void CalculateTotal()
{
total = 0;
if (group.Details is RecordsDetails)
{
foreach (Record r in group.Records)
{
object obj = r.GetValue(field);
if (obj != null && !(obj is DBNull))
{
double d = Convert.ToDouble(obj);
total += d;
}
}
}
else
{
foreach (Group g in group.Groups)
{
IManualTotalSummaryArraySource tsa = g as IManualTotalSummaryArraySource;
ManualTotalSummary mt = tsa.GetManualTotalSummaryArray()[this.FieldIndex];
if (mt == null)
{
mt = new ManualTotalSummary(g, field);
}
double d = mt.Total;
total += d;
}
}
}
protected override void OnPrepareItemAdded(object row)
{
// Get new values for which delta information is needed
IManualTotalSummaryArraySource tsa = this.TopLevelGroup as IManualTotalSummaryArraySource;
if (tsa != null)
{
TableDescriptor td = TableDescriptor;
foreach (string name in this.totalSummaries)
{
FieldDescriptor fd = td.Fields[name];
if (fd.IsPropertyField())
{
PropertyDescriptor pd = fd.GetPropertyDescriptor();
object value = GetValue(row, pd);
ChangedFieldInfo ci = new ChangedFieldInfo(td, pd.Name, null, value);
this.AddChangedField(ci);
}
}
}
base.OnPrepareItemAdded(row);
}
protected override void OnPrepareRemoving(object row)
{
// Save values for all fields where we need to be able to access the
// old value (e.g. Delta for TotalSummaries).
TableDescriptor td = TableDescriptor;
IManualTotalSummaryArraySource tsa = this.TopLevelGroup as IManualTotalSummaryArraySource;
if (tsa != null)
{
foreach (string name in this.totalSummaries)
{
FieldDescriptor fd = td.Fields[name];
if (fd.IsPropertyField())
{
PropertyDescriptor pd = fd.GetPropertyDescriptor();
object value = GetValue(row, pd);
ChangedFieldInfo ci = new ChangedFieldInfo(td, pd.Name, value, null);
this.AddChangedField(ci);
}
}
}
base.OnPrepareRemoving(row);
}
protected override void OnRecordChanged(Element r, bool isObsoleteRecord, bool isAddedRecord)
{
TableDescriptor td = TableDescriptor;
Group g = r.ParentGroup;
while (g is IManualTotalSummaryArraySource)
{
OnGroupSummaryInvalidated(new GroupEventArgs(g));
IManualTotalSummaryArraySource tsa = g as IManualTotalSummaryArraySource;
foreach (ChangedFieldInfo ci in this.ChangedFieldsArray)
{
ManualTotalSummary mt = tsa.GetManualTotalSummaryArray()[ci.FieldIndex];
if (mt != null)
{
mt.ApplyDelta(r, isObsoleteRecord, isAddedRecord, ci);
}
}
g = g.ParentGroup;
}
} // Fix ManualTotalSummary of parent groups.
