WPF ComboBox performance problems by binding a large collections

Question

I\'m trying to bind a large collection to a ComboBox and I faced performance problems when opening ComboBox\'s popup. I searched internet and found that using VirtualizingSt

Answer 1

According to this blog: http://vbcity.com/blogs/xtab/archive/2009/12/15/wpf-using-a-virtualizingstackpanel-to-improve-combobox-performance.aspx

I've tested it with this code:

It works fine for first time and next times. It's not necessary to code these lines:

I hope this helps you.