TdxCustomMemData.ProgrammedFilter Property

Specifies the active data filtering mode.

Declaration

delphi

property ProgrammedFilter: Boolean read; write;

Property Value

Type	Description
Boolean	`False` Default. You can handle the OnFilterRecord event to implement a custom data filtering algorithm.`True`You can use the FilterList property to populate the list of filtered dataset records based on custom criteria. The OnFilterRecord event does not occur in this mode.

Remarks

You can set the ProgrammedFilter property to True to populate the list of filtered records accessible through the FilterList property.

Code Example: Populate Filtered Record Lists

The following code example populates the list of filtered records accessible through the FilterList property:

Delphi
C++

delphi

var
  AGroupIDField: TField;
begin
  dxMemData1.ProgrammedFilter := True;
  AGroupIDField := dxMemData1.FieldByName('GroupID');
  while not dxMemData1.Eof do
  begin
    if AGroupIDField.AsInteger = 1 then
      dxMemData1.FilterList.Add(dxMemData1.RecNo);
    dxMemData1.Next;
  end;
  dxMemData1.Filtered := True;
end;

cpp

TField *AGroupIDField;
  // ...
  dxMemData1->ProgrammedFilter = true;
  AGroupIDField = dxMemData1->FieldByName("GroupID");
  do
  {
    if(AGroupIDField->AsInteger == 1)
      dxMemData1->FilterList->Add(dxMemData1->RecNo);
    dxMemData1->Next();
  } while(!dxMemData1->Eof);
  dxMemData1->Filtered = true;

Default Value

The ProgrammedFilter property’s default value is False.