private void lvButtons_TextBlock_Drop(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent("WPFDragDrop.Model.ItemModel"))
{
var data = e.Data.GetData("WPFDragDrop.Model.ItemModel");
var itemData = (ItemModel)data;
CategoryModel category = (CategoryModel)(((TextBlock)sender).DataContext);
//If same category and have not been added already, show Copy, otherwise show "block".
if (category.MatchesAll || category.Matches.Contains(itemData.GroupName))
{
category.Drop(itemData);
e.Handled = true;
this.BottomHoverText.Text = "";
dragSource = null;
}
else
{
e.Effects = DragDropEffects.None;
e.Handled = true;
dragSource = null;
}
}
}