unit frm_StudentU;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, frm_infoU, DB, StdCtrls, Grids, DBGrids, ComCtrls,Control_StudentU
  ,classesU, ExtCtrls,Control_classU;

type
  Tfrm_Student = class(Tfrm_info)
    edt_studentNo: TEdit;
    Label1: TLabel;
    edt_native: TEdit;
    Label2: TLabel;
    edt_name: TEdit;
    Label3: TLabel;
    edt_address: TEdit;
    Label4: TLabel;
    edt_IDCard: TEdit;
    Label5: TLabel;
    Label6: TLabel;
    Label7: TLabel;
    DTP_birthday: TDateTimePicker;
    cbx_sex: TComboBox;
    Label8: TLabel;
    Label9: TLabel;
    edt_postalcode: TEdit;
    Label10: TLabel;
    Memo_remark: TMemo;
    Label11: TLabel;
    edt_name_s: TEdit;
    btn_search_name: TButton;
    image_pic: TImage;
    Label12: TLabel;
    OpenD_pic: TOpenDialog;
    Label13: TLabel;
    edt_nation: TEdit;
    Label14: TLabel;
    edt_homeTel: TEdit;
    DTP_indate: TDateTimePicker;
    Label15: TLabel;
    cbx_class: TComboBox;
    Label16: TLabel;
    edt_duty: TEdit;
    Label17: TLabel;
    Label18: TLabel;
    edt_stdNo_s: TEdit;
    btn_search_stdNo: TButton;
    procedure FormShow(Sender: TObject);
    procedure DBGrid_infoCellClick(Column: TColumn);
    procedure btn_addClick(Sender: TObject);
    procedure btn_delClick(Sender: TObject);
    procedure btn_editClick(Sender: TObject);
    procedure btn_search_nameClick(Sender: TObject);
    procedure image_picClick(Sender: TObject);
    procedure edt_postalcodeKeyPress(Sender: TObject; var Key: Char);
    procedure btn_search_stdNoClick(Sender: TObject);
  private
    stdNo:string;//保存當前學生證號
  public
    //填充數(shù)據(jù)
    procedure FillData;override;
  end;

var
  frm_Student: Tfrm_Student;

implementation

{$R *.dfm}
procedure Tfrm_Student.FillData;
begin
  DataSource_info.DataSet:=Control_StudentU.GetStudentArray;
  self.DBGrid_info.Columns[2].Visible  :=false;//照片路徑不可見
  Control_classU.FillCombobox(self.cbx_class);
end;

procedure Tfrm_Student.FormShow(Sender: TObject);
begin
  inherited;
   FillData;
end;

procedure Tfrm_Student.DBGrid_infoCellClick(Column: TColumn);
var
  WorkPath:string;
begin
  if self.DBGrid_info.Fields[0].IsNull then
    exit;
  stdNo:= self.DBGrid_info.Fields[0].Value;//保存當前學生證號
  self.edt_studentNo.Text :=self.DBGrid_info.Fields[0].Value;
  self.edt_name.Text:=self.DBGrid_info.Fields[1].Value;
   //顯示照片信息
  WorkPath := ExtractFilePath(Application.ExeName);
  try
  self.image_pic.Picture.LoadFromFile(WorkPath+self.DBGrid_info.Fields[2].Value);
  except
  self.image_pic.Picture:=nil;
  end;
  self.cbx_sex.Text:=self.DBGrid_info.Fields[3].Value;
  self.edt_nation.Text:=self.DBGrid_info.Fields[4].Value;
  self.DTP_birthday.Date:=self.DBGrid_info.Fields[5].Value;
  self.edt_native.Text :=self.DBGrid_info.Fields[6].Value;
  self.edt_IDCard.Text:=self.DBGrid_info.Fields[7].Value;
  self.edt_hometel.Text:=self.DBGrid_info.Fields[8].Value;
  self.edt_address.Text:=self.DBGrid_info.Fields[9].Value;
  self.edt_postalcode.Text:=self.DBGrid_info.Fields[10].Value;
  self.DTP_indate.Date:=self.DBGrid_info.Fields[11].Value;
  self.cbx_class.Text:=self.DBGrid_info.Fields[12].Value;
  self.edt_duty.Text:=self.DBGrid_info.Fields[13].Value;
  self.Memo_remark.Text:=self.DBGrid_info.Fields[14].Value;
  inherited;
end;

