unituserfr.pas

信号机测试信号管理软件 其中含有文件上传及修改数据库数据的功能

unit Unituserfr;

interface

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

type
  Tuserfr = class(TForm)
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Panel1: TPanel;
    Panel2: TPanel;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    ComboBox1: TComboBox;
    BitBtn1: TBitBtn;
    BitBtn2: TBitBtn;
    BitBtn3: TBitBtn;
    BitBtn4: TBitBtn;
    BitBtn5: TBitBtn;
    BitBtn6: TBitBtn;
    BitBtn7: TBitBtn;
    BitBtn8: TBitBtn;
    DBGrid1: TDBGrid;
    procedure BitBtn1MouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
    procedure Panel2MouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
    procedure BitBtn1Click(Sender: TObject);
    procedure BitBtn5Click(Sender: TObject);
    procedure BitBtn3Click(Sender: TObject);
    procedure BitBtn4Click(Sender: TObject);
    procedure BitBtn2Click(Sender: TObject);
    procedure BitBtn6Click(Sender: TObject);
    procedure BitBtn7Click(Sender: TObject);
    procedure bitbtn8click(Sender: Tobject);
    procedure EditClear;
    procedure FormShow(Sender: TObject);//数据初始化
    procedure EditValue;
    procedure FindNext;//使下一个编辑框获得焦点
    Procedure FindPrior;//使上一个编辑框获得焦点
    Function IsNullEdit: Boolean;
    procedure Edit1KeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);//为编辑框赋值
      procedure Edit1Change(Sender: TObject);
      procedure DBGrid1CellClick(Column: TColumn);
       procedure DBGrid1MouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
 private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  userfr: Tuserfr;
  aa: Boolean = False ;//设置保存按钮是否可用

implementation
uses  unitmodule;

{$R *.dfm}

procedure Tuserfr.BitBtn1MouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
  Screen.Cursor := -21;
  TBitBtn(Sender).Font.Color := clRed;
end;

procedure Tuserfr.Panel2MouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
  Screen.Cursor := -2;
  BitBtn1.Font.Color := clBlue;
  BitBtn2.Font.Color := clBlue;
  BitBtn3.Font.Color := clBlue;
  BitBtn4.Font.Color := clBlue;
  BitBtn5.Font.Color := clBlue;
  BitBtn6.Font.Color := clBlue;
  BitBtn7.Font.Color := clBlue;
  BitBtn8.Font.Color := clBlue;
end;

procedure Tuserfr.BitBtn3Click(Sender: TObject);
var
  s,m: String;
  i: integer;
begin
  EditClear;
  aa := true;
  BitBtn5.Enabled := False;
  BitBtn6.Enabled := False;
  Edit1.setfocus;
  if  edit3.text<>'' then
  aa:=false;
end;

procedure Tuserfr.Edit1Change(Sender: TObject);
begin
  if (Trim(Edit1.Text)<>'')and (Trim(Edit2.Text)<>'')and(Trim(Edit3.Text)<>'')and
    (aa = True)then
     BitBtn4.Enabled := True
  else
    BitBtn4.Enabled := False;
end;

procedure Tuserfr.BitBtn1Click(Sender: TObject);
begin
 if Not DataModule2.ADOQuery8.Bof  then
  begin
    DataModule2.ADOQuery8.Prior;
    EditValue;
  end
  else
    BitBtn1.Enabled := False;
    BitBtn2.Enabled := True;
    BitBtn5.Enabled := True;
    BitBtn6.Enabled := True;
    BitBtn4.Enabled := False;
end;

procedure Tuserfr.BitBtn2Click(Sender: TObject);
begin
  if Not DataModule2.ADOQuery8.Eof then
  begin
    DataModule2.ADOQuery8.Next;
    EditValue;
  end
  else
    BitBtn2.Enabled := False;
    BitBtn1.Enabled := True;
    BitBtn5.Enabled := True;
    BitBtn6.Enabled := True;
    BitBtn4.Enabled := False;
end;

