unit1.~pas

Delphi数据库编程

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, DB, DBTables, ExtCtrls, DBCtrls, Mask;

type
  TForm1 = class(TForm)
    Table1: TTable;
    DataSource1: TDataSource;
    Label1: TLabel;
    DBEdit1: TDBEdit;
    Label2: TLabel;
    DBEdit2: TDBEdit;
    Label3: TLabel;
    DBEdit3: TDBEdit;
    Label4: TLabel;
    DBEdit4: TDBEdit;
    GroupBox1: TGroupBox;
    Label5: TLabel;
    Edit1: TEdit;
    Button1: TButton;
    Button2: TButton;
    GroupBox2: TGroupBox;
    Label6: TLabel;
    Edit2: TEdit;
    Button3: TButton;
    Button4: TButton;
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
  var
     curdir:string;
begin
     getdir(0,curdir);
     table1.Active :=False;
     table1.DatabaseName :=curdir;
     table1.Open ;
 end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  Table1.IndexName :='XM';
  table1.SetKey ;
  Table1.FieldByName('姓名').AsString :=Edit1.Text ;
  if Table1.GotoKey then
        Showmessage('查找成功')
  else
        showmessage('没有符合条件的记录');

end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  Table1.IndexName :='XM';
  table1.SetKey ;
  Table1.FieldByName('姓名').AsString :=Edit1.Text ;
  Table1.GotoNearest  ;
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
  Table1.IndexName :='XM';
  if Table1.Findkey([Edit2.Text ]) then
        Showmessage('查找成功')
  else
        showmessage('没有符合条件的记录');
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
 Table1.IndexName :='XM';
 Table1.FindNearest([Edit2.Text ])
end;

end.