Xamarin - Binding to call a function

Question

I'm using a nuget package called Refractored.XamForms.PullToRefresh .

So my MainPage.Xaml Has:

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
         xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
         xmlns:local="clr-namespace:TheOctant"
         xmlns:controls="clr-namespace:Refractored.XamForms.PullToRefresh;assembly=Refractored.XamForms.PullToRefresh"
         x:Class="TheOctant.MainPage">

<StackLayout>
    <ScrollView>
        <controls:PullToRefreshLayout x:Name="ptrl" RefreshCommand="{Binding UponRefresh}" RefreshColor="Blue">
            <local:ZoomWebView x:Name="webview" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand"></local:ZoomWebView>
        </controls:PullToRefreshLayout>
    </ScrollView>
</StackLayout>
</ContentPage>

So look at RefreshCommand="{Binding UponRefresh}" , I'm trying to bind it to ac# function in MainPage.Xaml.cs

So Here's my failed attempt in MainPage.Xaml.cs :

namespace TheOctant
{
public partial class MainPage : ContentPage
{

    public MainPage()
    {
        InitializeComponent();
    }

    public void UponRefresh()
    {
        webview.Source = "http://www.google.com";
    }
}
}

But it doesn't work. Am I doing this correctly?

Answer 1

No. As the name implies, RefreshCommand needs to be a Command

public ICommand UponRefresh
{
    get {
        return new Command(async () =>
        {
            webview.Source = "http://www.google.com";
        });
    }
}