With the current implementation, the compression setting is omitted:

• streamWriter.Settings.StreamCompression

Provide the ability to work with images in headers/footers of a worksheet. Note that large images put in headers are visualized as watermarks on printing/exporting to PDF.
Watermark in Excel: https://support.office.com/en-us/article/add-a-watermark-in-excel-a372182a-d733-484e-825c-18ddf3edf009
 

Currently, the numbers in a CSV file are parsed as numbers, and the leading zeros are lost. In MS Excel, leading zeros could be preserved when the values are imported as text using the more sophisticated text import wizard (http://www.upenn.edu/computing/da/bo/webi/qna/iv_csvLeadingZeros.html ).

Workaround: The values could be extracted using a third-party (or custom) CSV parser, and inserted manually into the model, using CellSelection.SetValueAsText method (http://docs.telerik.com/devtools/document-processing/libraries/radspreadprocessing/working-with-cells/cell-value-types.html ).

Add support for GoToR action

Note: related item: PdfProcessing: Introduce functionality to preserve GoToR actions during import/export

When there is an abstractNum defined with the same abstractNumId in word\glossary\numbering.xml and in the word\numbering.xml, a "System.ArgumentException: An item with the same key has already been added." exception is thrown.

In other cases, the import overwrites the styles from the main document part with the ones defined in the glossary or fails to import different parts of the content. 

Workaround: Delete the glossary files:

string path = "File.docx";
using (Stream str = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
	using (ZipArchive archive = ZipArchive.Update(str, null))
	{
		foreach (ZipArchiveEntry entry in archive.Entries.ToList())
		{
			if (entry.FullName.Contains("glossary/"))
			{
				entry.Delete();
			}
		}
	}

	DocxFormatProvider provider = new DocxFormatProvider();
	RadFlowDocument flowDocument = provider.Import(str, null);
}

Getting an exception message when trying to view a document as a PDF using the PdfFormatProvider which started happening only after upgrading Telerik to the latest version, 7.1.0 in Telerik UI for Blazor.

Exception Message:

width should be greater or equal than 0. (Parameter 'width')

I have copied the stack trace and source of the exception below:

Source: Telerik.Documents.Fixed

Stack Trace:    at Telerik.Windows.Documents.Fixed.Model.Editing.Layout.ContentElementLayoutElementBase`1.DrawHighlights(DrawLayoutElementContext context)
   at Telerik.Windows.Documents.Fixed.Model.Editing.Layout.ContentElementLayoutElementBase`1.Draw(DrawLayoutElementContext context)
   at Telerik.Windows.Documents.Fixed.Model.Editing.Block.Draw(IEnumerable`1 lineElements, DrawLayoutElementContext context)
   at Telerik.Windows.Documents.Fixed.Model.Editing.Block.DrawInternal(FixedContentEditor editor, Rect boundingRect)
   at Telerik.Windows.Documents.Fixed.Model.Editing.Block.Telerik.Windows.Documents.Fixed.Model.Editing.Flow.IDrawArrangedElement.DrawArrangedElement(FixedContentEditor editor, Rect boundingRect)
   at Telerik.Windows.Documents.Fixed.Model.Editing.Flow.SectionInfo.DrawArrangedElement(IBlockElement blockElement, Double horizontalOffset, Double verticalOffset)
   at Telerik.Windows.Documents.Fixed.Model.Editing.Utils.SectionInfoExtensions.DrawArrangedElements(SectionInfo section, IList`1 elements)
   at Telerik.Windows.Documents.Fixed.Model.Editing.RadFixedDocumentEditor.Draw()
   at Telerik.Windows.Documents.Fixed.Model.Editing.RadFixedDocumentEditor.StartNewPage(SectionProperties sectionProperties)
   at Telerik.Windows.Documents.Fixed.Model.Editing.RadFixedDocumentEditor.StartNewPage()
   at Telerik.Windows.Documents.Fixed.Model.Editing.RadFixedDocumentEditor.AddBlock(IBlockElement blockElement, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.Export.PdfExporter.ExportSection(Section section, RadFixedDocumentEditor editor)
   at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.Export.PdfExporter.ExportDocument(RadFlowDocument document, RadFixedDocumentEditor editor)
   at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.Export.PdfExporter.ExportInternal()
   at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.Export.PdfExporter.Export()
   at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.PdfFormatProvider.ExportToFixedDocument(RadFlowDocument document, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.PdfFormatProvider.ExportOverride(RadFlowDocument document, Stream output, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.PdfFormatProvider.ExportOverride(RadFlowDocument document, Stream output)
   at Telerik.Windows.Documents.Common.FormatProviders.FormatProviderBase`1.Export(T document, Stream output)
   at Telerik.Windows.Documents.Common.FormatProviders.BinaryFormatProviderBase`1.Export(T document)

