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uses ..., IniFiles;

...

procedure TForm1.Speichern;
var
  ini: TmemIniFile;
begin
  ini := TMemIniFile.Create('C:\Datei.ini');
  try
    ini.writeinteger('Abschnitt', 'Feld1', StrToInt(E1.Text));
    // ... weitere Felder
    ini.UpdateFile;
  finally
    ini.free;
  end;
end;                    

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procedure Button1.Click(Sender: TObject);
begin
  Self.Speichern; // Das wars auch schon.
end;                    

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ExtractFilePath(Application.ExeName)                    

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type
  TReMe = class(TForm)
    procedure TReMe.Speichern;                    

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type
  TReMe = class(TForm)
    procedure Speichern;

...

procedure TReMe.Speichern;
begin
  //
end;                    

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  ini := TMemIniFile.Create(ExtractFilePath(Application.ExeName) + 'Dateiname.ini');                    

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  ini := TMemIniFile.Create(ExtractFilePath(Application.ExeName) + 'Savedata.ini');                    

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    ini.writeinteger('Abschnitt', 'Feld1', StrToInt(E1.Text));                    

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uses ..., IniFiles;

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type
  TForm1 = class(TForm)
    e_Nr1: TEdit;
    e_Nr2: TEdit;
    e_Nr3: TEdit;
    procedure Speichern(Sender: TObject);
:
:
  private
:
    { Private-Deklarationen }
  public
:
    { Public-Deklarationen }
  end;

implementation
:

procedure TForm1.Speichern(Sender: TObject);
var
  ini: TIniFile;
  FName : string;
begin
  ini := TIniFile.Create('C:\temp\Datei.ini');
  FName := (Sender as TEdit).Name;
  try
    ini.writeString('Edit', FName, (Sender as TEdit).Text);
  finally
    ini.free;
  end;
end;                    

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type
  TDataRec: packed record
    str: String[25]; //String mit 25 Zeichen Länge
    int1, int2: Integer; //dazugehörige Integerwerte
  end;

  TDataRecArr = array[0..9] of TDataRec;

var
  MyDataArray: TDataRecArr;

//speichern:
Stream := TFileStream.Create('C:\test.dat', fmCreate);
try
  Stream.Write(MyDataArray, SizeOf(MyDataArray));
finally
  Stream.Free;
end;

//laden:
Stream := TFileStream.Create('C:\test.dat', fmOpenRead);
try
  Stream.Read(MyDataArray, SizeOf(MyDataArray));
finally
  Stream.Free;
end;                    

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    ini.writeString('Abschnitt', 'Feld1', [b][u]StrToInt[/u](E1.Text)[/b]);                    

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procedure TReMe.Load;
var
  ini: TmemIniFile;
begin
  ini := TMemIniFile.Create(ExtractFilePath(Application.ExeName) + 'Savedata.ini');
  try
    Ser01.Text := ini.ReadString('Serie01', 'Name', 'Ser01');
    S01.Text := ini.ReadInteger('Serie01', 'Season', 0);
    E01.Text := ini.ReadInteger('Serie01', 'Episode', 0);
//[...]
  finally
    ini.free;
  end;
end;

procedure TReMe.FormCreate(Sender: TObject);
begin
  Self.Load;
end;                    

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E01.Text := ini.ReadInteger('Serie01', 'Episode', 0);