var doc = new RadFlowDocument();

                    var tableStyle = new Style("TableStyle", StyleType.Table);
                    tableStyle.TableProperties.Borders.LocalValue = new TableBorders(new Border(1, BorderStyle.Single, new ThemableColor(Colors.Blue)));
                    tableStyle.TableProperties.Alignment.LocalValue = Alignment.Left;
                    tableStyle.TableCellProperties.VerticalAlignment.LocalValue = VerticalAlignment.Top;
                    tableStyle.TableCellProperties.Padding.LocalValue = new Padding(0, 0, 0, 0);
                    tableStyle.TableRowProperties.TableCellSpacing.LocalValue = 0;
                    tableStyle.CharacterProperties.FontSize.LocalValue = 12;
                    doc.StyleRepository.Add(tableStyle);

                    var section = new Section(doc)
                    {
                        PageMargins = new Padding(50, 50, 50, 50),
                        PageNumberingSettings =
                        {
                            StartingPageNumber = 1,

                        }
                    };
                    doc.Sections.Add(section);

                    var paragraph = new Paragraph(doc);
                    section.Blocks.Add(paragraph);

                    Table table = new Table(doc, 0, 2)//  0 rows, 2 columns. 
                    {
                        LayoutType = TableLayoutType.FixedWidth,
                        PreferredWidth = new TableWidthUnit(700),
                        StyleId = "TableStyle"
                    };
                    // add 2 rows with 2 cells
                    TableRow row = table.Rows.AddTableRow();
                    TableCell cell = row.Cells.AddTableCell();
                    cell.PreferredWidth = new TableWidthUnit(100);
                    paragraph = cell.Blocks.AddParagraph();
                    paragraph.Inlines.AddRun($"Cell R1C1");

                    cell = row.Cells.AddTableCell();
                    cell.PreferredWidth = new TableWidthUnit(600);
                    paragraph = cell.Blocks.AddParagraph();
                    paragraph.Inlines.AddRun("Cell R1C2");

                    cell = row.Cells.AddTableCell();
                    cell.PreferredWidth = new TableWidthUnit(100);
                    paragraph = cell.Blocks.AddParagraph();
                    paragraph.Inlines.AddRun($"Cell R2C1");

                    cell = row.Cells.AddTableCell();
                    cell.PreferredWidth = new TableWidthUnit(600);
                    paragraph = cell.Blocks.AddParagraph();
                    paragraph.Inlines.AddRun("Cell R2C2");

RadFlowDocumentEditor editor = new RadFlowDocumentEditor(document);
// In my source (an html document that was converted to a Word Document higher in the code) "#ddlApplies" is where I need to place a ComboBox
// It is in a table cell.
ReadOnlyCollection<FindResult> findResults = editor.FindAll("#ddlApplies", matchCase: false, matchWholeWord: false);
foreach (var item in findResults)
{
	string foundVal = item.Runs[0].Text.Replace("#", "");
	// The full run name consists of "#ddl|Identifier". In Furture dev we will use the Identifier (which is put in as the alias) to identify which control this is so we can read in the document and update other datasets
	//var ddlContentControl = editor.InsertStructuredDocumentTag(SdtType.ComboBox);
	ComboBoxProperties properties = new ComboBoxProperties();
	// Complies --- Green
	// Does not Comply --- Red
	// Minor Variation --- Orange
	// N/A -- Grey
	properties.Items.Add(new ListItem() { DisplayText = "Complies", Value = "Complies" });
	properties.Items.Add(new ListItem() { DisplayText = "Does not Comply", Value = "Does not Comply" });
	properties.Items.Add(new ListItem() { DisplayText = "Minor Variation", Value = "Minor Variation" });
	properties.Items.Add(new ListItem() { DisplayText = "N/A", Value = "N/A" });
	// Setting the alias with the identifier.
	properties.Alias = foundVal.Split("|")[1];
	properties.Lock = Lock.SdtLocked;
	properties.Placeholder = new Placeholder() {
		PlaceholderText = "Select",
		ShowPlaceholder = true
	};
	properties.OutlineAppearance = OutlineAppearance.BoundingBoxes;
	//setting the properties
	properties.RunProperties.CopyPropertiesFrom(item.Runs[0].Properties);
	/***
	Here is where I think I need to set things. But not sure how. Client wants each option to have a different colour. They would prefer the whole cell to change, but happy if I can just get the ComboBox to change.
	
	***/
	
	//inserting the Tag and setting the default value
	editor.MoveToInlineStart(item.Runs[0]);	
	editor.InsertStructuredDocumentTag(properties, item.Runs[0], item.Runs[0]);
	item.Runs[0].Text = "Select";	

}