Task - Binding Event Handlers to Events

Зміст курсу

Advanced C# with .NET

Task - Binding Event Handlers to Events

You can download the base project by cloning the Github Repository.

The XAML file has 3 elements:

"mainLabel", representing a Label, and text set to "Hello World".
"sizeSlider", representing a Slider, with Minimum and Maximum values set to 10 and 100 respectively. The default value is 10.
"setSizeBtn", representing a Button.

Your task is to bind the button's Clicked event handler to an event handler method which sets the FontSize property of the label to the value of the slider.

You only have to modify the C# file.

In summary, you will have to write the code for:

A new method called SetSize and it should have the same signature as the EventHandler.
The method should set the FontSize property equal to the Value property of the slider.
Adding the SetSize method to the Clicked event handler of the button element.

The method signature necessary for an event handler method is: void methodName(object sender, EventArgs e);


using Microsoft.Maui.Controls.Shapes;
using System.Globalization;

namespace DataBindingPractice1
{

    public partial class MainPage : ContentPage
    {
        public MainPage()
        {
            InitializeComponent();

            setSizeBtn.Clicked += SetSize;
        }

        private void SetSize(object? sender, EventArgs e)
        {
            mainLabel.FontSize = sizeSlider.Value;
        }
    }
}

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Зміст курсу

Advanced C# with .NET