//
// Summary:
// Sorts the list based on a System.ComponentModel.PropertyDescriptor and a
// System.ComponentModel.ListSortDirection.
//
// Parameters:
// property:
// The System.ComponentModel.PropertyDescriptor to sort by.
//
// direction:
// One of the System.ComponentModel.ListSortDirection values.
//
// Exceptions:
// System.NotSupportedException:
// System.ComponentModel.IBindingList.SupportsSorting is false.
public virtual void ApplySort(PropertyDescriptor property, ListSortDirection direction)
{
//Flip the properties if the parameters are the same
if ((m_SortProperty == property) && (m_SortDirection == direction))
{
direction = (direction == ListSortDirection.Ascending) ?
ListSortDirection.Descending : ListSortDirection.Ascending;
}
// Apply and set the sort, if items to sort
PropertyComparerHelper <T> pc = new PropertyComparerHelper <T>(property, direction);
if (SortStarted != null)
{
SortStarted(this, null);
}
try
{
Sort(pc);
m_SortProperty = property;
m_SortDirection = direction;
}
finally
{
if (SortFinished != null)
{
SortFinished(this, null);
}
}
}
/// <summary>
/// Sorts implemented type by specified property
/// </summary>
/// <param name="propertyName"></param>
/// <param name="ascending"></param>
public void Sort(string propertyName, bool ascending)
{
//Flip the properties if the parameters are the same
if (_propertyName == propertyName && _ascending == ascending)
{
_ascending = !ascending;
}
else //Else, new properties are set with the new values
{
_propertyName = propertyName;
_ascending = ascending;
}
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(typeof(T));
PropertyDescriptor propertyDesc = properties.Find(propertyName, true);
// Apply and set the sort, if items to sort
PropertyComparerHelper <T> pc =
new PropertyComparerHelper <T>(propertyDesc,
(_ascending) ? ListSortDirection.Ascending : ListSortDirection.Descending);
Sort(pc);
}
