frm_evaluationu.pas

包括学生的教育经历

unit frm_evaluationU;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, frm_infoU, DB, StdCtrls, Grids, DBGrids,Control_evaluationU,
  ClassesU,Control_StudentU;

type
  Tfrm_evaluation = class(Tfrm_info)
    Label1: TLabel;
    edt_stdNo: TEdit;
    edt_edate: TEdit;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Memo_remark: TMemo;
    cbx_type: TComboBox;
    Label5: TLabel;
    Label18: TLabel;
    edt_stdNo_s: TEdit;
    btn_search_stdNo: TButton;
    procedure btn_addClick(Sender: TObject);
    procedure btn_delClick(Sender: TObject);
    procedure btn_editClick(Sender: TObject);
    procedure DBGrid_infoCellClick(Column: TColumn);
    procedure btn_search_stdNoClick(Sender: TObject);
  private
    { Private declarations }
  public
    procedure FillData;override;
  end;

var
  frm_evaluation: Tfrm_evaluation;

implementation

{$R *.dfm}
procedure Tfrm_evaluation.FillData;
begin
  self.DataSource_info.DataSet:=Control_evaluationU.GetEvaluationArray;
  self.DBGrid_info.Columns[0].Visible  :=false;
end;

procedure Tfrm_evaluation.btn_addClick(Sender: TObject);
var
  Evaluation:TEvaluation;
  Student:TStudent;
begin
  inherited;
 if((edt_stdNo.Text='')) then
        begin
           MessageBox(Handle, '内容填写不正确！', '信息', MB_ICONEXCLAMATION);
           exit;
        end;
 Student:=TStudent.Create;
 Student:=Control_StudentU.GetStudentByStudentNo(self.edt_stdNo.Text);
     if Student=nil then
       begin
         MessageBox(Handle, '学号填写不正确！', '信息', MB_ICONEXCLAMATION);
         edt_stdNo.SetFocus;
         exit;
       end;

      Evaluation:=TEvaluation.Create;
      Evaluation.id:=edt_stdNo.Tag;
      Evaluation.stdNo:=trim(self.edt_stdNo.Text);
      Evaluation.Edate:=DateToStr(now);
      Evaluation.Etype:=self.cbx_type.Text;
      Evaluation.remark:=self.Memo_remark.Text;

      if(Control_EvaluationU.AddEvaluation(Evaluation)) then
        begin
          MessageBox(Handle, '添加成功！', '信息', MB_ICONASTERISK);
          //刷新内容
          FillData;
          if self.DBGrid_info.Fields[0].IsNull then
            begin
              self.edt_stdNo.Tag:=0;//保存id
              self.edt_stdNo.Text:='';
              self.edt_edate.Text :='';
              self.cbx_type.ItemIndex:=0;
              self.Memo_remark.Text:='';
            end
          else
            begin
              self.edt_stdNo.Tag:=self.DBGrid_info.Fields[0].Value;//保存id
              self.edt_stdNo.Text:=self.DBGrid_info.Fields[1].Value;
              self.edt_edate.Text :=self.DBGrid_info.Fields[2].Value;
              self.cbx_type.Text:=self.DBGrid_info.Fields[3].Value;
              self.Memo_remark.Text:=self.DBGrid_info.Fields[4].Value;
            end;
        end
      else
        begin
          MessageBox(Handle, '添加失败！', '信息', MB_ICONEXCLAMATION);
          exit;
        end;
end;

procedure Tfrm_evaluation.btn_delClick(Sender: TObject);
begin
  inherited;
if MessageBox(Handle, '您确定要删除该信息', '信息',
     MB_ICONQUESTION or MB_OKCANCEL) = IDOK then
    begin
      Control_evaluationU.Delevaluation(self.edt_stdNo.Tag);
      FillData;
      if self.DBGrid_info.Fields[0].IsNull then
        begin
          self.edt_stdNo.Tag:=0;//保存id
          self.edt_stdNo.Text:='';
          self.edt_edate.Text :='';
          self.cbx_type.ItemIndex:=0;
          self.Memo_remark.Text:='';
        end
      else
        begin
          self.edt_stdNo.Tag:=self.DBGrid_info.Fields[0].Value;//保存id
          self.edt_stdNo.Text:=self.DBGrid_info.Fields[1].Value;
          self.edt_edate.Text :=self.DBGrid_info.Fields[2].Value;
          self.cbx_type.Text:=self.DBGrid_info.Fields[3].Value;
          self.Memo_remark.Text:=self.DBGrid_info.Fields[4].Value;
        end;
    end;
end;

procedure Tfrm_evaluation.btn_editClick(Sender: TObject);
var
  Evaluation:TEvaluation;
  Student:TStudent;
begin
  inherited;
 if edt_stdNo.Text ='' then
    begin
      MessageBox(Handle, '没有可以修改的数据！', '信息', MB_ICONEXCLAMATION);
      exit;
    end
  else
    begin
      if((edt_stdNo.Text='')) then
      begin
         MessageBox(Handle, '内容填写不正确！', '信息', MB_ICONEXCLAMATION);
         exit;
      end;
     Student:=TStudent.Create;
     Student:=Control_StudentU.GetStudentByStudentNo(self.edt_stdNo.Text);
     if Student=nil then
       begin
         MessageBox(Handle, '学号填写不正确！', '信息', MB_ICONEXCLAMATION);
         edt_stdNo.SetFocus;
         exit;
       end;

      Evaluation:=TEvaluation.Create;
      Evaluation.id:=edt_stdNo.Tag;
      Evaluation.stdNo:=trim(self.edt_stdNo.Text);
      Evaluation.Edate:=trim(self.edt_edate.Text);
      Evaluation.Etype:=self.cbx_type.Text;
      Evaluation.remark:=self.Memo_remark.Text;

      if(Control_evaluationU.Editevaluation(evaluation)) then
        begin
          MessageBox(Handle, '修改成功！', '信息', MB_ICONASTERISK);
          //刷新内容
          FillData;
        end
      else
         begin
          MessageBox(Handle, '修改失败！', '信息', MB_ICONEXCLAMATION);
          exit;
         end;
          self.edt_stdNo.SetFocus;
  end;
end;

procedure Tfrm_evaluation.DBGrid_infoCellClick(Column: TColumn);
begin
  inherited;
      if self.DBGrid_info.Fields[0].IsNull then
        begin
          self.edt_stdNo.Tag:=0;//保存id
          self.edt_stdNo.Text:='';
          self.edt_edate.Text :='';
          self.cbx_type.ItemIndex:=0;
          self.Memo_remark.Text:='';
        end
      else
        begin
          self.edt_stdNo.Tag:=self.DBGrid_info.Fields[0].Value;//保存id
          self.edt_stdNo.Text:=self.DBGrid_info.Fields[1].Value;
          self.edt_edate.Text :=self.DBGrid_info.Fields[2].Value;
          self.cbx_type.Text:=self.DBGrid_info.Fields[3].Value;
          self.Memo_remark.Text:=self.DBGrid_info.Fields[4].Value;
        end;
end;

procedure Tfrm_evaluation.btn_search_stdNoClick(Sender: TObject);
begin
  inherited;
  self.DataSource_info.DataSet:=
       Control_evaluationU.GetEvaluationByStdNO(self.edt_stdNo_s.Text);
  self.DBGrid_info.Columns[0].Visible  :=false;
end;

end.