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In VSTO, the Excel chart can be exported by the function: chart.export(). But the quality of exported image is so bad and the resolution can not be selected, like: Programmatically (C#) convert Excel to an image.

So are there any other methods that can be used to converting an Excel chart to a high-resolution image and vectorgraph in C#.

Daniel Widdis
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Peter Zhang
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  • What type of data is in the chart? Look for Octave or GNUplot (free) or Matlab (expensive). There is nice `exportfig` package for Matlab (using ghostscript) for creating high quality pdf images. – Crowley Feb 13 '18 at 01:51

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There is 2 solutions to your problem:

1- If you manually zoom in excel before using the export fonction, then the resulting image will have a bigger resolution.

2- Just use this solution: https://stackoverflow.com/a/43143437/9448877

Maxter
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