row.Height = new TableRowHeight(HeightType.Exact, image.Image.Height); 

<w:tblW w:w="11160" w:type="dxa"/>

<w:pgSz w:w="12240" w:h="15840"/>
<w:pgMar w:top="630" w:right="1440" w:bottom="540" w:left="1440" w:header="720" w:footer="720" w:gutter="0"/>

IEnumerable<Table> tables = document.EnumerateChildrenOfType<Table>();
foreach (Table table in tables)
{
	if (table.PreferredWidth.Type == TableWidthUnitType.Fixed)
	{
		table.PreferredWidth = new TableWidthUnit(TableWidthUnitType.Auto, table.PreferredWidth.Value);
	}
}

<w:pict ...>
  <v:shape ...>
	<v:fill opacity="39151f"/>
	<v:path .../>
	<w10:wrap anchorx="page" anchory="page"/>
  </v:shape>
</w:pict>

foreach (ImageInline image in document.EnumerateChildrenOfType<ImageInline>().ToList())
{
	UriImageSource uriImageSource = (UriImageSource)image.Image.ImageSource;
	if (uriImageSource != null && !IsValid(uriImageSource.Uri.OriginalString))
	{
		image.Paragraph.Inlines.Remove(image);
	}
}

private static bool IsValid(string uri)
{
	try
	{
		Path.GetExtension(uri);
	}
	catch (ArgumentException)
	{
		return false;
	}

	return true;
}

editor.InsertField("PAGE", "1")

var tables = document.EnumerateChildrenOfType<Table>();

var border = new Border(1, BorderStyle.Single, new ThemableColor(Colors.Black));

foreach (var table in tables)
{
    table.Borders = new TableBorders(border);

    foreach (var row in table.Rows)
    {
        foreach (var cell in row.Cells)
        {
            cell.Borders = new TableCellBorders(border);
        }
    }
}