Hi Manikanta Kiran,
I suppose that the ListBox is rebound after you have moved the items. Have you tried to move
radLstAvailable.DataSource = dataList;
inside the If(edit) conditional statement? I
I have tried to reproduce the fault in a sample project, unfortunately, no avail. I am attaching my sample project. Can you modify it in a way that reproduces the problem?
the Telerik team