Template support multiple level collection expand

[shps951023]

e.g

---

I think it need like vue template engine

[shps951023]

能不能针对实体里面再嵌套实体的做通用导出 · Issue #184 · dotnetcore/Magicodes.IE

[shps951023]

https://closedxml.github.io/ClosedXML.Report/docs/en/Nested-ranges_-Master-detail-reports

[michelebastione]

I think the feature added in #959 is close enough to what was proposed here, so I'll be closing this for now. Let's circle back to it if and when we acquire new perspectives on it.