Aspose.Words for .NET 20.11 Release Notes

Major Features

There are 80 improvements and fixes in this regular monthly release. The most notable are:

  • Document.SpellingChecked and Document.GrammarChecked properties were exposed publicly.
  • Charts data points API was extended.
  • Implemented basic support for rendering fonts with legacy Arabic encodings.

Full List of Issues Covering all Changes in this Release

Key Summary Category
WORDSNET-10130 Implement table row wrapping around floaters as MS Word 2013 does New Feature
WORDSNET-16527 Incorrect RTL table row wrapping around a floater in 2013 mode New Feature
WORDSNET-18416 DOCX to PDF conversion issue with table position Enhancement
WORDSNET-20148 Table row does not break across pages Enhancement
WORDSNET-20626 Converting DOC/DOCX to PDF - Page break issue Enhancement
WORDSNET-21179 Saving requires a seekable stream Enhancement
WORDSNET-14311 Font type is changed after converting Word to PDF Enhancement
WORDSNET-21147 Expected a value between 0 and 22024 error occurs during Rendering a DOC Bug
WORDSNET-21198 Creating instance of LayoutEnumerator throws System.NullReferenceException Bug
WORDSNET-13856 DOCX to PDF conversion issue with Arabic font rendering Bug
WORDSNET-21240 Font size of the text is changed after re-saving BIDI RTF Bug
WORDSNET-21265 Missing half of file when saving same DOCX file twice Bug
WORDSNET-5827 Table overflow problem, while saving a document with PdfSaveOptions Bug
WORDSNET-18262 Charts x-axis values and their layout is incorrect in PDF Bug
WORDSNET-4745 Export theme fonts to RTF Bug
WORDSNET-11765 Some characters are not rendering in PS Bug
WORDSNET-18874 ChartSeries.DataPoints.Count returns incorrect value Bug
WORDSNET-21201 Field result incorrectly compared Bug
WORDSNET-11769 Some characters are not rendering in PostScript Bug
WORDSNET-21007 Content misplaced after DOC to PDF conversion Bug
WORDSNET-21013 DivideByZeroException when call UpdatePageLayout for attached document Bug
WORDSNET-13875 Spell check disabled after a document save Bug
WORDSNET-18286 The font is missing in the output PDF document Bug
WORDSNET-21209 Content control does not lock after inserting HTML Bug
WORDSNET-17381 Arabic Fonts not rendering correctly in PDF Bug
WORDSNET-21217 Some tests failed upon converting Bug
WORDSNET-11515 AW layout may not match to MS Word when a font Spacing is negative (condensed) Bug
WORDSNET-21220 Empty SDT rendered as a control to PDF leads to incorrect aps tree structure Bug
WORDSNET-21045 System.NullReferenceException during DOCX to PDF conversion Bug
WORDSNET-20203 Property inheritance issue of chart data labels Bug
WORDSNET-18656 Issue with SDT blocks when Section break inside it Bug
WORDSNET-21225 PDF can not be opened Bug
WORDSNET-21226 Incorrect position of SVG images grouped together Bug
WORDSNET-20427 Page number renders incorrectly in output PDF Bug
WORDSNET-19794 Large memory consumption during get document statistics Bug
WORDSNET-20429 Document’s text is pushed down to next pages in output PDF Bug
WORDSNET-20952 Investigate whether SkiaSharp blur effect can improve performance in .NET Standard version Bug
WORDSNET-20125 DOCX to PDF conversion issue with font rendering Bug
