bycpunit.pas

delphi sqlserver 学生学籍管理系统

unit bycpunit;

interface

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

type
  Tbycp = class(TForm)
    Panel1: TPanel;
    Label1: TLabel;
    Label2: TLabel;
    ComboBox1: TComboBox;
    ComboBox2: TComboBox;
    Button1: TButton;
    procedure FormCreate(Sender: TObject);
    procedure ComboBox1Exit(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  bycp: Tbycp;

implementation

uses datadomule, byfplrunit;

{$R *.dfm}

procedure Tbycp.FormCreate(Sender: TObject);   //添加班级号和专业号
begin
combobox1.Items.clear;
with datamodule1.qry_bycp do
begin
 close;
 sql.clear;
 sql.add('select * from zyb0') ;
 open;
 first;

if recordcount>0 then
// combobox1.text:=Fields[1].asstring;
repeat
 combobox1.items.add(fields[1].asstring);
 until findnext=false;
end;
end;

procedure Tbycp.ComboBox1Exit(Sender: TObject);
begin
combobox2.Items.Clear;
with datamodule1.qry_bycp do
begin
close;
sql.Clear;
sql.add('select * from bjb0 where zymc=:name');
parambyname('name').asstring:=combobox1.text;
open;
if recordcount>0 then
 combobox2.text:=Fields[0].asstring;
repeat
 combobox2.items.add(fields[0].asstring);
 until findnext=false;
end;
end;

procedure Tbycp.Button1Click(Sender: TObject);
begin
with datamodule1.qry_bycp do
begin
close;
sql.Clear;
sql.add('select * from byqk where bjh0=:dd');
parambyname('dd').asstring:=combobox2.text;
open;
if findfirst then
begin
application.MessageBox('该班的毕业信息已经输入了！','提示',mb_ok+mb_iconinformation);
exit;
 
end;
end;
bycpfrm:=tbycpfrm.create(self);
bycpfrm.showmodal;
end;

end.