An error occurs while importing an XLSX document with charts. Here is the stack trace:

   at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.Contexts.XlsxWorkbookImportContext.PairSeriesGroupsWithAxes()
   at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Elements.Chart.PlotAreaElement.CopyPropertiesTo(IOpenXmlImportContext context, DocumentChart chart)
   at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Elements.Chart.ChartElement.CopyPropertiesTo(IOpenXmlImportContext context, DocumentChart chart)
   at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Elements.Chart.ChartSpaceElement.OnAfterRead(IOpenXmlImportContext context)
   at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Elements.OpenXmlElementBase.Read(IOpenXmlReader reader, IOpenXmlImportContext context)
   at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Parts.ChartPart.Import(IOpenXmlReader reader, IOpenXmlImportContext context)
   at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Parts.OpenXmlPartBase.Import(Stream stream, IOpenXmlImportContext context)
   at Telerik.Windows.Documents.FormatProviders.OpenXml.OpenXmlImporter`1.ImportPartFromArchive(ZipArchiveEntry zipEntry, PartBase part, IOpenXmlImportContext context)
   at Telerik.Windows.Documents.FormatProviders.OpenXml.OpenXmlImporter`1.Import(Stream input, IOpenXmlImportContext context)
   at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.XlsxFormatProvider.ImportOverride(Stream input, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Spreadsheet.FormatProviders.WorkbookFormatProviderBase.Import(Stream input, Nullable`1 timeout)

Add support for pivot tables.

Currently, RadSpreadProcessing supports the following options:

namespace Telerik.Windows.Documents.Model.Drawing.Charts
{
    /// <summary>
    /// Specifies where a chart legend is placed relative to the plot area.
    /// </summary>
    public enum LegendPosition
    {
        /// <summary>
        /// Positions the legend to the right of the plot area.
        /// </summary>
        Right,

        /// <summary>
        /// Positions the legend below the plot area.
        /// </summary>
        Bottom,

        /// <summary>
        /// Positions the legend to the left of the plot area.
        /// </summary>
        Left,

        /// <summary>
        /// Positions the legend above the plot area.
        /// </summary>
        Top
    }
}

MS Excel supports setting "Top Right" Legend Position:

Currently, if you have a decimal column in the DataTable, it is imported as a text column in the workbook. It should be preserved as a numeric column after importing.

Note: When importing a DataTable, each of the column's type is checked and a respective cell type is imported. 

 if (dataType.IsValueType && dataType.IsPrimitive && !dataType.IsEnum)
                    {
                        newValue = new NumberCellValue(Convert.ToDouble(value));
                    }

This is the code for import/export which result is illustrated below:

            string inputFilePath = "test1.doc";
            Telerik.Windows.Documents.Flow.Model.RadFlowDocument document;
            Telerik.Windows.Documents.Flow.FormatProviders.Doc.DocFormatProvider doc_provider = new Telerik.Windows.Documents.Flow.FormatProviders.Doc.DocFormatProvider();
            using (Stream input = File.OpenRead(inputFilePath))
            {
                document = doc_provider.Import(input, TimeSpan.FromSeconds(10));
            }

            Telerik.Windows.Documents.Flow.FormatProviders.Docx.DocxFormatProvider docx_provider = new Telerik.Windows.Documents.Flow.FormatProviders.Docx.DocxFormatProvider();
            string outputFilePath = "Exported.docx";
            using (Stream output = File.OpenWrite(outputFilePath))
            { 
                docx_provider.Export(document, output, TimeSpan.FromSeconds(10));
            }

            Process.Start(new ProcessStartInfo() { FileName = outputFilePath, UseShellExecute = true });