The first step is to get a reference to the ExplorerListViewControl. I think you named your ExpIorerListView ‘btsch_num_new2’. You can use the FindControl method and pass the name of the control to find it:
exp = .FindControl(‘btsch_num_new2’)
Then you’ll need to use the GetView method to get the data from the current listview record:
data = exp.GetView().Get()