Hi Krasimir,

I followed your instructions but there is some error in my code kindly check my code and resolve my error. Error in <local:Data> 

Error description: Data does not exist in the namespace "clr-namespace:phonechart"

in Xaml:

<UserControl x:Class="phonechart.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:ig="clr-namespace:Infragistics.Controls.Charts;assembly=InfragisticsWP8.Controls.Charts.XamDataChart.v14.1"
xmlns:local="clr-namespace:phonechart"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400">

<Grid x:Name="LayoutRoot" Background="White">
<Grid.Resources>
<local:Data x:Key="data" />
</Grid.Resources>

<ig:ItemLegend x:Name="Legend"
Grid.Row="1"
VerticalAlignment="Top"
HorizontalAlignment="Right"
Margin="10"
Padding="10,5,10,5"
/>

<ig:XamPieChart Name="pieChart"
Grid.Row="2"
ItemsSource="{StaticResource data}"
LabelMemberPath="Label"
ValueMemberPath="Value"
ToolTip="{}{Label}"
Legend="{Binding ElementName=Legend}"
/>
</Grid>
</UserControl>

in C#:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Navigation;
using Microsoft.Phone.Controls;
using Microsoft.Phone.Shell;
using phonechart.Resources;
using System.Collections.ObjectModel;
using Infragistics.Controls.Charts;
using Infragistics.Collections;
using System.ServiceModel;

namespace phonechart
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
}
}

public class DataItem
{
public string Label { get; set; }
public double Value { get; set; }
}

public class Data : ObservableCollection<DataItem>
{
public Data()
{
Add(new DataItem { Label = "Item 1", Value = 5 });
Add(new DataItem { Label = "Item 2", Value = 6 });
Add(new DataItem { Label = "Item 3", Value = 3 });
Add(new DataItem { Label = "Item 4", Value = 7 });
Add(new DataItem { Label = "Item 5", Value = 5 });
}
}
}