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| unit DBGridKeyInc_ADO_MainForm;
interface
uses
(*Winapi.*)Windows, (*Winapi.*)Messages, (*System.*)SysUtils, (*System.*)Variants, (*System.*)Classes, (*Vcl.*)Graphics,
(*Vcl.*)Controls, (*Vcl.*)Forms, (*Vcl.*)Dialogs, (*Data.*)DB, (*Vcl.*)ExtCtrls, (*Vcl.*)DBCtrls,
(*Vcl.*)Grids, (*Vcl.*)DBGrids, (*Datasnap.*)DBClient, (*Vcl.*)StdCtrls,
Vcl.Buttons, (*Data.Win.*)ADODB;
type
TDBGridKeyIncADOMainForm = class(TForm)
DBGrid: TDBGrid;
pnlMisc: TPanel;
edTotal: TLabeledEdit;
DBNavigator: TDBNavigator;
DataSource: TDataSource;
ADOQuery: TADOQuery;
pnlTop: TPanel;
edUser: TEdit;
edPassword: TEdit;
edServerName: TEdit;
edDataBaseName: TEdit;
procedure FormCreate(Sender: TObject);
procedure ADOQueryCalcFields(DataSet: TDataSet);
procedure DBGridKeyPress(Sender: TObject; var Key: Char);
procedure ADOQueryAfterPost(DataSet: TDataSet);
private
{ Déclarations privées }
public
{ Déclarations publiques }
end;
implementation
{$R *.dfm}
procedure TDBGridKeyIncADOMainForm.FormCreate(Sender: TObject);
begin
with TIntegerField.Create(ADOQuery)do
begin
FieldName := 'Code';
FieldKind := fkData;
DataSet := ADOQuery;
end;
with TStringField.Create(ADOQuery)do
begin
FieldName := 'Reference';
FieldKind := fkData;
Size := 10;
DataSet := ADOQuery;
end;
with TStringField.Create(ADOQuery)do
begin
FieldName := 'Produit';
FieldKind := fkData;
Size := 50;
DataSet := ADOQuery;
end;
with TIntegerField.Create(ADOQuery)do
begin
FieldName := 'Qte';
FieldKind := fkData;
DataSet := ADOQuery;
end;
with TFloatField.Create(ADOQuery)do
begin
FieldName := 'PU';
FieldKind := fkData;
DataSet := ADOQuery;
end;
with TFloatField.Create(ADOQuery) do
begin
FieldName := 'Total';
FieldKind := fkCalculated;
DataSet := ADOQuery;
ReadOnly := True;
end;
ADOQuery.ConnectionString := Format('Provider=%s;Persist Security Info=False;Data Source=%s;Initial Catalog=%s;User ID=%s;Password=%s', ['SQLNCLI11.1', edServerName.Text, edDataBaseName.Text, edUser.Text, edPassword.Text]);
ADOQuery.SQL.Text := 'SELECT Code ,Reference ,Produit ,Qte ,PU FROM AAA_SLT_07 WHERE CMD = 0';
ADOQuery.Open();
end;
procedure TDBGridKeyIncADOMainForm.ADOQueryCalcFields(DataSet: TDataSet);
var
Total: TField;
begin
Total := DataSet.FieldByName('Total');
Total.ReadOnly := False;
try
if not DataSet.FieldByName('PU').IsNull and not DataSet.FieldByName('Qte').IsNull then
Total.AsFloat := DataSet.FieldByName('PU').AsFloat * DataSet.FieldByName('Qte').AsInteger
else
Total.Clear();
finally
Total.ReadOnly := True;
end;
end;
procedure TDBGridKeyIncADOMainForm.DBGridKeyPress(Sender: TObject; var Key: Char);
var
DataSet: TDataSet;
Qte: TField;
begin
if (Key = '+') or (Key = '-') then
begin
// A voir si le caractère + iou - peuvent être dans une référence, donc prévoir de limiter selon la colonne active
//if DBGrid.SelectedField.FieldName = 'Qte' then
begin
DataSet := DBGrid.DataSource.DataSet;
Qte := DataSet.FieldByName('Qte');
// Dans le cas de cette modification sans avoir écrit le moindre caractère sur la ligne, le AutoEdit du TDataSource ne fait pas effet
if not (DataSet.State in [dsEdit, dsInsert]) then
DataSet.Edit();
Qte.AsInteger := Qte.AsInteger + 44 - Ord(Key);
ADOQueryCalcFields(DBGrid.DataSource.DataSet);
Key := #0;
end;
end;
end;
procedure TDBGridKeyIncADOMainForm.ADOQueryAfterPost(DataSet: TDataSet);
var
mark: TBookmark;
Total: Double;
PU, Qte: TField;
begin
edTotal.Text := '';
with DataSet do
begin
PU := FieldByName('PU');
Qte := FieldByName('Qte');
DisableControls();
try
mark := GetBookmark();
try
Total := 0;
First();
while not Eof do
begin
Total := Total + PU.AsFloat * Qte.AsInteger;
Next();
end;
edTotal.Text := FloatToStr(Total);
finally
GotoBookmark(mark);
end;
finally
EnableControls();
end;
end;
end;
end. |
