protected object Calculate(DataGridAggregate <TItem> aggregate, DataGridColumn <TItem> column)
{
switch (aggregate.Aggregate)
{
case DataGridAggregateType.Sum:
return(SumOf(column));
case DataGridAggregateType.Average:
return(AverageOf(column));
case DataGridAggregateType.Min:
return(MinOf(column));
case DataGridAggregateType.Max:
return(MaxOf(column));
case DataGridAggregateType.Count:
return(CountOf(column));
case DataGridAggregateType.TrueCount:
return(TrueCountOf(column));
case DataGridAggregateType.FalseCount:
return(FalseCountOf(column));
default:
return(null);
}
}
/// <summary>
/// Links the child column with this datagrid.
/// </summary>
/// <param name="column">Column to link with this datagrid.</param>
internal void Hook(DataGridAggregate <TItem> aggregate)
{
Aggregates.Add(aggregate);
}
protected object Calculate(DataGridAggregate <TItem> aggregate, DataGridColumn <TItem> column) => aggregate?.AggregationFunction?.Invoke(Data, column);