Added new kb article export-charts-png-300dpi-spreadprocessing #607
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dessyordanova
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| #### Sample implementation for exporting charts as PNG with 300 DPI: | ||
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| ```csharp |
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The code snippet is incomplete. There is no import of document, extracting the chartShape, and creating a FixedContentEditor. Consider expanding the snippet so it is buildable once pasted in a project.
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| title: Exporting Charts from Excel Documents to PNG Images with a Specific DPI Resolution Using SpreadProcessing | |||
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Consider rephrasing the titles and descriptions to include the use of the UI for WinForms and WPF suites, as well as the PdfProcessing library. Currently, only the SpreadProcessing library is mentioned.
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| ## Description | ||
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| Learn how to extract the [charts]({%slug radspreadprocessing-features-charts%}) from Excel documents and save as PNG files specifying the desired resolution, e.g. 300 DPI. |
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Edit: Learn how to extract the [charts]({%slug radspreadprocessing-features-charts%}) from Excel documents and save them as PNG files, while specifying the desired resolution (e.g. 300 DPI).
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| ## Solution | ||
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| Exporting charts directly from Excel files to PNG images with a specific resolution (e.g.300 DPI) using Telerik [SpreadProcessing]({%slug radspreadprocessing-overview%}) is not supported. SpreadProcessing focuses on spreadsheet data manipulation and exporting to formats like XLSX and PDF but does not handle chart export or DPI settings. |
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This whole paragraph is irrelevant and can be trimmed, as it focuses on what the library cannot do. Consider adding a description of the actual approch that needs to be taken.
For example: Exporting Charts from Excel files to images is not yet supported by the SpreadProcessing library. As an alternative...
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| ### Alternative Approach: Exporting to PDF | ||
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| Export the XLSX document to PDF format using SpreadProcessing. This method internally uses a **chart renderer** for rendering charts in the PDF. Implement a custom [IPdfChartRenderer]({%slug radspreadprocessing-features-charts-pdf-export%}) to manipulate chart resolution and save the chart as a PNG image in the ongoing export process. |
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Add code snippet for this approach as well.
YoanKar
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