CODEWITHSUNDEEP
xamluwpuwp-xaml
user7312586
user7312586

Reputation:

UWP xaml logic:

can someone explain to me what this code in a App.xaml does, especially the logic:AppDataModel part. AppDataModel is Class in the Project.

<Application.Resources>

        <logic:AppDataModel
            x:Key="TheViewModel" />

        <x:String
            x:Key="AppName">Master app</x:String>

</Application.Resources>

Upvotes: 1

Views: 47

Answers (2)

Emond
Emond

Reputation: 50672

These xaml lines add items to the Resources dictionary of the current application:

Application.Current.Resources["TheViewModel"] = new logic.AppDataModel();
Application.Current.Resources["AppName"] = "Master app";

Upvotes: 0

Will Custode
Will Custode

Reputation: 4594

This markup, when parsed, creates two entries in the Application.Resources dictionary. They key "TheViewModel" is tied to a new instance of AppDataModel and the key "AppName" is tied to a string initialized to "Mater app".

To go beyond your question, the reason you do this in XAML is to co-locate (keep together) your UI code and some instance data, loosely speaking. The biggest example is wanting your UI to always have a particular view model that it binds to. This can be achieved, as I assume from the markup you posted, like you're doing. Creating a view model object in the resources for a given control, window, or app and then assigning it using {StaticResource TheViewModel} will keep you from having to muddy up your code-behind or your view model with binding code.

Hope this helps!

Upvotes: 1

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