/// <summary>
/// Adds a new item to the list.
/// </summary>
/// <returns></returns>
public object AddNew()
{
if (EntityType == null)
{
throw new ArgumentNullException("EntityType");
}
// original...
if (OriginalListAsIList == null)
{
throw new ArgumentNullException("OriginalListAsIList");
}
// create...
object newEntity = EntityType.CreateInstance();
int index = this.OriginalListAsIList.Add(newEntity);
// add it to the list...
this.Add(this.OriginalListAsIList[index]);
// return...
return(newEntity);
}