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Hope you are still interested in resolution of this issue. Actually here is no bug in Aspose.Words. Tab stops can be defined in:
Paragraphs. You can access them using Paragraph.ParagraphFormat.TabStops.
Paragraph styles. You can access then using Style.ParagraphFormat.TabStops.
ListLevel. There is no way to access ListLevel’s TabStop itself, but you can get its position. Use ListLevel.TabPosition property.
Document. Finally, default TabStop can be specified on Document level. See Document.DefaultTabStop.
TabStopCollection provides method Clear(), which removes all TabStops form the collection. However, sometimes if call for example paragraph.ParagraphFormat.TabStops.Clear(); in the output document you will still see one TabStop. This is not a bug, this occurs because MS Word shows all TabStops of paragraph, i.e. TabStops from Paragraph, Style and ListLevel (if paragraph is list item). So in order to remove all TabStops of a particular paragraph you should use code like the following:
/// Method clears all TabStops asociated with the paragraph.
private static void ClearAllTabStops(Paragraph paragraph)
// TabStops of paragraph can be defined in three places:
// 1 - In Paragraph itself, we can access them using ParagraphFormat.
// 2 - In the Style asociated with the paragraph.
// 3 - If paragraph is list item, then TabPosition is TabStop of the paragraph.
// Clear paragraph's TabStops.
// Clear TabStops from paragraph's style.
Style paragraphStyle = paragraph.ParagraphFormat.Style;
// Finaly clear TabPosition if the paragraph is list item.
paragraph.ParagraphFormat.TabStops.Add(paragraph.ListFormat.ListLevel.TabPosition, TabAlignment.Clear, TabLeader.None);
In your case, you need to clear all TabStops of a style. So your code will look like the following.
Document doc = new Document(@"Test001\Tabstop.dot");
Style relineStyle = doc.Styles["Re Line"];
if (relineStyle.ListFormat != null)
relineStyle.ParagraphFormat.TabStops.Add(relineStyle.ListFormat.ListLevel.TabPosition, TabAlignment.Clear, TabLeader.None);
Please let me know in case of any issues, I will be glad to help you.