DELPHI 查找，增加，修改，删除
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, Grids, DBGrids, DB, ADODB, StdCtrls;
type
TForm1 = class(TForm)
Edit1: TEdit;
Button1: TButton;
Button2: TButton;
Button3: TButton;
DataSource1: TDataSource;
ADOQuery1: TADOQuery;
DBGrid1: TDBGrid;
Button4: TButton;
procedure FormCreate(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
procedure DBGrid1CellClick(Column: TColumn);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
var
s:string;
begin
s:='select id,sj from fsjl';
form1.ADOQuery1.Close;
form1.ADOQuery1.Sql.Clear;
form1.ADOQuery1.SQL.Add(s);
form1.ADOQuery1.open;
end;
procedure TForm1.Button1Click(Sender: TObject); //add
var
s:string;
begin
s:='insert into fsjl (sj) values ('''+Edit1.Text+''')';
ADOQuery1.Close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.Text:=s;
ADOQuery1.ExecSQL;
Form1.ADOQuery1.Close;
Form1.ADOQuery1.SQL.Clear;
Form1.ADOQuery1.SQL.Add('select * from fsjl');
Form1.ADOQuery1.Open;
end;
procedure TForm1.Button2Click(Sender: TObject); //edit
var
s:string;
begin
s:='update fsjl set sj ='''+Edit1.Text+''' where id ='''+Form1.ADOQuery1.fieldbyname('id').asstring+'''';
ADOQuery1.Close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.Text:=s;
ADOQuery1.ExecSQL;
Form1.ADOQuery1.Close;
Form1.ADOQuery1.SQL.Clear;
Form1.ADOQuery1.SQL.Add('selec
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