WORDSNET-21042 Custom properties do not export in output PDF Bug
WORDSNET-21074 Implement conversion of images from EMF to PNG during import for DOC format Bug
WORDSNET-21075 Cropping SVG images is ignored Bug
WORDSNET-21076 DOCX to HTML conversion hangs Bug
WORDSNET-21079 DOCX to PDF conversion issue with text position Bug
WORDSNET-20809 Large memory consumption during DOCX to PDF conversion Bug
WORDSNET-21204 Image RelativeHorizontalPosition does not set correctly in ODT Bug
WORDSNET-20305 Content overlaps hides header’s content in PDF Bug
WORDSNET-21141 MailMerge.ExecuteWithRegions throws System.ArgumentException Bug
WORDSNET-21031 EMF converted from SVG is truncated in output Word document Bug
WORDSNET-21099 Incorrect X-Axis tickmarks in charts when converting DOCX to PDF Bug
WORDSNET-21214 System.IndexOutOfRangeException is thrown when Noto font is set using TextWatermarkOptions Bug
WORDSNET-20924 Incorrect page range extraction Bug
WORDSNET-21122 Debug.Assert fires during fields updates Bug
WORDSNET-21126 Image size is reduced after inserting RTF into a document using InsertDocument Bug
WORDSNET-21128 DOCX to PDF conversion: System.InvalidOperationException Bug
WORDSNET-21131 INDEX field - customizing the separator between item name and page number Bug
WORDSNET-21134 Protected document crashes the MS Word Bug
WORDSNET-21136 Images (pages) are lost after DOCX to PDF conversion Bug
WORDSNET-21138 Content in the last cell of the table get duplicated after breaking the mapping Bug
WORDSNET-21267 Can not convert from PDF to Markdown Bug
WORDSNET-21150 Debug.Assert fires in UpdateTableBlockRow method Bug
WORDSNET-21104 Hyperlink inserted via ReportingEngine does not navigate to the bookmarked location Bug
WORDSNET-21195 System.NullReferenceException occurs upon DOCX to PDF conversion Bug
WORDSNET-21152 System.ArgumentException while save DOCX to Html Bug
WORDSNET-21233 Table.InsertAfter throws System.InvalidOperationException Bug
WORDSNET-20403 Horizontal Category Axis Text of Chart has Incorrect Angle when Converting to Image Bug
WORDSNET-21160 Exception raised when reading CHM file Bug
WORDSNET-21162 Data labels of the category axis are rendered horizontally after converting to PDF Bug
WORDSNET-21167 Contents are pushed down to next pages after DOCX to PDF conversion Bug
WORDSNET-21202 Incorrect cropping of textbox contents Bug
WORDSNET-21281 RemoveStaticFields with MailMerge: The hyperlinks are no longer working in the output Bug
WORDSNET-21270 Aspose.Words cannot open WordML with <w:tab w:val=“start” /> Bug
WORDSNET-20548 Transparent images in generated RTF have black background Bug
WORDSNET-8318 FieldCode of a deleted REF field appears in fixed page formats Bug
WORDSNET-8215 Hebrew content in dropdown form fields is inverted during Doc to TIFF conversion Bug
WORDSNET-8532 RenderedDocument.Pages.Count return incorrect value Bug
WORDSNET-4008 Shape is improperly rendered Bug
WORDSNET-11161 Hidden text should not be hyphenated Bug
WORDSNET-19910 Footnotes are rendered wrong Bug
WORDSNET-21057 Shapes are overlapped after DOCX to PDF conversion Bug
WORDSNET-21184 Document.UpdateFields throws System.NullReferenceException Bug

