how to implement checkbox in xamarin forms

hi ,

I am implementing checkboxes using xlabs.controls.That checkboxes are inside the listview,but i cannot access the checkbox values in viewmodel or codebehind also.please help me.

xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"

xmlns:vm="clr-namespace:LS_Service.ViewModel"

xmlns:controls="clr-namespace:XLabs.Forms.Controls;assembly=XLabs.Forms"

xmlns:helper="clr-namespace:LS_Service.Helper"

x:Class="LS_Service.Views.LS_Leaftypes" NavigationPage.HasNavigationBar="False">

USE THIS PLUGIN IN THE SOLUTION (Xamarin.Forms.InputKit)

ADD THIS REFERENCE ON XAMAL PAGE

xmlns:input="clr-namespace:Plugin.InputKit.Shared.Controls;assembly=Plugin.InputKit"

ON CS PAGE

protected void chk_changed(object sender, EventArgs e)

{

string status = ((Plugin.InputKit.Shared.Controls.CheckBox)sender).Text;

if (string.IsNullOrEmpty(_feewaiverviewmodel.Feewaiver.reasons))

{

_feewaiverviewmodel.Feewaiver.reasons = status ;

}else

{

_feewaiverviewmodel.Feewaiver.reasons = _feewaiverviewmodel.Feewaiver.reasons+","+ status ;

}