procedure Tuserfr.BitBtn5Click(Sender: TObject);
begin
  Try
  if Application.MessageBox('确实要修改该条记录吗？','提示',MB_YESNO )= ID_Yes then
  begin
    if IsNullEdit = False then
    begin
      with DataModule2.ADOQuery8 do
      begin
        Edit;
        BitBtn4.Enabled := False;
        FieldByName('工号').Value := Edit1.Text;
        FieldByName('姓名').Value := Edit2.Text ;
        FieldByName('密码').Value := Edit3.Text ;
        FieldByName('用户级别').Value := combobox1.Text;
        Post;
        Application.MessageBox('修改成功。','提示',0+64);
      end;
    end
    else 
    begin
      Application.MessageBox('数据项不能为空.','提示',64);
      Exit;
    end;
  end
  else
  EditValue;
  Except
  Application.MessageBox('系统出错。','提示',0+64);
  Close;
  end;
end;

procedure Tuserfr.BitBtn6Click(Sender: TObject);
begin
  BitBtn4.Enabled := False;
  Try
  if Application.MessageBox('确实要删除该条记录吗？','提示',MB_YESNO )= ID_Yes then
  begin
    with DataModule2.ADOQuery8 do
    begin
      Close;
      SQL.Clear;
      SQL.Add('delete * from 登录表 where 工号 = :a');
      Parameters.ParamByName('a').Value := Trim(Edit1.Text);
      ExecSQL;
    end;
    Application.MessageBox('该条记录已经删除。','提示',0+64);
    OnShow(Sender);
  end;
  Except
    Application.MessageBox('系统出错。','提示',0+64);
    Close;
  end;
end;

procedure Tuserfr.BitBtn7Click(Sender: TObject);
begin
  Self.OnShow(Sender);
  BitBtn4.Enabled := False;
  BitBtn6.Enabled := True;
  BitBtn5.Enabled := True;
  BitBtn2.Enabled := True;
  edit1.Text:='';
  edit2.Text:='';
  edit3.Text:='';
end;

procedure Tuserfr.BitBtn4Click(Sender: TObject);
var
a:string;
j:integer;
begin
  With DataModule2.ADOQuery8 do
  begin
    Close;
    SQL.Clear;
    SQL.Add('select * from 登录表 where 工号 = :a');
    Parameters.ParamByName('a').Value := Trim(Edit1.Text);
    Open;
  end;
  if DataModule2.ADOQuery8.RecordCount > 0 then
  begin
    Application.MessageBox('该信息已经存在。','提示',0+64);
    Exit;
  end;
  Try
  With DataModule2.ADOQuery8 do
  begin
    Close;
    SQL.Clear;
    SQL.Add('Insert  into 登录表 values ( :a,:b,:c,:d )');
    Parameters.ParamByName('a').Value := Trim(Edit1.Text);
    Parameters.ParamByName('b').Value := Trim(Edit2.Text);
    Parameters.ParamByName('c').Value := Trim(Edit3.Text);
    Parameters.ParamByName('d').Value := Trim(ComboBox1.Text);
    ExecSQL;
  end;
    Application.MessageBox('保存成功。','提示',0+64);
    BitBtn1.Enabled := True;
    BitBtn2.Enabled := True;
    self.OnShow(Sender);
    Except
    Application.MessageBox('系统出错。','提示',0+64);
    Close;
    end;

end;

procedure Tuserfr.EditClear;
begin
  Edit1.Clear;
  Edit2.Clear;
  Edit3.Clear;
end;



