I am binding an arraylist of objects (class Invoice) This works fine and
binds all the public properties to the datagrid.

However, I only want to show *some* properties e.g. No, Detail and
TotalValue -- not all the public props.

After I call my gridSummary.DataSource = invoiceList;

then I create a new GridTableStyle and add some mappings, clear the existing
TableStyles then Add my new table style

*Nothing happens*... any ideas ?

Sample code:

DataGridTableStyle ts = new DataGridTableStyle();

ts.MappingName = "InvoiceList";

DataGridTextBoxColumn cs = new DataGridTextBoxColumn();

cs.MappingName = "Num"; // Public property name

cs.HeaderText = "Num";

cs.Format = "f4";

cs.Width = colwidth;

ts.GridColumnStyles.Add(cs);

cs = new DataGridTextBoxColumn();

cs.MappingName = "Detail"; // Public property name

cs.HeaderText = "Detail";

cs.Width = colwidth;

ts.GridColumnStyles.Add(cs);

// Add the custom tablestyle to the DataGrid

InvoiceSummary.TableStyles.Clear();

InvoiceSummary.TableStyles.Add(ts);