{"id":6342,"date":"2022-09-02T20:35:04","date_gmt":"2022-09-02T15:05:04","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-async-wait-issues-with-view-updation-in-uwp\/"},"modified":"2022-09-02T20:35:04","modified_gmt":"2022-09-02T15:05:04","slug":"solved-async-wait-issues-with-view-updation-in-uwp","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-async-wait-issues-with-view-updation-in-uwp\/","title":{"rendered":"[Solved] Async Wait issues with view updation in UWP"},"content":{"rendered":"

[ad_1]
\n<\/p>\n

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Since calling Bindings.Update()<\/code> fixed your issue, your binding expressions should be correct, but somehow the property change notification fails.<\/p>\n

I am not going to guess what really went wrong here but to explain when you should be using Bindings.Update()<\/code>, and when you should be using INPC<\/code> + OneWay<\/code> bindings.<\/p>\n

Bindings.Update()<\/code> is only available for x:Bind<\/code>, unlike traditional binding, if your UI rarely needs to update with new data, you don’t have to implement INPC<\/code> with your properties, in fact, it’s actually much cheaper and more performant doing OneTime<\/code> bindings (with calling Bindings.Update()<\/code>) than implementing INPC<\/code> with OneWay<\/code> bindings.<\/p>\n

So, the following will work with x:Bind<\/code> –<\/p>\n

<TextBlock Text=\"{x:Bind MyText}\" Style=\"{StaticResource SubheaderTextBlockStyle}\" \/>\n<\/code><\/pre>\n
\n
public string MyText { get; set; }\n\nprivate void Button_Click(object sender, RoutedEventArgs e)\n{\n    MyText = \"new text!!\";\n    Bindings.Update();\n}\n<\/code><\/pre>\n
Once the Button is clicked, the TextBlock<\/code> will be populated with new text!!<\/strong>. Note here I use the default OneTime<\/code> binding (i.e. {x:Bind MyText}<\/code>) and MyText<\/code> is just a a normal CLR property.<\/p>\n
This only works because I called Bindings.Update()<\/code> in the end, which forces OneTime<\/code> bindings to be re-initialized.<\/p>\n
However<\/strong>, like I said earlier, please only consider using the above approach when your UI rarely<\/em> needs to update. Most of the time this is not the case, so you will still implement INPC<\/code> and write OneWay<\/code> binding, without the need of using Bindings.Update()<\/code> at all.<\/p>\n<\/p><\/div>\n
<\/div>\n<\/div>\n
            <\/span> <\/p><\/div>\n<\/div>\n
[ad_2]<\/p>\n
solved Async Wait issues with view updation in UWP <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] Since calling Bindings.Update() fixed your issue, your binding expressions should be correct, but somehow the property change notification fails. I am not going to guess what really went wrong here but to explain when you should be using Bindings.Update(), and when you should be using INPC + OneWay bindings. Bindings.Update() is only available for … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[1144,324,1741],"class_list":["post-6342","post","type-post","status-publish","format-standard","hentry","category-solved","tag-async-await","tag-c","tag-uwp"],"yoast_head":"\n[Solved] Async Wait issues with view updation in UWP - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-async-wait-issues-with-view-updation-in-uwp\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Async Wait issues with view updation in UWP - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Since calling Bindings.Update() fixed your issue, your binding expressions should be correct, but somehow the property change notification fails. I am not going to guess what really went wrong here but to explain when you should be using Bindings.Update(), and when you should be using INPC + OneWay bindings. Bindings.Update() is only available for ... 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