Question

I have an arraylist which contain objects of my own class. I want to fetch the object from the array list which has the index = selectedindex of listview.

I tried this :

TrackInformation t=(TrackInformation) SongList[listView1.SelectedIndices[0]];

TrackInformation is my class and SongList is an ArrayList of type TrackInformation.

listview1 does not allow multiple indices selection so I want the first element of the SelectedIndices collection.

I am getting ArgumentOutOfRangeException and it says value of ‘0’ is not valid for ‘index’.

Answer 1

The ListView.SelectedIndexChanged event has a quirk that bombs your code. When you start your program, no item is selected. Click an item and SelectedIndexChanged fires, no problem. Now click another item and the event fires twice. First to let you know, unhelpfully, that the first item is unselected. Then again to tell you that the new item is selected. That first event is going to make you index an empty array, kaboom. RV1987’s snippet prevents this.