protected internal override object GetValue(DataSet dataSet, VirtualRow virtualRow)
{
List<VirtualRow> groupedRows = virtualRow.GetGroupedRows();
int count = 0;
foreach (VirtualRow row in groupedRows)
{
object value = row.GetColumnValue(_column);
if (DataType.IsNotNull(value))
{
++count;
}
}
return count;
}
protected internal override object GetValue(DataSet dataSet, VirtualRow virtualRow)
{
List<VirtualRow> groupedRows = virtualRow.GetGroupedRows();
DateTime max = DateTime.MinValue;
foreach (VirtualRow row in groupedRows)
{
object value = row.GetColumnValue(_column);
if (DataType.IsNotNull(value))
{
DateTime dateTimeValue = (DateTime)value;
max = (dateTimeValue > max) ? dateTimeValue : max;
}
}
return max;
}
protected internal override object GetValue(DataSet dataSet, VirtualRow virtualRow)
{
List<VirtualRow> groupedRows = virtualRow.GetGroupedRows();
return groupedRows.Count;
}