是否有可能RowExpander不是 HTML 而是另一行？也就是说，一行有一个展开 [+] 图标，然后展开时，子行看起来像“子行”？
例如我有一个List<ModelData>这样的：
ModelData column1 = new BaseModelData();
column1.set("Date", "11-11-11");
column1.set("Time", "11:11:11");
column1.set("Code", "abcdef");
column1.set("Status", "OK");
ModelData column2 = new BaseModelData();
column2.set("Date", "11-11-11");
column2.set("Time", "12:11:11");
column2.set("Code", "abcdef");
column2.set("Status", "Failed");
ModelData column3 = new BaseModelData();
column3.set("Date", "11-11-11");
column3.set("Time", "13:11:11");
column3.set("Code", "abcedf");
column3.set("Status", "Failed");
ModelData column4 = new BaseModelData();
column4.set("Date", "11-11-11");
column4.set("Time", "14:11:11");
column4.set("Code", "abcdef");
column4.set("Status", "Failed");
List<ModelData> data = ...
data.add(model1);
data.add(model2);
data.add(model3);
data.add(model4);
并且这将在 Grid 中呈现为两列（按CodeandStatus列分组）：
Date | Time | Code | Status
-------------------------------------
11-11-11 | 11:11:11 | abcedf | OK
[+] 11-11-11 | 12:11:11 | abcedf | Failed
|--->11-11-11 | 13:11:11 | abcedf | Failed
|--->11-11-11 | 14:11:11 | abcedf | Failed
像这样的东西。
更新：
我被告知解决方案是扩展RowExpander类并与类合并GridView。