如何使用字典向SL4中的DataGrid(XAML)提供数据(在运行时定义)

我正在寻找有关如何使用字典向数据报提供数据的信息。我的用例是:我有WebService,它为我提供一个表,其中包含我在运行时了解的内容(和列名)。

我当前对数据元组的实现是:

 public class GridTuple : Dictionary<string, string>
    {

    public GridTuple(IDictionary<string, string> cv, int id) : base(cv)
    {               
        TupleId = id;
    }

    public int TupleId { set; get; }

    public override string ToString()
    {

        string result = TupleId + " ";
        for (int i = 0; i < ColumnNames.Names.Count; i++)
        {
            result += ColumnNames.Names[i] + " " + this[ColumnNames.Names[i]] + " ";
        }
        return result;

    }
}

…XAML中DataGrid的实现是:

<sdk:DataGrid AutoGenerateColumns="True" HeadersVisibility="All" x:Name="dataGrid"
                   HorizontalAlignment="Left" VerticalAlignment="Top"                          

                    ItemsSource="{Binding ListOfGridTuples}" MouseLeftButtonUp="dataGrid_MouseLeftButtonUp" 
                          SelectionMode="Single" Grid.Column="1" >

                <sdk:DataGrid.Columns>
                       <!-- ValueForColumn1 is a key in my GridTuple -->
                    <sdk:DataGridTextColumn Binding="{Binding [ValueForColumn1]}" />
                </sdk:DataGrid.Columns>

 </sdk:DataGrid>

…