Public API and Backward Incompatible Changes

This section lists public API changes that were introduced in Aspose.Words 20.11. It includes not only new and obsoleted public methods, but also a description of any changes in the behavior behind the scenes in Aspose.Words which may affect existing code. Any behavior introduced that could be seen as regression and modifies existing behavior is especially important and is documented here.

Added a new public properties Document.SpellingChecked and Document.GrammarChecked

Related issue: WORDSNET-13875

Added a new public property Document.SpellingChecked:

A new public property IgnorePrinterMetrics has been added to the LayoutOptions class.

/// <summary>
/// Returns <b>true</b> if the document has been checked for spelling.
/// </summary>
/// <remarks>
/// To recheck the spelling in the document, set this property to <b>false</b>.
/// </remarks>
public bool SpellingChecked

Added a new public property Document.GrammarChecked:

/// <summary>
/// Returns <b>true</b> if the document has been checked for grammar.
/// </summary>
/// <remarks>
/// To recheck the grammar in the document, set this property to <b>false</b>.
/// </remarks>
public bool GrammarChecked

Use Case:

Document doc = new Document(fileName);
// Verifying if this document has been checked for spelling or grammar.
if (doc.SpellingChecked || doc.GrammarChecked)
	// The string with spelling errors.
	doc.FirstSection.Body.FirstParagraph.FirstRun.Text = "The speeling in this documentz is all broked";
	// Spelling check start. 
	doc.SpellingChecked = false; 
	// Grammar check start. 
	doc.GrammarChecked = false;

Changes in API of chart data points

The following changes in chart data points API have been implemented (WORDSNET-18874):

  • The this property of the ChartDataPointCollection class has been changed to automatically create a data point if it does not exist yet. In the past, a point representing default data point properties was returned at this case.
  • The Count property of the ChartDataPointCollection class has been changed to return a number of all data points of series, not just those that have non-default formatting, as it was in the previous versions of the software.
  • The enumerator of the ChartDataPointCollection class has been changed to go through all data points of a series, not just those with non-default formatting.
  • The ClearFormat method has been added to the ChartDataPointCollection class.
  • The ClearFormat method has been added to the ChartDataPoint class.
  • The Add, RemoveAt and Clear methods have been marked as obsolete. The collection contains all data points of series now and there is no need to add points to it. The RemoveAt and Clear methods actually reset the formatting of data point(s) to default values, so the ClearFormat methods can be used instead.
public class ChartDataPointCollection
	/// <summary>
	/// Adds new <see cref="ChartDataPoint"/> at the specified index.
	/// </summary>
	[Obsolete("All data points are available in this collection.")]
	public ChartDataPoint Add(int index);

	/// <summary>
	/// Clears format of a <see cref="ChartDataPoint"/> at the specified index.
	/// </summary>
	[Obsolete("Use the ChartDataPoint.ClearFormat method instead.")]
	public void RemoveAt(int index);

	/// <summary>
	/// Clears format of all <see cref="ChartDataPoint"/> in this collection.
	/// </summary>
	[Obsolete("Use the ClearFormat method instead.")]
	public void Clear();

	/// <summary>
	/// Clears format of all <see cref="ChartDataPoint"/> in this collection.
	/// </summary>
	public void ClearFormat();

public class ChartDataPoint
	/// <summary>
	/// Clears format of this data point. The properties are set to the default values defined in the parent series.
	/// </summary>
	public void ClearFormat();

Use Case:

Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);
Shape shape = builder.InsertChart(ChartType.Line, 432, 252);
Chart chart = shape.Chart;

// Delete default generated series.

ChartSeries series = chart.Series.Add("Series 1",
	new string[] { "Category 1", "Category 2", "Category 3" },
	new double[] { 1, 5, 4 });

series.Marker.Symbol = MarkerSymbol.Square;
series.Marker.Size = 10;

series.DataPoints[1].Marker.Symbol = MarkerSymbol.Circle;
series.DataPoints[1].Marker.Size = 15;

doc.Save(dir + "DataPoints.docx");

Reference: WORDSNET-21281

In the past, we satisfied a customer’s request for removing HYPERLINK fields in TOC field result when the MailMergeCleanupOptions.RemoveStaticFields option is specified. However, MS Word retains them, and an ES customer asked us to change Aspose.Words' behaviour accordingly (WORDSNET-21281). We have implemented that in 20.11.

Here is the code snippet for backward compatibility:

foreach (FieldPageRef field in document.Range.Fields.OfType<FieldPageRef>())

foreach (FieldHyperlink field in document.Range.Fields.OfType<FieldHyperlink>())
	HashSet<Inline> hyperlinkNodes = new HashSet<Inline>();
	Node resultNode = field.Separator;
	while (true)
		if (resultNode is Inline inline && inline.Font.StyleIdentifier == StyleIdentifier.Hyperlink)

		if (resultNode == field.End)

		resultNode = resultNode.NextSibling;

	// Unlink method clears Hyperlink style according to MS Word behaviour.

	foreach (Inline inline in hyperlinkNodes)
		inline.Font.StyleIdentifier = StyleIdentifier.Hyperlink;