Question

I have a table with items that are displayed by their SortOrder. The SortOrders are not incremented very well, with values skipping anywhere from 1-100. What I want to do is flip-flop the SortOrder values of two items that are closest together, without necessarily knowing how close together they are. For example:

ItemX.SortOrder = 5;
ItemY.SortOrder = 26;

Assume no items have a sort order between 5-26.

My code needs to switch this to:

ItemX.SortOrder = 26;
ItemY.SortOrder = 5;

For some reason, my code is switching SortOrders with random items, such that:

ItemX.SortOrder = 5;
ItemY.SortOrder = 26;
ItemZ.SortOrder = 34;

Becomes:

ItemX.SortOrder = 34;
ItemY.SortOrder = 26;
ItemZ.SortOrder = 5;

I think its because the results of my query aren’t ordered the way I am picturing them. Here is my query code. If anything else is needed, just let me know.

itemToSwitch = DataSource.Items.Where(item => item.SortOrder > currentItem.SortOrder).First();
int? next = itemToSwitch.SortOrder;
int? previous = currentItem.SortOrder;
currentItem.SortOrder = next;
itemToSwitch.SortOrder = previous;

Sorry if my question is difficult to read or jumbled. I’m trying to be as clear as possible.

Answer 1

I’m suspecting you actually want:

 var sorted = DataSource.Items.OrderBy(item => item.SortOrder);

If you’re reusing it, a .ToList() might help