procedure Tfrm_Student.btn_addClick(Sender: TObject);
var
  Student:TStudent;
  WorkPath:string;
begin
  inherited;
 if((self.edt_studentNo.Text='') or (edt_Name.Text='')
        or (edt_nation.Text='') or (self.edt_native.Text='')
        or (edt_IDCard.Text='') or (self.edt_homeTel.Text='')
        or (edt_address.Text='') or (self.edt_postalcode.Text='')
        ) then
        begin
           MessageBox(Handle, '內容填寫不正確！', '信息', MB_ICONEXCLAMATION);
           exit;
        end;
       //查找是否存在重復
      if (Control_StudentU.GetStudentByStudentNo(trim(edt_studentNo.Text)))<>nil then
        begin
          MessageBox(Handle, '該學號已經存在,請重新設置！', '信息', MB_ICONEXCLAMATION);
          exit;
        end;
     WorkPath := ExtractFilePath(Application.ExeName);
     Student:=TStudent.Create;
     Student.stdNo:=self.edt_studentNo.Text;
     Student.stdName:=self.edt_name.Text;
     Student.picPath:='photo\'+Student.stdNo+'.bmp';
     Student.sex:=self.cbx_sex.Text;
     Student.nation:=self.edt_nation.Text;
     Student.birthday:=DateToStr(self.DTP_birthday.date);
     Student.native:=self.edt_native.Text;
     Student.IDCard:=self.edt_IDCard.Text;
     Student.homeTel:=self.edt_homeTel.Text;
     Student.address:=self.edt_address.Text;
     Student.postalcode:=self.edt_postalcode.Text;
     Student.inDate:=DateTostr(self.DTP_indate.Date);
     Student.ClassName:=self.cbx_class.Text;
     Student.duty:=self.edt_duty.Text;
     Student.remark:=self.Memo_remark.Text;
           
      if(Control_StudentU.AddStudent(Student)) then
        begin

          self.image_pic.Picture.SaveToFile(WorkPath+Student.picPath);
          MessageBox(Handle, '添加成功！', '信息', MB_ICONASTERISK);
          //刷新內容
          FillData;
        end
      else
        begin
          MessageBox(Handle, '添加失敗！', '信息', MB_ICONEXCLAMATION);
          exit;
        end;

end;

procedure Tfrm_Student.btn_delClick(Sender: TObject);
begin
 if MessageBox(Handle, '您確定要刪除該學生信息', '信息',
         MB_ICONQUESTION or MB_OKCANCEL) = IDOK then
        begin
          Control_StudentU.DelStudent(self.edt_studentNo.Text);
          FillData;
          if self.DBGrid_info.Fields[0].IsNull then
            exit;
          self.edt_studentNo.Text :=self.DBGrid_info.Fields[0].Value;
          self.edt_name.Text:=self.DBGrid_info.Fields[1].Value;
          self.image_pic.Picture.LoadFromFile(self.DBGrid_info.Fields[2].Value);
          self.cbx_sex.Text:=self.DBGrid_info.Fields[3].Value;
          self.edt_nation.Text:=self.DBGrid_info.Fields[4].Value;
          self.DTP_birthday.Date:=self.DBGrid_info.Fields[5].Value;
          self.edt_native.Text :=self.DBGrid_info.Fields[6].Value;
          self.edt_IDCard.Text:=self.DBGrid_info.Fields[7].Value;
          self.edt_hometel.Text:=self.DBGrid_info.Fields[8].Value;
          self.edt_address.Text:=self.DBGrid_info.Fields[9].Value;
          self.edt_postalcode.Text:=self.DBGrid_info.Fields[10].Value;
          self.DTP_indate.Date:=self.DBGrid_info.Fields[11].Value;
          self.cbx_class.Text:=self.DBGrid_info.Fields[12].Value;
          self.edt_duty.Text:=self.DBGrid_info.Fields[13].Value;
          self.Memo_remark.Text:=self.DBGrid_info.Fields[14].Value;
        end;
end;

