spzl_dw_find_unit.pas

这是我照着书做的一个销售管理系统,内容不难,很简单,但是对于我这个菜鸟来说已经很不错了

unit spzl_dw_find_unit;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ComCtrls, Grids, DBGrids, StdCtrls, Buttons;

type
  Tspzl_dw_find_form = class(TForm)
    GroupBox1: TGroupBox;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    SpeedButton1: TSpeedButton;
    SpeedButton2: TSpeedButton;
    SpeedButton3: TSpeedButton;
    ComboBox1: TComboBox;
    ComboBox2: TComboBox;
    Edit1: TEdit;
    DBGrid1: TDBGrid;
    StatusBar1: TStatusBar;
    procedure FormCreate(Sender: TObject);
    procedure SpeedButton1Click(Sender: TObject);
    procedure SpeedButton2Click(Sender: TObject);
    procedure SpeedButton3Click(Sender: TObject);
    procedure DBGrid1DblClick(Sender: TObject);
    procedure Edit1KeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  spzl_dw_find_form: Tspzl_dw_find_form;

implementation

uses dw_unit, data_unit, spzl_unit;

{$R *.dfm}

procedure Tspzl_dw_find_form.FormCreate(Sender: TObject);
begin
self.Top :=80;
self.Left :=40;
self.ClientHeight :=450;
self.ClientWidth :=720;
with database do
begin
adoq1.Connection :=adoc;
adoq1.SQL.Clear ;
adoq1.SQL.Add('select * from jldw ');
adoq1.active:=true;
statusbar1.Panels[1].Text :=inttostr(adoq1.Recordset.RecordCount);
datas1.DataSet :=adoq1;
dbgrid1.DataSource:=datas1;
end;

end;

procedure Tspzl_dw_find_form.SpeedButton1Click(Sender: TObject);
begin
with database do
begin
adoq3.Connection :=adoc;
adoq3.SQL.Clear;
case combobox1.ItemIndex of   //combobox1开始
   0:begin     //combobox1(0)开始
     case combobox2.ItemIndex of //combobox2开始
      0:begin  //combobox2(0)开始
            adoq3.SQL.Add('select * from jldw where 单位编码=:spbm');
            adoq3.Parameters.ParamByName('spbm').Value :=edit1.Text;
         end;
       1:begin   //combobox2(1)开始
          adoq3.SQL.Add('select * from jldw where 单位编码 like :spbm2');
          adoq3.Parameters.ParamByName('spbm2').Value :=edit1.Text+'%';
         end;
       end;  //combobox2(0)结束
   end;     //combobox1(0)结束
  1:begin   //combobox1(1)开始
     case combobox2.ItemIndex of
      0:begin
            adoq3.SQL.Add('select * from jldw where 计量单位=:mc');
            adoq3.Parameters.ParamByName('mc').Value :=edit1.Text;
         end;
       1:
         begin
          adoq3.SQL.Add('select * from jldw where 计量单位 like :mc2');
          adoq3.Parameters.ParamByName('mc2').Value :=edit1.Text+'%';
         end;
       end;
   end;
  2:
 begin
     case combobox2.ItemIndex of
      0:
        begin
            adoq3.SQL.Add('select * from jldw where 说明=:jm');
            adoq3.Parameters.ParamByName('jm').Value :=edit1.Text;
         end;
       1:
         begin
          adoq3.SQL.Add('select * from jldw where 说明 like :jm2');
          adoq3.Parameters.ParamByName('jm2').Value :=edit1.Text+'%';
         end;
       end;
   end
else
    begin
     adoq3.SQL.Clear ;
     adoq3.SQL.Add('select * from jldw order by 单位编码');
  end;
end;
adoq3.Active :=true;
if adoq3.Recordset.RecordCount >0 then
begin
datas2.DataSet :=nil;
datas2.DataSet :=adoq3;
dbgrid1.DataSource :=datas2;
//self.Hide ;
//spzl_form.DBGrid1.DataSource:=datas2;
//spzl_form.statusbar1.Panels[1].Text :=inttostr(adoq3.Recordset.RecordCount);
end
else
begin
showmessage('无此记录!');
end;
end;

end;

procedure Tspzl_dw_find_form.SpeedButton2Click(Sender: TObject);
begin
close;
end;

procedure Tspzl_dw_find_form.SpeedButton3Click(Sender: TObject);
begin
dw_form:=Tdw_form.create(application);
dw_form.show;
end;

procedure Tspzl_dw_find_form.DBGrid1DblClick(Sender: TObject);
begin
if dbgrid1.DataSource.DataSet.RecordCount>0 then
begin
spzl_form.Edit8.Text:=dbgrid1.DataSource.DataSet.FieldValues['计量单位'];
spzl_form.Edit9.SetFocus ;
dbgrid1.DataSource.DataSet :=nil;
self.Hide ;
end
else
showmessage('无此记录!');

end;

procedure Tspzl_dw_find_form.Edit1KeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
if key=vk_return then
speedbutton1click(nil);
end;

end.