Reputation: 53
I need to to perform callback response in parent xaml to child xaml, and do some stuff there
Child xaml:
<?xml version="1.0" encoding="UTF-8"?>
<ContentView xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="project.NavigationBar">
<ContentView.Content>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<StackLayout
Orientation="Horizontal"
Grid.Column="0"
HorizontalOptions="CenterAndExpand"
VerticalOptions="End">
<Button
x:Name="NavigationBarButton"
Clicked="NavigationBarButton_Clicked"
Text="Gallery">
</Button>
</StackLayout>
</Grid>
</ContentView.Content>
</ContentView>
Child xaml.cs:
private void NavigationBarButton_Clicked(object sender, EventArgs e)
{
navigationBarButton_Clicked?.Invoke(sender, e);
}
public void logicFunc(params)
{
do stuff there
}
Parent xaml:
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="project.main"
xmlns:views="project.NavigationBar"
>
<views:NavigationBar
navigationBarButton_Clicked="NavigationBarButton_Clicked">
</views:NavigationBar>
</ContentPage>
Parent xaml.cs:
private void NavigationBarButton_Clicked(object sender, EventArgs e)
{
NavigationBar navbar = new NavigationBar();
navbar.logicFunc(params);
}
How could i invoke response form parent to child xaml?
Upvotes: 0
Views: 1435
Reputation: 2299
Set a defined name for your child element in the parent's xaml:
<views:NavigationBar x:Name="NavBar"
navigationBarButton_Clicked="NavigationBarButton_Clicked">
</views:NavigationBar>
then in the method being invoked by the event handler (in the parent view), you can access the element via it's name and call the public method:
private void NavigationBarButton_Clicked(object sender, EventArgs e)
{
NavBar.logicFunc(params);
}
Upvotes: 1