Programmatically add rows to a Table element.

   
  


<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"    
    x:Class="WpfApplication1.Window1"
    Title="Add Content to a Table">
  <FlowDocumentScrollViewer HorizontalAlignment="Left" VerticalAlignment="Top">
    <FlowDocument>
      <Paragraph>
        <Button Canvas.Left="5" Click="AddRow">Add a New TableRow to the Table</Button>
      </Paragraph>

      <Table CellSpacing="5" Name="table1">
        <Table.Columns>
          <TableColumn/>
        </Table.Columns>
        <TableRowGroup Name="trg1">
          <TableRow>
            <TableCell>
              <Paragraph FontSize="14pt">TableRow</Paragraph>
            </TableCell>
          </TableRow>
        </TableRowGroup>
      </Table>
    </FlowDocument>
  </FlowDocumentScrollViewer>
</Window>
//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;

namespace WpfApplication1
{

  public partial class Window1 : Window
  {
        public void AddRow(object sender, RoutedEventArgs e)
        {
            TableRow row = new TableRow();
            trg1.Rows.Add(row);
            Paragraph para = new Paragraph();
            para.Inlines.Add("A new Row and Cell have been Added to the Table");
            TableCell cell = new TableCell(para);
            row.Cells.Add(cell);
        }
    }
}