using System.Collections.Generic;

using System.ServiceModel;

namespace SilverlightApplication1.Web

    [ServiceContract]

    public interface ICubeConnector

    {

        [OperationContract]

        IEnumerable<Dictionary<string, object>> GetData(string query);

    }

}

using System;

using System.Data;

using System.Linq;

using Microsoft.AnalysisServices.AdomdClient;

namespace SilverlightApplication1.Web

{

    public class CubeConnector : ICubeConnector

    {

        public IEnumerable<Dictionary<string, object>> GetData(string query)

        {

            var table = GetDataTable(query);

            var columns = table.Columns.Cast<DataColumn>();

            return table.AsEnumerable().Select(r => columns.Select(c => new { Column = c.ColumnName, Value = r[c.ColumnName] })

                             .ToDictionary(i => i.Column, i => i.Value != DBNull.Value ? i.Value : null));

        }

        private DataTable GetDataTable(string query)

        {

            AdomdConnection conn = new AdomdConnection("Data Source=localhost; Catalog=MyCube");

            try

            {

                adapter.Fill(table);

            }

            finally

            {

                conn.Close();

            }

            return table;

        }

    }

}

<UserControl.Resources>

    <Style x:Name="CustomDataPoint" TargetType="toolkit:ColumnDataPoint">

        <Setter Property="DependentValueStringFormat" Value="{}{0:C}"/>

    </Style>

    <Style x:Name="CustomAxisLabel" TargetType="toolkit:AxisLabel">

        <Setter Property="StringFormat" Value="{}{0:C}"/>

    </Style>

</UserControl.Resources>

<toolkit:Chart Name="MyChart" Title="Amount by Account Types" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Height="479" Width="714" >

    <toolkit:ColumnSeries Title="Amount" DependentValueBinding="{Binding SeriesValue}" IndependentValueBinding="{Binding SeriesName}" AnimationSequence="FirstToLast" IsSelectionEnabled="True" DataPointStyle="{StaticResource CustomDataPoint}" RenderTransformOrigin="0.481,0.467"/>

    <toolkit:Chart.Axes>

        <toolkit:LinearAxis ShowGridLines="True" Orientation="Y" AxisLabelStyle="{StaticResource CustomAxisLabel}"></toolkit:LinearAxis>

    </toolkit:Chart.Axes>

</toolkit:Chart>

using System;

using System.Collections.Generic;

using System.Windows.Controls;

using System.Windows.Controls.DataVisualization.Charting;

namespace SilverlightApplication1

{

    public partial class MainPage : UserControl

    {

        public MainPage()

        {

            InitializeComponent();

            svcCubeConnector.CubeConnectorClient client = new svcCubeConnector.CubeConnectorClient();

            client.GetDataCompleted += client_GetDataCompleted;

            client.GetDataAsync("SELECT NON EMPTY { [Measures].[AMOUNT] } ON COLUMNS, NON EMPTY { ([Account Type].[ACCOUNT DESC].[ACCOUNT DESC].ALLMEMBERS ) } DIMENSION PROPERTIES MEMBER_CAPTION ON ROWS FROM [MyCube]");

        }

        void client_GetDataCompleted(object sender, svcCubeConnector.GetDataCompletedEventArgs e)

        {

            IEnumerable<Dictionary<string, Object>> result = e.Result;

            List<ChartClass> chartCollection = new List<ChartClass>();

            object seriesName;

            object seriesValue;

            foreach (Dictionary<String, Object> _item in result)

            {

                // I am querying Dictionary with the Key

                _item.TryGetValue("[Account Type].[ACCOUNT DESC].[ACCOUNT DESC].[MEMBER_CAPTION]", out seriesName);

                _item.TryGetValue("[Measures].[AMOUNT]", out seriesValue);

                chartCollection.Add(new ChartClass { SeriesName = seriesName.ToString(), SeriesValue = Convert.ToDouble(seriesValue) });

            }

            ((ColumnSeries)MyChart.Series[0]).ItemsSource = chartCollection;

        }

    }

    {

        public string SeriesName { get; set; }

        public double SeriesValue { get; set; }

    }

}