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What's wrong with this databing on WPF Datagrid

Posted By:      Posted Date: October 11, 2010    Points: 0   Category :WPF
I have one datagird embedded in a datagrid . 
The databing basiclly works fine .
But the embedded datagird didn't show the data ,but show the columns with empty.
What's wrong with my binding code ?
Thanks for any advice.

Below is my xaml code .
B is a Dictionary<string,object> data type  .If i replace the datagrid with listview ,it works fine .

<DataGrid ItemsSource="{Binding}"> <DataGrid.Columns> <DataGridTextColumn Binding="{Binding A}" Header="Column1" MinWidth="100"/> <DataGridTemplateColumn Header="Column2"> <DataGridTemplateColumn.CellTemplate> <DataTemplate> <DataGrid ItemsSource="{Binding B}" AutoGenerateColumns="True"/> </DataTemplate> </DataGridTemplateColumn.CellTemplate> </DataGridTemplateColumn> <DataGridTemplateColumn Header="2"> <DataGridTemplateColumn.CellTemplate> <DataTemplate> <ListView ItemsSource="{Binding B}"/> </DataTemplate> </DataGridTemplateColumn.CellTemplate> </DataGridTemplateColumn> </DataGrid.Colum

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