How to speed adding items to a ListView?

Question

i\'m adding a few thousand (e.g. 53,709) items to a WinForms ListView.

Attempt 1: 13,870 ms

foreach (Object o in list)
         


        

Answer 1

ListView Box Add

This is simple code I was able to construct to add Items to a listbox that consist of columns. The first column is item while the second column is price. The code below prints Item Cinnamon in first column and 0.50 in the second column.

// How to add ItemName and Item Price
listItems.Items.Add("Cinnamon").SubItems.Add("0.50");

No instantiation needed.