unit15.~pas

数字电路故障诊断系统

unit Unit15;

interface

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

type
  Tquerylib = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Button1: TButton;
    Edit2: TEdit;
    DataSource1: TDataSource;
    Table1: TTable;
    DBGrid1: TDBGrid;
    Button2: TButton;
    Label2: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  querylib: Tquerylib;
    s: string;
    flag:boolean;
implementation

{$R *.dfm}

procedure Tquerylib.Button1Click(Sender: TObject);
begin
    s:=edit1.Text;
    flag:=table1.Locate('wire',s,[lopartialkey]);
    if flag=true then
    edit2.Text:=table1.Fields[2].AsString
   
    else
    edit2.Text:=('没有找到这条记录') ;
end;

procedure Tquerylib.Button2Click(Sender: TObject);
begin
    querylib.Close ;
end;

end.