如何保存和加载多个标签的标题?

How to save and load captions of several labels?

我需要保存和加载多个标签的标题。我尝试为此使用 TMemo:

procedure TForm1.Button1Click(Sender: TObject);    
begin    
  if SaveDialog1.Execute then
  begin    
     Memo1.Lines.SaveToFile(saveDialog1.FileName+'.txt');    
  end;    
end;


procedure TForm1.Button2Click(Sender: TObject);
begin
  if OpenDialog1.Execute then
  begin
    Memo1.Lines.LoadFromFile(OpenDialog1.FileName);
  end;
end;

但不知道如何在TMemo上设置和获取Label1、Label2等具体数据

基于这个想法后面我会使用其他组件作为TEdit

在这里搞个备忘录真的没什么意义。您可能正在寻找 TStringList.

需要先将标签内容写入字符串列表:

procedure TForm1.Button1Click(Sender: TObject);
var
  SL: TStringList;
begin
  if SaveDialog1.Execute then
  begin
    SL := TStringList.Create;
    try
      SL.Add(Edit1.Text);
      SL.Add(Edit2.Text);
      // Rest of edits
      SL.SaveToFile(SaveDialog1.FileName);
    finally
      SL.Free;
    end;
  end;
end;

回读:

procedure TForm1.Button2Click(Sender: TObject);
var
  SL: TStringList;
begin
  if OpenDialog1.Execute then
  begin
    SL := TStringList.Create;
    try
      SL.LoadFromFile(OpenDialog1.FileName);
      Edit1.Text := SL[0];
      Edit2.Text := SL[1];
      // Same for rest of edits
    finally
      SL.Free;
    end;
  end;
end;

如果您必须对大量编辑控件执行此操作,则您可能使用了错误的用户界面。虽然不知道您要完成什么,但很难提出其他建议。

我认为最简单的方法是使用字符串列表 (TStringList) 而不是备忘录控件。它允许您保存 name/value 对,因此名称可以是标签的名称(或任何其他唯一标识符),它们的值是要在标签中显示的标题。

procedure TForm1.LoadFile(AFilename: String);
var
  Lst: TStringList;
begin
  Lst:= TStringList.Create;
  try
    Lst.LoadFromFile(AFilename);
    Label1.Caption:= Lst.Values['Label1'];
    Label2.Caption:= Lst.Values['Label2'];
    ...
  finally
    Lst.Free;
  end;
end;

procedure TForm1.SaveFile(AFilename: String);
var
  Lst: TStringList;
begin
  Lst:= TStringList.Create;
  try
    Lst.Values['Label1']:= Label1.Caption;
    Lst.Values['Label2']:= Label2.Caption;
    ...
    Lst.SaveToFile(AFilename);
  finally
    Lst.Free;
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);    
begin    
  if SaveDialog1.Execute then begin    
    SaveFile(saveDialog1.FileName+'.txt');    
  end;    
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  if OpenDialog1.Execute then begin
    LoadFile(OpenDialog1.FileName);
  end;
end;

这个code我根据自己的要求做了一点修改

procedure TForm1.ButtonSaveClick(Sender: TObject);
var
  I: Integer;
  Strings: TStringList;
begin
  if SaveDialog1.Execute then
  begin
  Strings := TStringList.Create;
  try
    for I := 0 to ComponentCount - 1 do
      begin
      if Components[I] is TLabel then
        Strings.Values[Components[I].Name] := TLabel(Components[I]).Caption;
      if Components[I] is TEdit then
        Strings.Values[Components[I].Name] := TEdit(Components[I]).Text;
    end;
    Strings.SaveToFile(SaveDialog1.FileName);
  finally
    Strings.Free;
  end;
end;
end;

procedure TForm1.ButtonLoadClick(Sender: TObject);
var
  I: Integer;
  Control: TComponent;
  Strings: TStringList;
begin
  if OpenDialog1.Execute then
  begin
  Strings := TStringList.Create;
  try
    Strings.LoadFromFile(OpenDialog1.FileName);
    for I := 0 to Strings.Count - 1 do
    begin
      Control := FindComponent(Strings.Names[I]);
      if Control is TLabel then
        TLabel(Control).Caption := Strings.ValueFromIndex[I];
      if Control is TEdit then
        TEdit(Control).Text := Strings.ValueFromIndex[I];
    end;
  finally
    Strings.Free;
    end;
  end;
end;