Question

I came across this pretty little piece of code here:

 List<DataTable> result = DTHead.AsEnumerable()
            .GroupBy(row => row.Field<int>("MIVID"))
            .Select(g => g.CopyToDataTable())
            .ToList();

It creates a List of DataTable‘s based on the value of a particular field.

Is it possible to tweak this code to instead create a List of DataTables based on the number of records? For example, if I have 18 records, I would want that broken into 2 DataTables with 10 rows each (the last two rows of the second table would be empty). If I have 35 records, I end up with 4 DataTable‘s, the last 5 rows empty on table 4.

Thanks!

Answer 1

This is like a standard paging mechanism:

var result = DTHead.AsEnumerable();

int pageSize = 10;
int pages = result.Count / pageSize + 1;
for (int i = 0; i < pages; i++)
{
    var page = result.Skip(i * pageSize).Take(pageSize).Select (t => t.Name)
                     .CopyToDataTable();
}

Of course within the loop you’d have to do something meaningful with the page variable.