bjclsc.pas

企业安防管理系统

unit bjclsc;

interface

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

type
  TForm15 = class(TForm)
    Panel2: TPanel;
    Label3: TLabel;
    Panel1: TPanel;
    Label1: TLabel;
    SpeedButton1: TSpeedButton;
    ComboBox1: TComboBox;
    DBGrid1: TDBGrid;
    DataSource1: TDataSource;
    Panel3: TPanel;
    BitBtn2: TBitBtn;
    BitBtn3: TBitBtn;
    procedure FormShow(Sender: TObject);
    procedure BitBtn2Click(Sender: TObject);
    procedure SpeedButton1Click(Sender: TObject);
    procedure ComboBox1KeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form15: TForm15;

implementation
  uses DataModal;
{$R *.dfm}

procedure TForm15.FormShow(Sender: TObject);
begin
  ComboBox1.Clear;
  DataSource1.DataSet := Nil;
  with Data.ADOQuery1 do
  begin
    Close;
    SQL.Clear;
    SQL.Add('select Distinct 报警处理 from 报警处理表');
    Open;
  end;
  if Data.ADOQuery1.RecordCount>0 then
  begin
    while Not Data.ADOQuery1.Eof do
    begin
      ComboBox1.Items.Add(Data.ADOQuery1.Fields[0].Value);
      Data.ADOQuery1.Next;
    end;
  end;
  ComboBox1.ItemIndex := 0;
end;

procedure TForm15.BitBtn2Click(Sender: TObject);
begin
  if Application.MessageBox('确实要删除当前数据吗?','提示',mb_YesNo)= ID_Yes then
  begin
    Try
      Data.ADOQuery2.Delete;
      Application.MessageBox('删除成功.','提示',64);
      OnShow(Sender);
    Except
      Application.MessageBox('系统出错.','提示',64);
    End;
  end;
end;

procedure TForm15.SpeedButton1Click(Sender: TObject);
begin
  if Trim(ComboBox1.Text)='' then
  begin
    Application.MessageBox('请设置查询条件.','提示',64);
    Exit;
  end;
  with Data.ADOQuery2 do
  begin
    Close;
    SQL.Clear;
    SQL.Add('select * from 报警处理表 where 报警处理 = :a');
    Parameters.ParamByName('a').Value := Trim(ComboBox1.Text);
    Open;
  end;
  if Data.ADOQuery2.RecordCount>0 then
  begin
    DataSource1.DataSet := Data.ADOQuery2;
    BitBtn2.Enabled := True;
    BitBtn2.SetFocus;
  end
  else
  begin
    DataSource1.DataSet := Nil;
    BitBtn2.Enabled := False;
  end;  
end;

procedure TForm15.ComboBox1KeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
  if (Key = vk_Return)and(Trim(ComboBox1.Text)<>'')then
    SpeedButton1.OnClick(Sender);
end;

end.