Binding a matrix to datagrid - silverlight

Question

I have a Datagrid called previewTable.
I have a collection of collections of strings which represents the table data:
ObservableCollection<ObservableCollection<string>> tableData
I also have a collection of strings which represent columns headers:
ObservableCollection<string> columnsHeaders
I need to create columns using the columns headers collection, I achieve this here:
foreach (string columnName in columnsHeaders)
{
DataGridTextColumn column = new DataGridTextColumn();
column.Header = columnName;
previewTable.Columns.Add(column);
}
Now I need to bind the table to the data.
The problem is:
previewTable.ItemsSource = table
Doesn't work.
I always have 9 column headers and each collection size in the data is 9.
Help would be appreciated

Answer 1

Some additional classes:
public class EntityDataRow
{
public List<string> Items { get; set; }
}
public class RowItemsConverter : IValueConverter //converter for binging
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
try
{
var list = (List<string>) value;
var index = (Int32) parameter;
return list[index];
}
catch(Exception)
{
return String.Empty;
}
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
And this is your code (data is a list of EntityRow)
var headers = data[0].Items;
data.RemoveAt(0);
PreviewGrid.Columns.Clear();
PreviewGrid.ItemsSource = data;
for (var i = 0; i < headers.Count; i++)
{
var column = new DataGridTextColumn { Header = headers[i] };
var binding = new Binding("Items");
var converter = new RowItemsConverter();
binding.Converter = converter;
binding.ConverterParameter = i;
column.Binding = binding;
PreviewGrid.Columns.Add(column);
}

Answer 2

You can use indexers in bindings so the following ought to work:-
int i = 0;
foreach (string columnName in columnsHeaders)
{
DataGridTextColumn column = new DataGridTextColumn();
column.Header = columnName;
column.Binding = new Binding("[" + i.ToString(); + "]");
previewTable.Columns.Add(column);
i += 1;
}