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Editor to share with you how to build ControlTemplate control template in Xamarin XAML language to achieve theme switching function, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's learn about it!

(3) Open the MainPage.xaml.cs file and write the code to realize the theme switching function. The code is as follows:

Using System

Using System.Collections.Generic

Using System.Linq

Using System.Text

Using System.Threading.Tasks

Using Xamarin.Forms

Namespace ControlTemplateDemo

{

Public partial class MainPage: ContentPage

{

Bool originalTemplate = true

ControlTemplate tealTemplate

ControlTemplate aquaTemplate

Public MainPage ()

{

InitializeComponent ()

/ / instantiate the control template

TealTemplate = (ControlTemplate) Application.Current.Resources ["TealTemplate"]

AquaTemplate = (ControlTemplate) Application.Current.Resources ["AquaTemplate"]

}

/ / switch between templates

Void OnButtonClicked (object sender, EventArgs e)

{

OriginalTemplate =! originalTemplate

ContentView.ControlTemplate = (originalTemplate)? TealTemplate: aquaTemplate

}

}

}

When you run the program at this point, you will see the effect shown in figure 14.12-14.14. When the developer taps the "change theme" button, you will see the effect shown in figure 14.15-14.17.

These are all the contents of the article "how to build ControlTemplate control templates in Xamarin XAML language to achieve theme switching". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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