1金币
最佳答案你可以参考文档,
https://www.grapecity.com/componentone/docs/win/online-excel/excelfornetquickstart.html
保存为xlsx需要指定格式为openxml
https://www.grapecity.com/componentone/docs/win/online-excel/C1.C1Excel.4.5.2~C1.C1Excel.C1XLBook~Save(String,FileFormat).html
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