/// <summary>
/// Clear the list.
/// </summary>
public void Clear()
{
productsCollection.Clear();
ModificationEventArgs e = new ModificationEventArgs(ModificationEventStatus.successful, this);
OnCollectionModified(e);
}
public event CollectionModifiedHandler CollectionModified; //declares event
/// <summary>
/// Method that takes in a ModificationEventArgs arguments,
/// then raises the CollectionModified event.
/// </summary>
/// <param name="mea">ModificationEventArgs</param>
public void OnCollectionModified(ModificationEventArgs mea)
{
//if there is no listener then ignore.
if (CollectionModified != null)
{
CollectionModified(this, mea); //raises event
}
}
/// <summary>
/// Inserts into the collection an certain item at a certain index
/// </summary>
/// <param name="index">index</param>
/// <param name="item">Product</param>
public void Insert(int index, Product item)
{
if (!productsCollection.Contains(item))
{
productsCollection.Insert(index, item);
ModificationEventArgs e = new ModificationEventArgs(ModificationEventStatus.successful, this);
OnCollectionModified(e);
}
else
{
ModificationEventArgs e = new ModificationEventArgs(ModificationEventStatus.unsuccessful, this);
OnCollectionModified(e);
}
}
/// <summary>
/// Removes an item from the collection at specified index
/// </summary>
/// <param name="index">index</param>
public void RemoveAt(int index)
{
int count = productsCollection.Count;
productsCollection.RemoveAt(index);
if (count == productsCollection.Count)
{
ModificationEventArgs e = new ModificationEventArgs(ModificationEventStatus.successful, this);
OnCollectionModified(e);
}
else
{
ModificationEventArgs e = new ModificationEventArgs(ModificationEventStatus.unsuccessful, this);
OnCollectionModified(e);
}
}
/// <summary>
/// Removes an item from the productsCollection
/// </summary>
/// <param name="item">Product</param>
/// <returns>true = success or false = failure</returns>
public bool Remove(Product item)
{
if (productsCollection.Contains(item))
{
productsCollection.Remove(item);
ModificationEventArgs e = new ModificationEventArgs(ModificationEventStatus.successful, this);
OnCollectionModified(e);
return(true);
}
else
{
ModificationEventArgs e = new ModificationEventArgs(ModificationEventStatus.unsuccessful, this);
OnCollectionModified(e);
return(false);
}
}
/// <summary>
/// Get/set the index property in the collection
/// </summary>
/// <param name="index">index</param>
/// <returns>Product</returns>
public Product this[int index]
{
get
{
return(productsCollection[index]);
}
set
{
if (!productsCollection.Contains(value))
{
ModificationEventArgs e = new ModificationEventArgs(ModificationEventStatus.successful, this);
OnCollectionModified(e);
}
else
{
productsCollection[index] = value;
}
}
}
