zhi_zhe_cha1.pas

产品标签管理系统：delphi+sql实现了产品标签、包装箱麦的自动生成等功能

unit zhi_zhe_cha1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, DB, DBTables, StdCtrls, Grids, DBGrids;

type
  Tzhi_zhe_ch = class(TForm)
    GroupBox1: TGroupBox;
    GroupBox2: TGroupBox;
    GroupBox3: TGroupBox;
    DBGrid1: TDBGrid;
    Label1: TLabel;
    ComboBox1: TComboBox;
    Label2: TLabel;
    Edit1: TEdit;
    Query1: TQuery;
    DataSource1: TDataSource;
    StoredProc1: TStoredProc;
    DataSource2: TDataSource;
    DBGrid2: TDBGrid;
    Label3: TLabel;
    Label4: TLabel;
    ComboBox2: TComboBox;
    Edit2: TEdit;
    DBGrid3: TDBGrid;
    DataSource3: TDataSource;
    Query2: TQuery;
    Label5: TLabel;
    Label6: TLabel;
    Edit3: TEdit;
    DBGrid4: TDBGrid;
    DataSource4: TDataSource;
    StoredProc2: TStoredProc;
    Label7: TLabel;
    ComboBox3: TComboBox;
    StoredProc3: TStoredProc;
    DataSource5: TDataSource;
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure Edit1KeyPress(Sender: TObject; var Key: Char);
    procedure FormActivate(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure ComboBox1KeyPress(Sender: TObject; var Key: Char);
    procedure ComboBox2KeyPress(Sender: TObject; var Key: Char);
    procedure Edit2KeyPress(Sender: TObject; var Key: Char);
    procedure Edit3KeyPress(Sender: TObject; var Key: Char);
    procedure ComboBox3KeyPress(Sender: TObject; var Key: Char);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  zhi_zhe_ch: Tzhi_zhe_ch;

implementation

{$R *.dfm}

procedure Tzhi_zhe_ch.FormClose(Sender: TObject; var Action: TCloseAction);
begin
action:=cafree;
end;

procedure Tzhi_zhe_ch.Edit1KeyPress(Sender: TObject; var Key: Char);
begin
if key=chr(13) then
begin
case combobox1.ItemIndex of
0:
begin
query1.Active:=false;
query1.SQL.Clear;
query1.SQL.Add('select * from E  where Zdh=:hh');
query1.ParamByName('hh').AsString:=edit1.Text;
query1.Prepare;
query1.Active:=true;
end;
1:
begin
query1.Active:=false;
query1.SQL.Clear;
query1.SQL.Add('select * from E  where Ddh=:ll');
query1.ParamByName('ll').AsString:=edit1.Text;
query1.Prepare;
query1.Active:=true;
end;
2:
begin

StoredProc1.Active:=false;
StoredProc1.ParamByName('@dat1').AsString:=edit1.Text;
StoredProc1.Prepare;
StoredProc1.Active:=true;



end;
end;

if (combobox1.Text='') and (edit1.Text='') then
begin
query1.Active:=false;
query1.SQL.Clear;
query1.SQl.Add('select * from E ');
query1.Prepare;
query1.Active:=true;
end;
end;
end;
procedure Tzhi_zhe_ch.FormActivate(Sender: TObject);
begin
combobox1.SetFocus;
end;

procedure Tzhi_zhe_ch.FormCreate(Sender: TObject);
begin
combobox2.Text:='';
edit2.Text:='';
combobox1.Text:='';
edit1.Text:='';
DBGrid2.Visible:=false;
edit3.Text:='';
combobox3.Text:='';
edit3.Text:='';
end;

procedure Tzhi_zhe_ch.ComboBox1KeyPress(Sender: TObject; var Key: Char);
begin
if key=chr(13) then
edit1.SetFocus;
if combobox1.ItemIndex=2 then
 DBGrid2.Visible:=true
 else
DBGrid2.Visible:=false;
end;

procedure Tzhi_zhe_ch.ComboBox2KeyPress(Sender: TObject; var Key: Char);
begin
IF KEY=CHR(13) then
edit2.SetFocus;
end;

procedure Tzhi_zhe_ch.Edit2KeyPress(Sender: TObject; var Key: Char);
begin
if key=chr(13) then
begin
case combobox2.ItemIndex of
0:
begin
query2.Active:=false;
query2.SQL.Clear;
query2.SQL.Add('select * from EM  where Zdh=:pp');
query2.ParamByName('pp').AsString:=edit2.Text;
query2.Prepare;
query2.Active:=true;
end;
1:
begin
query2.Active:=false;
query2.SQL.Clear;
query2.SQL.Add('select * from EM  where Gxm=:uu');
query2.ParamByName('uu').AsString:=edit2.Text;
query2.Prepare;
query2.Active:=true;
end;
2:
begin
query2.Active:=false;
query2.SQL.Clear;
query2.SQL.Add('select * from EM  where Epartno=:ii');
query2.ParamByName('ii').AsString:=edit2.Text;
query2.Prepare;
query2.Active:=true;
end;

end;
if (combobox2.Text='') and (edit2.Text='') then
begin
query2.Active:=false;
query2.SQL.Clear;
query2.SQl.Add('select * from EM ');
query2.Prepare;
query2.Active:=true;
end;
end;
end;

procedure Tzhi_zhe_ch.Edit3KeyPress(Sender: TObject; var Key: Char);
begin
if key=chr(13) then
begin
if combobox3.ItemIndex=0 then
begin
StoredProc2.Active:=false;
StoredProc2.ParamByName('@datp').AsString:=edit3.Text;
StoredProc2.Prepare;
StoredProc2.Active:=true;
end;
if combobox3.ItemIndex=1 then
begin
StoredProc3.Active:=false;
StoredProc3.ParamByName('@datt').AsString:=edit3.Text;
StoredProc3.Prepare;
StoredProc3.Active:=true;
DBGrid4.DataSource:=DataSource5;
end;
end;

end;

procedure Tzhi_zhe_ch.ComboBox3KeyPress(Sender: TObject; var Key: Char);
begin
if key=chr(13) then
edit3.SetFocus;
end;

end.