Question

In the code below, the two lists are joined on Index. But either list could have more items than the other and i just want to join up to the list with the least items and throw the rest out from the other list. So, if list 1 has 5 items and list 2 has 7 items, I want to join both up to item 5, and ignore list 2’s remaining items. (and vice versa)

var joinLbxs = lbxShtCols.Items
    .Cast<ListItem>()
    .Select((xlFldList, index) => new
    {
        xlFldList,
        tblFldList = lbxSqlTablesCols.Items[index]
    });

Answer 1

As @Steven suggested in a comment, if you are using .Net 4.0, use the Zip() method. If you don’t, you could use MoreLinq to provide the same functionality.

Or you could do it yourself (assuming both lists are IList<T> and have fast indexer):

from i in Enumerable.Range(0, new[] { list1.Count, list2.Count }.Min())
select new
{
    item1 = list1[i],
    item2 = list2[i]
}