Accessing name when toggling switch in listview xamarin forms - xamarin

Question

I have the below codes which consist of a list view. The listview contains a label and a custom switch.
<ListView x:Name="myListView" Margin="20" HasUnevenRows="True">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell IsEnabled="False">
<Grid Margin="0,0,0,10">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<StackLayout VerticalOptions="CenterAndExpand">
<Label Text="{Binding .}" />
</StackLayout>
<local:CustomSwitch x:Name="customSwitch"
SwitchOffColor="Gray"
SwitchOnColor="Red"
SwitchThumbColor="White"
HorizontalOptions="CenterAndExpand"
VerticalOptions="CenterAndExpand"
Grid.Column="1"
/>
</Grid>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
What I want to achieve is to get the label text when I toggle the switch. How can In achieve this in Xamarin Forms from my ViewModel ?

Answer 1

The simplest way would be to create a Bindable property in your CustomSwitch like
BindableProperty CommandParameterProperty = BindableProperty.Create("CommandParameter", typeof(object), typeof(object), null);
public object CommandParameter
{
get { return GetValue(CommandParameterProperty ); }
set
{
SetValue(CommandParameterProperty , value);
}
}
Then in your xaml adapt your declaration to
<local:CustomSwitch x:Name="customSwitch"
SwitchOffColor="Gray"
SwitchOnColor="Red"
SwitchThumbColor="White"
HorizontalOptions="CenterAndExpand"
VerticalOptions="CenterAndExpand"
Grid.Column="1"
CommandParameter={Binding .}
/>
Now in your codebehind you can easily access and consume the CommandParameter and cast it to string:
string labelName = (string) ((sender as CustomSwitch).CommandParameter);