/// <summary>
/// Not supported.
/// </summary>
/// <param name="item">The object to locate in the <see cref="T:System.Collections.Generic.ICollection`1"/>.</param>
/// <returns>
/// Always false.
/// </returns>
public bool Contains(VirtualizingCollectionDataWrapper <T> item)
{
foreach (VirtualizingCollectionDataPage <T> page in _pages.Values)
{
if (page.Items.Contains(item))
{
return(true);
}
}
return(false);
}
/// <summary>
/// TODO
/// </summary>
/// <param name="item">The object to locate in the <see cref="T:System.Collections.Generic.IList`1"/>.</param>
/// <returns>
/// TODO
/// </returns>
public int IndexOf(VirtualizingCollectionDataWrapper <T> item)
{
foreach (KeyValuePair <int, VirtualizingCollectionDataPage <T> > keyValuePair in _pages)
{
int indexWithinPage = keyValuePair.Value.Items.IndexOf(item);
if (indexWithinPage != -1)
{
return(PageSize * keyValuePair.Key + indexWithinPage);
}
}
return(-1);
}
/// <summary>
/// Not supported.
/// </summary>
/// <param name="item">The object to remove from the <see cref="T:System.Collections.Generic.ICollection`1"/>.</param>
/// <returns>
/// true if <paramref name="item"/> was successfully removed from the <see cref="T:System.Collections.Generic.ICollection`1"/>; otherwise, false. This method also returns false if <paramref name="item"/> is not found in the original <see cref="T:System.Collections.Generic.ICollection`1"/>.
/// </returns>
/// <exception cref="T:System.NotSupportedException">
/// The <see cref="T:System.Collections.Generic.ICollection`1"/> is read-only.
/// </exception>
public bool Remove(VirtualizingCollectionDataWrapper <T> item)
{
throw new NotSupportedException();
}
/// <summary>
/// Not supported.
/// </summary>
/// <param name="index">The zero-based index at which <paramref name="item"/> should be inserted.</param>
/// <param name="item">The object to insert into the <see cref="T:System.Collections.Generic.IList`1"/>.</param>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="index"/> is not a valid index in the <see cref="T:System.Collections.Generic.IList`1"/>.
/// </exception>
/// <exception cref="T:System.NotSupportedException">
/// The <see cref="T:System.Collections.Generic.IList`1"/> is read-only.
/// </exception>
public void Insert(int index, VirtualizingCollectionDataWrapper <T> item)
{
throw new NotSupportedException();
}
/// <summary>
/// Not supported.
/// </summary>
/// <param name="item">The object to add to the <see cref="T:System.Collections.Generic.ICollection`1"/>.</param>
/// <exception cref="T:System.NotSupportedException">
/// The <see cref="T:System.Collections.Generic.ICollection`1"/> is read-only.
/// </exception>
public void Add(VirtualizingCollectionDataWrapper <T> item)
{
throw new NotSupportedException();
}