.LaunchUriAsync( new Uri(((HyperlinkButton)sender).Tag.ToString()));
}
{
// The default values for the WordPress site
private const string DefaultBaseUri = " http://<Your Wordpress Site>.wordpress.com/ ";
private const string DefaultUser = "";
private const string DefaultPassword = "";
// The default Service Document and Edit 'URIs' for WordPress
private const string DefaultEditUri = " ./wp-app.php/posts ";
private const string DefaultServiceDocUri = " ./wp-app.php/service ";
private const string DefaultFeedUri = " ./?feed=atom ";
private AtomPubClient client;
private SyndicationFeed currentFeed;
private int currentItemIndex;
private Action displayCurrentItem;
private SyndicationItem CurrentItem
{
get
{
if (currentFeed != null && currentItemIndex >= 0
&& currentItemIndex < currentFeed.Items.Count)
{
return currentFeed.Items[currentItemIndex];
}
return null;
}
}
public MainPage()
{
InitializeComponent();
ScenarioList.SelectionChanged += new SelectionChangedEventHandler(ScenarioList_SelectionChanged);
// Starting scenario is the first or based upon a previous selection
ListBoxItem startingScenario = null;
if (SuspensionManager.SessionState.ContainsKey( " SelectedScenario "))
{
String selectedScenarioName = SuspensionManager.SessionState[ " SelectedScenario "] as string;
startingScenario = this.FindName(selectedScenarioName) as ListBoxItem;
}
ScenarioList.SelectedItem = startingScenario != null ? startingScenario : Scenario1;
Scenario1Init();
Scenario2Init();
Scenario3Init();
Scenario4Init();
ServiceAddressField.Text = DefaultBaseUri;
UserNameField.Text = DefaultUser;
PasswordField.Password = DefaultPassword;
ApplicationView.GetForCurrentView().ViewStateChanged
+= new TypedEventHandler<ApplicationView, ApplicationViewStateChangedEventArgs>(MainPage_ViewStateChanged);
}
void DisplayProperties_OrientationChanged( object sender)
{
if (DisplayProperties.CurrentOrientation == DisplayOrientations.Portrait
|| DisplayProperties.CurrentOrientation == DisplayOrientations.PortraitFlipped)
{
VisualStateManager.GoToState( this, " Portrait ", false);
}
}
void MainPage_ViewStateChanged(ApplicationView sender, ApplicationViewStateChangedEventArgs args)
{
switch (args.ViewState)
{
case ApplicationViewState.Filled:
VisualStateManager.GoToState( this, " Filled ", false);
break;
case ApplicationViewState.FullScreenLandscape:
VisualStateManager.GoToState( this, " FullScreenLandscape ", false);
break;
case ApplicationViewState.Snapped:
VisualStateManager.GoToState( this, " Snapped ", false);
break;
case ApplicationViewState.FullScreenPortrait:
VisualStateManager.GoToState( this, " FullScreenPortrait ", false);
break;
default:
break;
}
}
#region Scenario Specific Code
void Scenario1Init()
{
}
private async void Scenario1Start_Click( object sender, RoutedEventArgs e)
{
try
{
UpdateClient();
// Note that this feed is public by default and will not require authentication.
// We will only get back a limited use feed, without information about editing.
Uri resourceUri = new Uri(ServiceAddressField.Text.Trim() + DefaultFeedUri);
Scenario1OutputField.Text += " Fetching resource: " + resourceUri + " \r\n ";
currentFeed = await client.RetrieveFeedAsync(resourceUri);
currentItemIndex = 0;
Scenario1OutputField.Text += " Complete\r\n ";
Scenario1DisplayCurrentItem();
}
catch (Exception ex) // For Debugging
{
Scenario1OutputField.Text += ex + " \r\n ";
}
}
void Scenario1DisplayCurrentItem()
{
if (CurrentItem != null)
{
ISyndicationText title = CurrentItem.Title;
Scenario1TitleField.Text = title != null ? // WebUtility.HtmlDecode // TODO: Not in the current build
(title.Text) : " (no title) ";
ISyndicationText value = CurrentItem.Content ?? CurrentItem.Summary;
Scenario1WebView.NavigateToString(value != null ? value.Text : " (no value) ");
}
}
void Scenario1Reset()
{
currentFeed = null;
Scenario1OutputField.Text = string.Empty;
Scenario1TitleField.Text = string.Empty;
Scenario1WebView.NavigateToString( " <HTML></HTML> ");
}
void Scenario2Init()
{
}
private async void Scenario2Start_Click( object sender, RoutedEventArgs e)
{
try
{
UpdateClient();
Uri serviceUri = new Uri(ServiceAddressField.Text.Trim() + DefaultServiceDocUri);
Scenario2OutputField.Text += " Fetching Service document: " + serviceUri + " \r\n ";
Uri resourceUri = await FindEditUri(serviceUri);
// The result here is usually the same as:
// Uri resourceUri = new Uri(ServiceAddressField.Text.Trim() + DefaultEditUri);
Scenario2OutputField.Text += " Uploading Post: " + resourceUri + " \r\n ";
SyndicationItem item = new SyndicationItem();
item.Title = new SyndicationText(Scenario2TitleField.Text, SyndicationTextType.Text);
item.Content = new SyndicationContent(Scenario2BodyField.Text, SyndicationTextType.Html);
SyndicationItem result = await client.CreateResourceAsync(resourceUri, item.Title.Text, item);
Scenario2OutputField.Text += " Posted at " + result.ItemUri + " \r\n ";
Scenario2OutputField.Text += " Complete\r\n ";
}
catch (Exception ex) // For debugging
{
Scenario2OutputField.Text += ex + " \r\n ";
}
}
// Read the service document to find the URI we're suposed to use when uploading content.
