how to export int[][] or List<List<int>> ?

[Antecer]

I have this data:

int[][] = [[1,2,3],[4,5,6]];

i want export without header:

	A	B	C
1	1	2	3
2	4	5	6
3

I need export mult int[][] to different sheet

[michelebastione]

There's a couple of ways to achieve what you're asking. The most straightforward one is probably converting your data to a DataTable:

int[][] data = [[1, 2, 3], [4, 5, 6]];
var maxLen = data.Max(x => x.Length);
 
var dt = new DataTable();
 
for (int i = 0; i < maxLen; i++) 
    dt.Columns.Add(null, typeof(int));
 
foreach (var row in data) 
    dt.Rows.Add([..row]);
 
var conf = new OpenXmlConfiguration { AutoFilter = false, FreezeRowCount = 0 };
MiniExcel.SaveAs(yourPath, dt, printHeader: false, configuration: conf);