Essential Studio for Xamarin.Forms
Stacked Line Chart & Graph

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:local="clr-namespace:ChartExample"
             xmlns:chart="clr-namespace:Syncfusion.SfChart.XForms;assembly=Syncfusion.SfChart.XForms"
             x:Class="ChartExample.MainPage">
    
    <ContentPage.BindingContext>
        <local:ViewModel/>
    </ContentPage.BindingContext>	
	
	<chart:SfChart>
			
		<chart:SfChart.PrimaryAxis>

			<chart:CategoryAxis />

		</chart:SfChart.PrimaryAxis>

		<chart:SfChart.SecondaryAxis>

			<chart:NumericalAxis />

		</chart:SfChart.SecondaryAxis>

		<chart:StackingLineSeries ItemsSource="{Binding Data}" XBindingPath="Category" YBindingPath="Expense"/>

	</chart:SfChart>

</ContentPage>

public class Model
{
    public string Category { get; set; }

    public double Expense { get; set; }

    public Model(string xValue, double yValue)
    {
        Category = xValue;
        Expense = yValue;
    }
}

public class ViewModel
{
    public ObservableCollection<Model> Data { get; set; }

    public ViewModel()
    {
        Data = new ObservableCollection<Model>()
        {
           new Model("Food", 88),
           new Model("Transport", 75),
           new Model("Medical", 68),
           new Model("Clothes", 70),
           new Model("Books", 65),
           new Model("Others", 73),
        };
    }
}