public void ColumnHeaderCollection_RemoveAt_HasHandle_Success()
{
var listView = new ListView();
var collection = new ListView.ColumnHeaderCollection(listView);
var header = new ColumnHeader();
collection.Add(header);
collection.Add(new ColumnHeader());
collection.Add(new ColumnHeader());
collection.Add(new ColumnHeader());
Assert.NotEqual(IntPtr.Zero, listView.Handle);
// Remove from start.
collection.RemoveAt(0);
Assert.Equal(3, collection.Count);
Assert.Equal(0, collection[0].DisplayIndex);
Assert.Equal(1, collection[1].DisplayIndex);
Assert.Equal(2, collection[2].DisplayIndex);
// Remove from middle.
collection.RemoveAt(1);
Assert.Equal(2, collection.Count);
Assert.Equal(0, collection[0].DisplayIndex);
Assert.Equal(1, collection[1].DisplayIndex);
// Remove from end.
collection.RemoveAt(1);
Assert.Single(collection);
Assert.Equal(0, collection[0].DisplayIndex);
// Remove only.
collection.RemoveAt(0);
Assert.Empty(collection);
Assert.Null(header.ListView);
}
ColumnHeaderEx IList <ColumnHeaderEx> .this[int index]
{
get { return(this[index]); }
set
{
if (index >= list.Count)
{
throw new IndexOutOfRangeException();
}
list.RemoveAt(index);
list.Insert(index, value);
}
}
public void ColumnHeaderCollection_RemoveAt_InvalidIndexEmpty_ThrowsArgumentOutOfRangeException(int index)
{
var listView = new ListView();
var collection = new ListView.ColumnHeaderCollection(listView);
Assert.Throws <ArgumentOutOfRangeException>("index", () => collection.RemoveAt(index));
}
