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December 11, 2015 20:28
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Service Bus Notification Hubs with Windows 8 and Templates. Toasts and Live Tile. Either or both. With peek and pictures. One input message.
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| async Task InitNotificationsAsync() | |
| { | |
| await notificationHub.RefreshRegistrationsAsync(); | |
| if (!await notificationHub.RegistrationExistsForApplicationAsync("myUrgentToast")) | |
| { | |
| await notificationHub.CreateTemplateRegistrationForApplicationAsync( | |
| CreateToastTemplate(), "myUrgentToast", new string[]{"urgent", "alert"}); | |
| } | |
| if (!await notificationHub.RegistrationExistsForApplicationAsync("myAppTile")) | |
| { | |
| await notificationHub.CreateTemplateRegistrationForApplicationAsync( | |
| CreateTileTemplate(), "myAppTile", new string[] { "urgent", "all" }); | |
| } | |
| } | |
| XmlDocument CreateToastTemplate() | |
| { | |
| var t = ToastNotificationManager.GetTemplateContent(ToastTemplateType.ToastText02); | |
| ApplyExpressionToXmlNode(t, "//text[@id='1']", "$(headline)"); | |
| ApplyExpressionToXmlNode(t, "//text[@id='2']", "$(message)"); | |
| return t; | |
| } | |
| XmlDocument CreateTileTemplate() | |
| { | |
| var t = TileUpdateManager.GetTemplateContent(TileTemplateType.TileWidePeekImage05); | |
| ApplyExpressionToXmlNode(t, "//image[@id='1']/@src", "$(bigimg)"); // <- wide tile image URL (resource or hosted) | |
| ApplyExpressionToXmlNode(t, "//image[@id='2']/@src", "$(smlimg)"); // <- small image URL (resource or hosted) | |
| ApplyExpressionToXmlNode(t, "//text[@id='1']", "$(headline)"); | |
| ApplyExpressionToXmlNode(t, "//text[@id='2']", "$(message)"); | |
| return t; | |
| } | |
| static bool ApplyExpressionToXmlNode(XmlDocument xdoc, string nodePath, string expression) | |
| { | |
| bool anyHits = false; | |
| foreach (var n in xdoc.SelectNodes(nodePath)) | |
| { | |
| n.InnerText = expression; | |
| anyHits = true; | |
| } | |
| return anyHits; | |
| } |
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Registers a registration for a tile and one for a toast. Toast gets all messages tagged with 'urgent' or 'alert', Tile gets all messages tagged with 'urgent' or 'all'. Tile is a peek tile with a small and a big image URL. Both images live either locally in the app as a resource or can be externally hosted (e.g. also on CDN) or even dynamically generated. Both notifications deliver a headline and a message content line.
Input message key/value schema:
Available tags: all, urgent, alert