unit13.pas

如何为 教师和学生准备方便易查的学习资源是课程编制面临的新的巨大的课题。在教学资源的选取上

unit Unit13;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs,unit7,unit1, StdCtrls, Grids, DBGrids, ExtCtrls;

type
  TForm13 = class(TForm)
    Panel1: TPanel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Label7: TLabel;
    ComboBox3: TComboBox;
    ComboBox4: TComboBox;
    ComboBox5: TComboBox;
    ComboBox6: TComboBox;
    ComboBox7: TComboBox;
    Button1: TButton;
    Button2: TButton;
    Edit1: TEdit;
    procedure ComboBox4Change(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form13: TForm13;

implementation

uses Unit6;

{$R *.dfm}

procedure TForm13.ComboBox4Change(Sender: TObject);
var
search:string;
begin
    search:=trim(combobox4.Text);
    datamodule7.ADOQuery1.Close;
    datamodule7.ADOQuery1.SQL.Clear;
    datamodule7.ADOQuery1.SQL.Add('select 系名 from sys where 院名='''+search+'''');
    datamodule7.ADOQuery1.Prepared;
    datamodule7.ADOQuery1.Open;
    while not datamodule7.ADOQuery1.Eof do
    begin
        search:=datamodule7.ADOQuery1.FieldValues['系名'];
        combobox5.Items.Add(search);     //注意！1！！！！！！！！！！！
        datamodule7.ADOQuery1.Next;
    end
end;

procedure TForm13.Button1Click(Sender: TObject);
var
  str: String;
begin
try
datamodule7.ADOConnection1.BeginTrans;
datamodule7.ADOQuery1.Close;
datamodule7.ADOQuery1.SQL.Clear;
str := 'update student set 学生名 = ''' + Edit1.Text + ''',班级='''+combobox3.text+''',系别='''+combobox4.text+''',专业='''+combobox5.text+''',学年='''+combobox6.text+''',学生类别='''+combobox7.text+'''' + ' where 学生号 = ''' + Form1.Edit1.Text +'''';
//showmessage(str);
datamodule7.ADOQuery1.SQL.Add(str);
//datamodule7.ADOQuery1.Parameters.ParamByName('教师名').Value := edit1.Text;
datamodule7.ADOQuery1.ExecSQL;
showmessage('修改成功!');
datamodule7.ADOConnection1.CommitTrans;
except
showmessage('修改失败!');
datamodule7.ADOConnection1.RollbackTrans;
end;
edit1.Text:='';

end;

procedure TForm13.Button2Click(Sender: TObject);
begin
form6.show;
form13.Close;
end;

end.