private async Task<Uri> FindEditUri(Uri serviceUri)
{
ServiceDocument serviceDocument = await client.RetrieveServiceDocumentAsync(serviceUri);
foreach (Workspace workspace in serviceDocument.Workspaces)
{
foreach (ResourceCollection collection in workspace.Collections)
{
if ( string.Join( " ; ", collection.Accepts) == " application/atom+xml;type=entry ")
{
return collection.Uri;
}
}
}
throw new ArgumentException( " Edit Uri not found in service document ");
}
void Scenario2Reset()
{
Scenario2OutputField.Text = string.Empty;
}
void Scenario3Init()
{
}
// Download a feed
private async void Scenario3Start_Click( object sender, RoutedEventArgs e)
{
try
{
UpdateClient();
// If we retrieve the feed via the Edit uri then we will be logged in and will be
// able to modify/delete the resource.
Uri resourceUri = new Uri(ServiceAddressField.Text.Trim() + DefaultEditUri);
Scenario3OutputField.Text += " Fetching feed: " + resourceUri + " \r\n ";
currentFeed = await client.RetrieveFeedAsync(resourceUri);
currentItemIndex = 0;
Scenario3OutputField.Text += " Got feed\r\n ";
Scenario3OutputField.Text += " Title: " + currentFeed.Title.Text + " \r\n ";
if (CurrentItem != null)
{
Scenario3DisplayCurrentItem();
Scenario3OutputField.Text += " EditUri: " + CurrentItem.EditUri + " \r\n ";
}
Scenario3OutputField.Text += " Complete\r\n ";
}
catch (Exception ex) // For Debugging
{
Scenario3OutputField.Text += ex + " \r\n ";
}
}
// Delete the current entry
private async void Scenario3Delete_Click( object sender, RoutedEventArgs e)
{
try
{
UpdateClient();
if (CurrentItem == null)
{
Scenario3OutputField.Text += " No item currently displayed, please download a feed first.\r\n ";
return;
}
Scenario3OutputField.Text += " Deleting item: " + CurrentItem.EditUri + " \r\n ";
await client.DeleteResourceItemAsync(CurrentItem);
Scenario3OutputField.Text += " Complete\r\n ";
// Our feed is now out of date. Re-fetch the feed before deleting something else.
currentFeed = null;
Scenario3TitleField.Text = string.Empty;
Scenario3WebView.NavigateToString( " <HTML></HTML> ");
}
catch (Exception ex) // For Debugging
{
Scenario3OutputField.Text += ex + " \r\n ";
}
}
void Scenario3DisplayCurrentItem()
{
if (CurrentItem != null)
{
ISyndicationText title = CurrentItem.Title;
Scenario3TitleField.Text = title != null ? // WebUtility.HtmlDecode // TODO: Not in the current build
(title.Text) : " (no title) ";
ISyndicationText value = CurrentItem.Content ?? CurrentItem.Summary;
Scenario3WebView.NavigateToString(value != null ? value.Text : " (no value) ");
}
}
void Scenario3Reset()
{
currentFeed = null;
Scenario3OutputField.Text = string.Empty;
Scenario3TitleField.Text = string.Empty;
Scenario3WebView.NavigateToString( " <HTML></HTML> ");
}
void Scenario4Init()
{
}
private async void Scenario4Start_Click( object sender, RoutedEventArgs e)
{
try
{
UpdateClient();
// If we retrieve the feed via the Edit uri then we will be logged in and be
// able to modify/delete the resource.
