Delphi 7 - Save to a Specific .INI Files Name

Question

I modified the MasterMan82's TIniFile code to read and write multi values from & to TEdit/TComboBox and TMemo.

Forgive my vague questions, my english is not good.

So, what I mean is:

I have a couple of .INI files, A.ini, B.ini, C.ini ....and so on. I just store A.ini as a variable in the code. It is not possible to put all the file names in the code.

When I opened A.ini, make some changes, click SAVE to save any changes made, and success!. Of course, because A.ini has been defined in the code.

However, when I open the file B.ini or C.ini or D.ini...making the change, and save, reopen the file, but all changes in the file is gone or not saved, of course, because only the A.ini was defined in the code.

So, my goal is how to keep or records all file revisions ?

Below is the code.

......

uses
  Windows, Messages, SysUtils, Variants, Classes, 
  Graphics, Controls, Forms, IniFiles, Dialogs;

......

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
var
   I, LinesCount: Integer;
   Read         : TIniFile;
begin
   Read  := TINIFile.Create(ExtractFilePath(Application.EXEName)+ 'A.ini');
// Read  := TIniFile.Create(ChangeFileExt(Application.Exename,'A.ini'));
  Try
   Proxy.Text   := Read.ReadString('SETTING','Proxy','');
   Port.Text    := Read.ReadString('SETTING','Port','');
   Route.Checked:= Read.ReadBool('SETTING','Route',False);
   // TO READ MEMO LINES
   LinesCount := Read.ReadInteger('MEMO', 'Lines Count', 0);
   for I := 0 to LinesCount-1 do
   Memo1.Lines.Insert(I, Read.ReadString('MEMO', 'Item'+IntToStr(I), ''));
  Finally
   Read.Free;
  end;
end;

procedure TForm1.SaveClick(Sender: TObject);
var
   I, LinesCount: Integer;
   ToSave       : TIniFile;
begin
  ToSave := TINIFile.Create(ExtractFilePath(Application.EXEName)+ 'A.ini');
  Try
   ToSave.WriteString('SETTING','Proxy',Proxy.Text);
   ToSave.WriteString('SETTING','Port',Port.Text);
   ToSave.WriteBool('SETTING','Route',Route.Checked);
   // TO SAVE MEMO LINES
   LinesCount := Memo1.Lines.Count;
   ToSave.WriteInteger('MEMO', 'Lines Count', LinesCount);
   for I := 0 to LinesCount-1 do
   ToSave.WriteString('MEMO', 'Item'+IntToStr(I), Memo1.Lines[I]);
  Finally
   ToSave.Free;
 end;
end;

procedure TForm1.OpenClick(Sender: TObject);
var
   I, LinesCount: Integer;
   OpenFile     : TIniFile;
begin    
   OpenDialog.Filter:='Ini File (.ini)|*.ini';
  if OpenDialog.Execute then begin
   Memo1.Clear;
   OpenFile := TINIFile.Create(OpenDialog.FileName);
  Try
   Proxy.Text   := OpenFile.ReadString('SETTING','Proxy','');
   Port.Text    := OpenFile.ReadString('SETTING','Port','');
   Route.Checked:= OpenFile.ReadBool('SETTING','Route',False);
   // TO READ MEMO LINES
   LinesCount   := OpenFile.ReadInteger('MEMO', 'Lines Count', 0);
   for I := 0 to LinesCount-1 do
   Memo1.Lines.Insert(I, OpenFile.ReadString('MEMO', 'Item'+IntToStr(I), ''));
  Finally
   OpenFile.Free;
  end;
 end;
end;

Answer 1

When you open an ini file, store the filename in a variable as explained in many comments.

Example, (FCurrentIniFilename: String; is a private variable in TForm1):

In the FormCreate event:

FCurrentIniFilename := ExtractFilePath(Application.EXEName)+ 'A.ini';
Read  := TINIFile.Create(FCurrentIniFilename);
...

In the OpenFile event:

if OpenDialog.Execute then begin
  FCurrentIniFilename := OpenDialog.Filename;
  Open := TINIFile.Create(FCurrentIniFileName);
  try
    ...
  finally
    Open.Free;
  end;
end;

When you are saving the information:

ToSave := TINIFile.Create(FCurrentIniFilename);