unit8.~pas

用delphi写的课堂作业

unit Unit8;

interface

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

type
  TFrame8 = class(TFrame)
    DBGrid1: TDBGrid;
    Button1: TButton;
    Button2: TButton;
    ADOQuery1: TADOQuery;
    DataSource1: TDataSource;
    Edit1: TEdit;
    Button3: TButton;
    Label1: TLabel;
    Button4: TButton;
    DBEdit1: TDBEdit;
    DBEdit2: TDBEdit;
    DBEdit3: TDBEdit;
    DBEdit4: TDBEdit;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

implementation

{$R *.dfm}

procedure TFrame8.Button1Click(Sender: TObject);
begin
dbgrid1.ReadOnly:=false;
dbgrid1.Color:=clWhite;
adoquery1.Edit;
end;

procedure TFrame8.Button2Click(Sender: TObject);
begin
dbgrid1.Color:=clInfoBk;
dbgrid1.ReadOnly:=true;
//adoquery1.Post;
end;

procedure TFrame8.Button3Click(Sender: TObject);
var
tiaojian:string;
begin
  if Edit1.Text<>'' then
  begin
    tiaojian := 'select * from student where sname like "%' + Edit1.Text + '%" or number like "%'+Edit1.Text+'%"or grade like "%'+Edit1.Text+'%" or sex like "%'+Edit1.Text+'%"';
    ADOQuery1.Close;
    ADOQuery1.SQL.Clear;
    ADOQuery1.SQL.Add(tiaojian);
    ADOQuery1.Open;
  end
  else
    messagebox(handle,'请输入查询条件！','检查输入',mb_iconwarning+mb_ok)
end;

procedure TFrame8.Button4Click(Sender: TObject);
var
Qm:integer;
Pm:string;
begin
   adoquery1.Edit;
   //Qm:=adoquery1.FieldByName('truancy,late,leave,qingjia').AsInteger;
   //dbedit1.text:='';
   //dbedit2.text:='';
   //dbedit3.text:='';
   //dbedit4.text:='';
   Qm:=0;
   Pm:=inttostr(Qm);
   dbedit1.Text:=Pm;
   dbedit2.Text:=Pm;
   dbedit3.Text:=Pm;
   dbedit4.Text:=Pm;
   adoquery1.Post;
   adoquery1.Next;
  //adoquery1.SQL.Add('updata student set truancy=0,late=0,leave=0,qingjia')
end;

end.