procedure Tfrm_Student.btn_editClick(Sender: TObject);
var
  Student:TStudent;
  WorkPath:string;
begin
inherited;
  if edt_StudentNo.Text ='' then
    begin
       MessageBox(Handle, '沒有可以修改的數(shù)據(jù)！', '信息', MB_ICONEXCLAMATION);
      exit;
    end
  else
    begin
      if((self.edt_studentNo.Text='') or (edt_Name.Text='')
        or (edt_nation.Text='') or (self.edt_native.Text='')
        or (edt_IDCard.Text='') or (self.edt_homeTel.Text='')
        or (edt_address.Text='') or (self.edt_postalcode.Text='')
        ) then
      begin
         MessageBox(Handle, '內容填寫不正確！', '信息', MB_ICONEXCLAMATION);
         exit;
      end;
  //查找是否存在重復
  Student:=TStudent.Create;
  Student:=GetStudentByStudentNo(trim(edt_StudentNo.Text));
  if(Student<>nil) then
    begin
      if(Student.stdNo<>stdNo) then
        begin
          MessageBox(Handle, '該學生證號已經存在,請重新設置！', '信息', MB_ICONEXCLAMATION);
          exit;
        end;
    end;
   WorkPath := ExtractFilePath(Application.ExeName);
   Student:=TStudent.Create;
   Student.stdNo:=self.edt_studentNo.Text;
   Student.stdName:=self.edt_name.Text;
   Student.picPath:='photo\'+Student.stdNo+'.bmp';
   Student.sex:=self.cbx_sex.Text;
   Student.nation:=self.edt_nation.Text;
   Student.birthday:=DateToStr(self.DTP_birthday.date);
   Student.native:=self.edt_native.Text;
   Student.IDCard:=self.edt_IDCard.Text;
   Student.homeTel:=self.edt_homeTel.Text;
   Student.address:=self.edt_address.Text;
   Student.postalcode:=self.edt_postalcode.Text;
   Student.inDate:=DateTostr(self.DTP_indate.Date);
   Student.ClassName:=self.cbx_class.Text;
   Student.duty:=self.edt_duty.Text;
   Student.remark:=self.Memo_remark.Text;
  if(Control_StudentU.EditStudent(Student,stdNo)) then
    begin
      self.image_pic.Picture.SaveToFile(WorkPath+Student.picPath);
      MessageBox(Handle, '修改成功！', '信息', MB_ICONASTERISK);
      //刷新內容
      FillData;
    end
  else
     begin
      MessageBox(Handle, '修改失敗！', '信息', MB_ICONEXCLAMATION);
      exit;
     end;
      self.edt_StudentNo.SetFocus;
  end;
end;

procedure Tfrm_Student.btn_search_nameClick(Sender: TObject);
begin
  inherited;
if self.edt_name_s.Text='' then
  self.FillData
else
  begin
    self.DataSource_info.DataSet:=
         Control_StudentU.GetStudentByName(trim(self.edt_name_s.Text));
    self.DBGrid_info.Columns[2].Visible  :=false;
  end;
end;

procedure Tfrm_Student.image_picClick(Sender: TObject);
begin
  inherited;
  if self.OpenD_pic.Execute then
   begin
    image_pic.Picture.LoadFromFile(self.OpenD_pic.FileName );
   end;
end;

procedure Tfrm_Student.edt_postalcodeKeyPress(Sender: TObject;
  var Key: Char);
begin
  inherited;
if not((key in ['0'..'9',#8,#13])) then
    key:=#0;
end;

procedure Tfrm_Student.btn_search_stdNoClick(Sender: TObject);
begin
  inherited;
if self.edt_stdNo_s.Text='' then
  self.FillData
else
  begin
    self.DataSource_info.DataSet:=
         Control_StudentU.GetStudentQueryByStudentNo(trim(self.edt_stdNo_s.Text));
    self.DBGrid_info.Columns[2].Visible  :=false;
  end;
end;

end.