Thanks, I already tried this. The main problem is that if I don't click Enter, the Line number is 0. So what if user in e-mail client add 50 addresses, but he never click Enter, just use Space between two entries (I always do it in Outlook, not 50, but 10 addresses). Your control displays second line, but line number is still 0, since it is one row of text. Is there any other way ??
One more question, how to programaticaly add text in autocompletebox, but also add value, or change value when I add text ? If i try radAutoCompleteBox1.Items there is no Add option. And if I try to change Value in radAutoCompleteBox1_CreateTextBlock(object sender, Telerik.WinControls.UI.CreateTextBlockEventArgs e) Value property is ReadOnly. Do I miss something here, or there is no way to add value programaticaly ?