public override object GetGroupValue(object Row)
{
var val = Grouper.GetGroupValue(Row);
if (val == null)
{
return(null);
}
var s = val.ToString();
if (s.Length < Letters)
{
return(s);
}
return(s.Substring(0, Letters));
}
private void set()
{
Groups = null;
GroupingInfo gi = Owner.groupon;
if (gi == null)
{
Rows = Owner.List;
return;
}
if (Owner.GroupSortDirection == SortOrder.None)
{
Groups = new Dictionary <object, GroupRow>();
}
else
{
GenericComparer <object> comparer = new GenericComparer <object>();
comparer.Descending = Owner.GroupSortDirection == SortOrder.Descending;
Groups = new SortedDictionary <object, GroupRow>(comparer);
}
foreach (object row in Owner)
{
object key = gi.GetGroupValue(row);
GroupRow gr;
if (!Groups.TryGetValue(key, out gr))
{
gr = new GroupRow();
gr.Value = key;
Groups.Add(key, gr);
}
gr.List.Add(row);
}
//var groups = Owner.Cast<object>().GroupBy<object, object>(o => gr.GetGroupValue(o));
int i = 0;
Rows = new List <object>(Groups.Count + Owner.BaseCount);
foreach (GroupRow g in Groups.Values)
{
g.Finalize(i++);
Rows.Add(g);
foreach (object row in g.Rows)
{
Rows.Add(row);
}
}
}