When converting HTML to DOCX, margins set on an HTML element are ignored. These styles are exported correctly when the HTML passed to the converter is formatted with indents. The following XUnit test demonstrates this behavior with a simplified example.
using Telerik.Windows.Documents.Flow.FormatProviders.Docx;
using Telerik.Windows.Documents.Flow.FormatProviders.Html;
namespace MSPI.Tests.Unit;
public class WordExportTest
{
[Fact]
public async Task TextExport()
{
const string formattedDocumentSavePath = @"C:\Testing\export-test-formatted.docx";
const string formattedContent = """"
<p>Test paragraph</p>
<ol style="margin-left: 100px;">
<li>Item 1</li>
<li>Item 2</li>
</ol>
"""";
const string minifiedDocumentSavePath = @"C:\Testing\export-test-minified.docx";
const string minifiedContent = """"<p>Test paragraph</p><ol style="margin-left: 100px;"><li>Item 1</li><li>Item 2</li></ol>"""";
var htmlFormatProvider = new HtmlFormatProvider();
var docxFormatProvider = new DocxFormatProvider();
await using var minifiedDocumentMemoryStream = new MemoryStream();
var minifiedRadFlowDocument = htmlFormatProvider.Import(minifiedContent, TimeSpan.FromSeconds(30));
docxFormatProvider.Export(minifiedRadFlowDocument, minifiedDocumentMemoryStream, TimeSpan.FromSeconds(30));
var minifiedBytes = minifiedDocumentMemoryStream.ToArray();
await File.WriteAllBytesAsync(minifiedDocumentSavePath, minifiedBytes);
await using var formattedDocumentMemoryStream = new MemoryStream();
var formattedRadFlowDocument = htmlFormatProvider.Import(formattedContent, TimeSpan.FromSeconds(30));
docxFormatProvider.Export(formattedRadFlowDocument, formattedDocumentMemoryStream, TimeSpan.FromSeconds(30));
var formattedBytes = formattedDocumentMemoryStream.ToArray();
await File.WriteAllBytesAsync(formattedDocumentSavePath, formattedBytes);
}
}The minified HTML produces the following document:
The formatted HTML produces the following document:
string inputFileName = "input.xlsx";
if (!File.Exists(inputFileName))
{
throw new FileNotFoundException(String.Format("File {0} was not found!", inputFileName));
}
Telerik.Windows.Documents.Spreadsheet.Model.Workbook workbook;
IWorkbookFormatProvider formatProvider = new Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.XlsxFormatProvider();
using (Stream input = new FileStream(inputFileName, FileMode.Open))
{
workbook = formatProvider.Import(input, TimeSpan.MaxValue);
}
string outputFilePath = "output.xlsx";
using (Stream output = new FileStream(outputFilePath, FileMode.Create))
{
formatProvider.Export(workbook, output, TimeSpan.MaxValue);
}
Process.Start(new ProcessStartInfo() { FileName = outputFilePath, UseShellExecute = true });
Read the documentation for CancelationTokenSource.CancelAfter:
this method will throw an ArgumentOutOfRangeException when: delay.TotalMilliseconds is less than -1 or greater than Int32.MaxValue (or UInt32.MaxValue - 1 on some versions of .NET). Note that this upper bound is more restrictive than TimeSpan.MaxValue.
----------------------------------------------------
your code in CancelationTokenSourceFactory.CreateTokenSource does this check:
if (timeSpan.HasValue && timeSpan.Value != TimeSpan.MaxValue)this check for TimeSpan.MaxValue seems totally pointless here, if timeSpan is anything between ~2147483647 and 922337203685476 milliseconds long this will still just throw a ArgumentOutOfRangeException.
I suspect that this check was intended as a way to prevent creating a cancellation timer that never triggers in the CancellationTokenSource, which should look like this:
if (timeSpan.HasValue && timeSpan != Timeout.InfiniteTimeSpan) //Timeout.InfiniteTimeSpan is -1 milliseconds
In the 2025 version of the Documents packages, "TimeSpan? timeout" were added to a number of interfaces, with the old versions obsoleted, for example: IWorkbookFormatProvider.Import & IWorkbookFormatProvider.Export.
This is a very strange choice, because this limits the flexibility of the interfaces for no reason at all. By only providing the TimeSpan parameter and not a CancellationToken is currently impossible to cancel the operation because e.g. an API request was canceled.
Internally these methods are implemented by first creating a cancellation token using
using CancellationTokenSource cancellationTokenSource = CancelationTokenSourceFactory.CreateTokenSource(timeout);the token from this CancellationTokenSource is then passed to a protected method. Because this internal method uses a CancellationToken anyway, there is practically 0 development cost to exposing this in the interface, which makes the choice not to do so even more confusing.
The interfaces should expose methods that take a CancellationToken instead of a TimeSpan. This would allow for the same functionality as the TimeSpan parameter, by simply passing a cancellation token with a CancelAfter set with a TimeSpan, and an extension method could be provided for the interface which does exactly that, so users can still call these methods with a TimeSpan parameter if they wish to do so for convenience.
Please, in the next version, make these interfaces methods like this:
Workbook Import(Stream input, CancellationToken cancellationToken = default);
void Export(Workbook workbook, Stream output, CancellationToken cancellationToken = default);and, for convenience, add extension methods for these like this:
public static class WorkbookFormatProviderExtensions
{
public static Workbook Import(this IWorkbookFormatProvider workbookFormatProvider, Stream input, TimeSpan? timeout)
{
using CancellationTokenSource cancellationTokenSource = CancelationTokenSourceFactory.CreateTokenSource(timeout);
return workbookFormatProvider.Import(input, cancellationTokenSource.Token);
}
}Affected interfaces I've run into so far:
- Telerik.Windows.Documents.Spreadsheet.FormatProviders.IWorkbookFormatProvider
- Telerik.Windows.Documents.Common.FormatProviders.IFormatProvider<T>
There may be more with this same pattern, I haven't checked.
NullReferenceException when inserting a document containing a table with a document variable having a line break (\n) in its value.
Add support for pivot tables.
at System.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument) at System.Collections.Generic.Dictionary`2.FindValue(TKey key) at System.Collections.Generic.Dictionary`2.ContainsKey(TKey key) at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.Model.Elements.Worksheets.ConditionalFormattingRuleElementX14.OnAfterRead(IXlsxWorksheetImportContext context) in C:\Work\document-processing\Documents\Spreadsheet\FormatProviders\OpenXml\Xlsx\Model\Elements\Worksheets\ConditionalFormatting\x14\ConditionalFormattingRuleElementX14.cs:line 62
Purpose: Long-term archiving of electronic documents with full semantic structure.
- "A" for Archiving
Level "1a" ensures:
Tagged PDF (with proper logical structure and reading order)
Unicode text for proper text extraction and searchability
Embedded fonts (for consistent rendering)
Restrictions:
No audio/video
No encryption
No JavaScript
No external content (everything must be self-contained)
Based on: PDF 1.4 (Acrobat 5)