/// <summary>
/// Adds an item to the <see cref="T:System.Collections.Generic.ICollection`1"></see>.
/// </summary>
/// <param name="item">The object to add to the <see cref="T:System.Collections.Generic.ICollection`1"></see>.</param>
/// <exception cref="T:System.NotSupportedException">The <see cref="T:System.Collections.Generic.ICollection`1"></see> is read-only.</exception>
public override void Add(T item)
{
using (WriteLock.Acquire())
{
if (!Contains(item))
{
base.Add(item);
}
}
}
/// <summary>
/// Adds all of the items in the source.
/// </summary>
/// <param name="source">The source.</param>
public void AddAll(IEnumerable <T> source)
{
List <T> tempList = new List <T>();
using (WriteLock.Acquire())
{
foreach (T item in source)
{
if (!Contains(item))
{
tempList.Add(item);
}
}
if (tempList.Count != 0)
{
AddRange(tempList);
}
}
}