Uri resourceUri = new Uri(ServiceAddressField.Text.Trim() + DefaultEditUri);
Scenario4OutputField.Text += " Fetching feed: " + resourceUri + " \r\n ";
currentFeed = await client.RetrieveFeedAsync(resourceUri);
currentItemIndex = 0;
Scenario4OutputField.Text += " Got feed\r\n ";
Scenario4OutputField.Text += " Title: " + currentFeed.Title.Text + " \r\n ";
if (CurrentItem != null)
{
Scenario4DisplayCurrentItem();
Scenario4OutputField.Text += " EditUri: " + CurrentItem.EditUri + " \r\n ";
}
Scenario4OutputField.Text += " Complete\r\n ";
}
catch (Exception ex) // For Debugging
{
Scenario4OutputField.Text += ex + " \r\n ";
}
}
// Update the current entry
private async void Scenario4Save_Click( object sender, RoutedEventArgs e)
{
try
{
UpdateClient();
if (CurrentItem == null)
{
Scenario4OutputField.Text += " No item currently displayed, please download a feed first.\r\n ";
return;
}
Scenario4OutputField.Text += " Updating item: " + CurrentItem.EditUri + " \r\n ";
// Update the item
SyndicationItem updatedItem = new SyndicationItem();
updatedItem.Title = new SyndicationText(Scenario4TitleField.Text, SyndicationTextType.Text);
updatedItem.Content = new SyndicationContent(Scenario4BodyField.Text, SyndicationTextType.Html);
await client.UpdateResourceAsync(CurrentItem.EditUri, updatedItem);
Scenario4OutputField.Text += " Complete\r\n ";
}
catch (Exception ex) // For Debugging
{
Scenario4OutputField.Text += ex + " \r\n ";
}
}
void Scenario4DisplayCurrentItem()
{
if (CurrentItem != null)
{
ISyndicationText title = CurrentItem.Title;
Scenario4TitleField.Text = title != null ? // WebUtility.HtmlDecode // TODO: Not in the current build
(title.Text) : " (no title) ";
ISyndicationText value = CurrentItem.Content ?? CurrentItem.Summary;
Scenario4BodyField.Text = value != null ? value.Text : " (no value) ";
}
}
void Scenario4Reset()
{
currentFeed = null;
Scenario4OutputField.Text = string.Empty;
Scenario4TitleField.Text = string.Empty;
Scenario4BodyField.Text = string.Empty;
}
#endregion
private void UpdateClient()
{
client = new AtomPubClient();
client.BypassCacheOnRetrieve = true;
// Assume the credentials have changed
client.ServerCredential = new PasswordCredential()
{
UserName = UserNameField.Text,
Password = PasswordField.Password
};
}
private void PreviousItemButton_Click( object sender, RoutedEventArgs e)
{
if (currentFeed != null && currentItemIndex > 0)
{
currentItemIndex--;
displayCurrentItem();
}
}
private void NextItemButton_Click( object sender, RoutedEventArgs e)
{
if (currentFeed != null && currentItemIndex < currentFeed.Items.Count - 1)
{
currentItemIndex++;
displayCurrentItem();
}
}
void ScenarioList_SelectionChanged( object sender, SelectionChangedEventArgs e)
{
ResetAll();
if (ScenarioList.SelectedItem == Scenario1)
{
Scenario1Input.Visibility = Visibility.Visible;
Scenario1Output.Visibility = Visibility.Visible;
displayCurrentItem = Scenario1DisplayCurrentItem;
}
else if (ScenarioList.SelectedItem == Scenario2)
{
Scenario2Input.Visibility = Visibility.Visible;
Scenario2Output.Visibility = Visibility.Visible;
displayCurrentItem = null;
}
else if (ScenarioList.SelectedItem == Scenario3)
{
Scenario3Input.Visibility = Visibility.Visible;
Scenario3Output.Visibility = Visibility.Visible;
displayCurrentItem = Scenario3DisplayCurrentItem;
}
else if (ScenarioList.SelectedItem == Scenario4)
{
Scenario4Input.Visibility = Visibility.Visible;
Scenario4Output.Visibility = Visibility.Visible;
displayCurrentItem = Scenario4DisplayCurrentItem;
}
if (ScenarioList.SelectedItem != null)
{
ListBoxItem selectedListBoxItem = ScenarioList.SelectedItem as ListBoxItem;
SuspensionManager.SessionState[ " SelectedScenario "] = selectedListBoxItem.Name;
}
}
public void ResetAll()
{
displayCurrentItem = null;
Scenario1Input.Visibility = Visibility.Collapsed;
Scenario1Output.Visibility = Visibility.Collapsed;
Scenario1Reset();
Scenario2Input.Visibility = Visibility.Collapsed;
Scenario2Output.Visibility = Visibility.Collapsed;
Scenario2Reset();
Scenario3Input.Visibility = Visibility.Collapsed;
Scenario3Output.Visibility = Visibility.Collapsed;
Scenario3Reset();
Scenario4Input.Visibility = Visibility.Collapsed;
Scenario4Output.Visibility = Visibility.Collapsed;
Scenario4Reset();
}
async void Footer_Click( object sender, RoutedEventArgs e)
{
await Windows.System.Launcher.LaunchUriAsync( new Uri(((HyperlinkButton)sender).Tag.ToString()));
}
完整示例