public int Compare(TreeNode x, TreeNode y, SortColumnDescription sortDescription)
{
int c = 0;
IComparable xc = null;
IComparable yc = null;
#if WPF
PropertyDescriptorCollection descriptor1 = TypeDescriptor.GetProperties(x.Item.GetType());
#else
PropertyInfoCollection descriptor1 = new PropertyInfoCollection(x.Item.GetType());
#endif
xc = descriptor1.GetValue(x.Item, sortDescription.ColumnName) as IComparable;
#if WPF
PropertyDescriptorCollection descriptor2 = TypeDescriptor.GetProperties(y.Item.GetType());
#else
PropertyInfoCollection descriptor2 = new PropertyInfoCollection(y.Item.GetType());
#endif
yc = descriptor1.GetValue(y.Item, sortDescription.ColumnName) as IComparable;
if (xc != null)
{
c = xc.CompareTo(yc);
}
else if (yc != null)
{
c = -1;
}
if (sortDescription.SortDirection == ListSortDirection.Descending)
{
c = -c;
}
return(c);
}
internal void GetGroupResult(object ItemData)
{
var descriptor = ListView.DataSource.GroupDescriptors[0];
object key;
if (descriptor.KeySelector == null)
{
var propertyInfoCollection = new PropertyInfoCollection(ItemData.GetType());
key = propertyInfoCollection.GetValue(ItemData, descriptor.PropertyName);
}
else
{
key = descriptor.KeySelector(ItemData);
}
for (int i = 0; i < this.ListView.DataSource.Groups.Count; i++)
{
var group = this.ListView.DataSource.Groups[i];
if ((group.Key != null && group.Key.Equals(key)) || group.Key == key)
{
itemGroup = group;
break;
}
group = null;
}
descriptor = null;
key = null;
}
private void ListView_SelectionChanging(object sender, ItemSelectionChangingEventArgs e)
{
GroupResult actualGroup = null;
object key = null;
var selectedItems = listView.SelectedItems;
//To Cancel the Deselection
if (e.RemovedItems.Count > 0 && selectedItems.Contains(e.RemovedItems[0]))
{
e.Cancel = true;
return;
}
//To return when SelectedItems is zero
if (e.AddedItems.Count <= 0)
{
return;
}
var itemData = (e.AddedItems[0] as Contacts);
var descriptor = listView.DataSource.GroupDescriptors[0];
if (descriptor.KeySelector == null)
{
var pbCollection = new PropertyInfoCollection(itemData.GetType());
key = pbCollection.GetValue(itemData, descriptor.PropertyName);
}
else
{
key = descriptor.KeySelector(itemData);
}
for (int i = 0; i < listView.DataSource.Groups.Count; i++)
{
var group = listView.DataSource.Groups[i];
if ((group.Key != null && group.Key.Equals(key)) || group.Key == key)
{
actualGroup = group;
break;
}
}
if (selectedItems.Count > 0)
{
foreach (var item in actualGroup.Items)
{
var groupItem = item;
if (selectedItems.Contains(groupItem))
{
listView.SelectedItems.Remove(groupItem);
break;
}
}
}
}
/// <summary>
/// Gets the value for the specific property.
/// </summary>
/// <param name="data">The data.</param>
/// <param name="property">the property whose value needs to return.</param>
/// <returns>value.</returns>
internal static object GetValue(object data, string propertyName)
{
if (DynamicHelper.CheckIsDynamicObject(data.GetType()))
{
return(new DynamicHelper().GetValue(data, propertyName));
//return DynamicPropertiesProvider.GetDynamicValue(data, propertyName);
}
else
{
#if WPF
PropertyDescriptorCollection descriptor = TypeDescriptor.GetProperties(data.GetType());
#else
PropertyInfoCollection descriptor = new PropertyInfoCollection(data.GetType());
#endif
return(descriptor.GetValue(data, propertyName));
}
}