procedure Tuserfr.FormShow(Sender: TObject);
begin
  with DataModule2.ADOQuery8 do
  begin
    Close;
    SQL.Clear;
    SQL.Add('select * from 登录表 order by 工号 asc');
    execsql;
    Open;
  end;
  If DataModule2.ADOQuery8.FieldByName('工号').Value = null then
  begin
    Application.MessageBox('该表数据为空，请向该表中插入数据。','提示',0+64);
    BitBtn1.Enabled := False;
    BitBtn2.Enabled := False;
    BitBtn5.Enabled := False;
    BitBtn6.Enabled := False;
    BitBtn7.Enabled := False;
  end
  else
    editvalue;
  with DataModule2.ADOQuery8 do
  begin
    Close;
    SQL.Clear;
    SQL.Add('select 工号,姓名,密码,用户级别  from 登录表 order by 工号 asc');
    Open;
  end;
  if DataModule2.ADOQuery8.RecordCount>0 then
  begin
    DataModule2.DataSourceuser.DataSet := DataModule2.ADOQuery8;
  end
  else
   DataModule2.DataSourceuser.DataSet := Nil;

end;

procedure Tuserfr.EditValue;
var
    a:string;
begin
  if DataModule2.ADOQuery8.FieldByName('工号').Value <> null then
  begin
    Edit1.Text := DataModule2.ADOQuery8.FieldByName('工号').Value;
    Edit2.Text :=  DataModule2.ADOQuery8.FieldByName('姓名').Value;
    Edit3.Text :=  DataModule2.ADOQuery8.FieldByName('密码').Value;
   // a:=  DataModule2.ADOQuery8.FieldByName('').Value;
    Combobox1.text :=DataModule2.ADOQuery8.FieldByName('用户级别').value;

  end
  else
  begin
    Edit1.Clear;
    Edit2.Clear;
    Edit3.Clear;
    ComboBox1.Clear;
  end;
end;

procedure Tuserfr.Edit1KeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
  if key = vk_return then
    FindNext
  else if key = vk_Up then
    FindPrior;
end;


procedure Tuserfr.FindNext;
begin
  if FindNextControl(ActiveControl,True,False,False)is TEdit then
    if TEdit(FindNextControl(ActiveControl,True,False,False)).Enabled = True then
      TEdit(FindNextControl(ActiveControl,True,False,False)).SetFocus
    else
    begin
      ActiveControl := FindNextControl(ActiveControl,True,False,False);
      FindNext;
    end;
end;

procedure Tuserfr.FindPrior;
begin
  if FindNextControl(ActiveControl,False,False,False)is TEdit then
    if TEdit(FindNextControl(ActiveControl,False,False,False)).Enabled = True then
      TEdit(FindNextControl(ActiveControl,False,False,False)).SetFocus
    else
    begin
      ActiveControl := FindNextControl(ActiveControl,False,False,False);
      FindPrior;
    end;
end;

function Tuserfr.IsNullEdit: Boolean;
var
  Count: Integer;
begin
  IsNullEdit := False;
  For Count := 0 to Panel1.ControlCount-1 do
    if Panel1.Controls[Count]is TEdit then
      if Trim(TEdit(Panel1.Controls[Count]).Text)='' then
      begin
        IsNullEdit := True;
        Break;
      end;
end;

procedure Tuserfr.bitbtn8click(Sender:TObject);
begin
 inherited;
  close();
end;
procedure Tuserfr.DBGrid1CellClick(Column: TColumn);
begin
  if DataModule2.DataSourceuser.DataSet<> Nil then
    if DataModule2.DataSourceuser.DataSet.RecordCount>0 then
    begin
      Edit1.Text := DataModule2.ADOQuery8.FieldByName('工号').AsString;
      Edit2.Text := DataModule2.ADOQuery8.FieldByName('姓名').AsString;
      Edit3.Text := DataModule2.ADOQuery8.FieldByName('密码').AsString;
      ComboBox1.Text:=DataModule2.ADOQuery8.FieldByName('用户级别').AsString;
      BitBtn2.Enabled := True;
  end;
end;  
 procedure Tuserfr.DBGrid1MouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
  Screen.Cursor := -2;
end;

end.