<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="LIS.Pages.SampleCollectionList"
             xmlns:view="clr-namespace:LIS.View;assembly:LIS" Title="Test">

    <ContentPage.ToolbarItems>
        <ToolbarItem Name="SearchItem" Icon="logout.png" Priority="0" Clicked="SearchItem_Clicked"></ToolbarItem>
    </ContentPage.ToolbarItems>

    <Grid>
       .....
    </Grid>
</ContentPage>