Иллюстрированный самоучитель по Delphi 7 для профессионалов

Пример приложения ADO

procedure TfmMain.sbDefDBClick(Sender: TObject);
begin if SelectDirectory(DefDBStr, [], 0)
then edDefDB.Text: = DefDBStr;
end;
procedure TfmMain.tbConnectClick(Sender: TObject);
begin
ADOConn.Close;
ADOConn.DefaultDatabase: = ''; if DefDBStr = '' then
begin
MessageDlg(sEmptyDefDB, mtError, [mbOK], 0);
Abort;
end
else
begin
ADOConn.DefaultDatabase: = DefDBStr;
ADOConn.Open;
end;
end;
procedure TfmMain.tbSaveClick(Sender: TObject);
begin
tbllndustry.UpdateBatch();
end;
procedure TfmMain.tbFilterClick(Sender: TObject);
var i: Integer;
begin
if dbglndustry.SelectedRows.Count > 0 then
begin
SetLength(Bookmarks, dbglndustry.SelectedRows.Count);
for i: = 0 to dbglndustry.SelectedRows.Count – 1 do
begin
Bookmarks[i].VType: = vtPointer;
Bookmarks[i].VPointer: = pointer(dbglndustry.SelectedRows[i]);
end;
tbllndustry.FilterOnBookmarks(Bookmarks);
end else
MessageDlgtsEmptyFilter, mtWarning, [mbOK], 0);
end;
procedure TfmMain.tbUnFilterClick(Sender: TObject);
begin
tbllndustry.Filtered: = False;
dbglndustry.SelectedRows.Clear;
end;
procedure TfmMain.dbglndustryTitleClick(Column: TColumn);
begin if tbllndustry.Active then
if (Pos(Column.FieldName, tbllndustry.Sort) > 0
}and(Pos('ASC', tbllndustry.Sort) > 0)
then tbllndustry.Sort: = Column.FieldName + ' DESC' else tbllndustry.Sort
: = Column.FieldName + ' ASC';
end;
procedure TfmMain.ADOConnAfterConnect(Sender: TObject);
var i: Integer;
begin
for i: = 0 to adoConn.DataSetCount – 1 do ADOConn.DataSets [i].Open/end;
procedure TfmMain.ADOConnBeforeDisconnect(Sender: TObject);
var i: Integer;
begin
for i: = 0 to adoConn.DataSetCount – 1 do ADOConn.DataSets[i].Close;
end;
end.