Problem with delete table row in FlowDocument.

I add usercontroll and tablerow add tablerowgroup then add in FlowDocumentScrollViewer but i have problem with Right Click  Delete row that i add already in FlowDocumentScrollViewer ,How should i do for delete current table that Right click.Can you help me? Can give simple or solution for me?

Ex code:

 var textMessageTableCell = newTableCell();         var textMessageControl = new MyPrivateControl(messageData, textMessageTableCell);         var usernameParagraph = newSection();         var newTableRow = newTableRow();         newTableRow.Tag = messageData;         textMessageControl.Text = messageData.Message;         var textMessageContainer = newBlockUIContainer();         textMessageControl.HorizontalAlignment = HorizontalAlignment.Center;         textMessageContainer.Child = textMessageControl;         usernameParagraph.Blocks.Add(textMessageContainer);         usernameParagraph.Padding = newThickness(0);                 textMessageTableCell.ColumnSpan = 3;         textMessageTableCell.Blocks.Add(usernameParagraph);         newTableRow.Cells.Add(textMessageTableCell);         textMessageTableCell.Padding = newThickness(0, 10, 0, 10);         var MessageRows = (TableRowGroup)doc.FindName("MessageRows");         MessageRows.Rows.Add(newTableRow);