Render grid lines

GroupDocs.Viewer does not render grid lines of Spreadsheets by default. To enable rendering of grid lines you just need to set HtmlViewOptions (or JpgViewOptions, or PngViewOptions, or PdfViewOptions) object SpreadsheetOptions.RenderGridLines property to true in order to render the grid lines.

The following code sample shows how to enable rendering of grid lines.

using (Viewer viewer = new Viewer("sample.xlsx"))
    HtmlViewOptions viewOptions = HtmlViewOptions.ForEmbeddedResources();
    viewOptions.SpreadsheetOptions.RenderGridLines = true;

More resources

View Excel Files Online

Along with full-featured .NET library we provide simple but powerful free online Apps. View Excel XLS, XLSX, and XLSB files online with GroupDocs Viewer App.

GitHub Examples

You may easily run the code above and see the feature in action in our GitHub examples: