/// <summary>
/// Returns the list items that match the specified criteria.
/// </summary>
/// <remarks>
/// The select criteria can be any expression that would be valid for the <seealso cref="Filter"/> property.
/// </remarks>
/// <param name="criteria">The criteria.</param>
/// <returns>The matching items. If no items match the critiera, an empty list is returned.</returns>
public IList Select(string criteria)
{
if (criteria == null)
throw new ArgumentNullException("criteria");
if (criteria == "")
throw new ArgumentException("criteria");
FilterNode expressionTree = FilterNode.Parse(criteria);
FilterEvaluator evaluator = new FilterEvaluator(expressionTree, this.itemProperties);
ArrayList matches = new ArrayList();
foreach (object item in this)
{
if (evaluator.Matches(item))
matches.Add(item);
}
return matches;
}
/// <summary>
/// Finds the index of the first list item matching the specified criteria.
/// </summary>
/// <remarks>
/// The find criteria can be any expression that would be valid for the <seealso cref="Filter"/> property.
/// </remarks>
/// <param name="criteria">The criteria.</param>
/// <returns>The index of the list item found, or -1 if not found.</returns>
public int Find(string criteria)
{
if (criteria == null)
throw new ArgumentNullException("criteria");
if (criteria == "")
throw new ArgumentException("criteria");
FilterNode expressionTree = FilterNode.Parse(criteria);
FilterEvaluator evaluator = new FilterEvaluator(expressionTree, this.itemProperties);
for (int i = 0; i < this.Count; i++)
{
if (evaluator.Matches(this[i]))
return i;
}
return -1;
}
