Currently, these are the supported image formats:

If we try to import an Excel document containing an image with another format, the following error occurs:

System.Collections.Generic.KeyNotFoundException: 'The given key was not present in the dictionary.'

Add support for Radar charts.

FormatException is thrown when getting the formatted cell value as string using "H" format.

Optimize font fallback mechanism.

Currently, in NET Standard, if no fonts are provided on PDF export, while resolving the fonts the application falls back to different fonts multiple times for each cell which causes a decrease in performance.

In Excel this can be achieved by right click on the axis, then from the context menu select "Format Axis".  Go to the "Text Options" tab and "Text Box" group and then in the "Custom angle" field insert the desired value.

Error bars in charts you create can help you see margins of error and standard deviations at a glance. They can be shown on all data points or data markers in a data series as a standard error amount, a percentage, or a standard deviation. You can set your own values to display the exact error amounts you want. 

https://support.microsoft.com/en-us/office/add-change-or-remove-error-bars-in-a-chart-e6d12c87-8533-4cd6-a3f5-864049a145f0 

ArgumentNullException is thrown when importing a document containing a rule with no set format.

Some fonts are not measured correctly by RadTextMeasurer.

Handle import of documents containing XLSX-incompatible names.

Import-export of a document with unsupported charts results in an invalid document.

Add support for "Of Pie" charts (ofPieChart).

trying to open the attached workbook with this code:

Telerik.Windows.Documents.Spreadsheet.Model.Workbook workbook;
using (Stream input = File.OpenRead("sample.xlsx"))
{
  var provider = new Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.XlsxFormatProvider();
  // The import method enables you to also pass a byte[] with the XLSX document data
  workbook = provider.Import(input, TimeSpan.FromSeconds(30));
}

I get an unhandled exception:

An unhandled exception of type 'System.ArgumentNullException' occurred in Telerik.Documents.Spreadsheet.dll
Value cannot be null.

Any idea what's going on?

Thank you for your time,

 

Phil

ConditionalFormattingRange' s Formattings collection is not correctly enumerated when there are rules with intermittent ranges.

Apply Note style:

Set None Fill:

 

Chart with missing shape properties (shPr) is corrupted with black background after PDF export.

https://support.microsoft.com/en-us/office/eomonth-function-7314ffa1-2bc9-4005-9d66-f49db127d628 

Cached formula values are not respected for the AdditionExpression type.

GetResultValueAsString returns "#NAME?".

Add support for setting the Axis Type to Automatic.

Add support for the FILTER function.