speichern und laden eines stringgrid

[herrentor]

ich hab ein problem mit dem speichern und laden eines stringgrids. hier zeigt er die fehler (ungenügende forward- oder external-deklaration:'TForm1.LoadTab') und
(ungenügende forward- oder external-deklaration:'TForm1.LoadTab') an.

Code:

type
 TForm1 = class(TForm) 
  procedure LoadTab(Sender: TObject; const FileName: TFileName);
  procedure OeffnenClick(Sender: TObject);
  procedure SaveTab(Sender: TObject; const FileName: TFileName);
  procedure Speichern1Click(Sender: TObject);

fürs speichern:

Code:

procedure SaveTab(Tab: TStringGrid; const FileName: TFileName);
var 
  f:    TextFile; 
  i, k: Integer; 
begin 
  AssignFile(f, FileName); 
  Rewrite(f);
  with Tab do 
  begin 
    // Write number of Columns/Rows 
    Writeln(f, ColCount); 
    Writeln(f, RowCount); 
    // loop through cells 
    for i := 0 to ColCount - 1 do 
      for k := 0 to RowCount - 1 do 
        Writeln(F, Cells[i, k]); 
  end; 
  CloseFile(F); 
end;

procedure TForm1.Speichern1Click(Sender: TObject);
begin
 SaveTab(Tab, 'c:\grid.txt');
end;

und fürs laden:

Code:

procedure LoadTab(Tab: TStringGrid; const FileName: TFileName);
var
  f:          TextFile; 
  iTmp, i, k: Integer; 
  strTemp:    String; 
begin 
  AssignFile(f, FileName);

  with Tab do
  begin
    // Get number of columns 
    Readln(f, iTmp); 
    ColCount := iTmp; 
    // Get number of rows 
    Readln(f, iTmp); 
    RowCount := iTmp; 
    // loop through cells & fill in values 
    for i := 0 to ColCount - 1 do 
      for k := 0 to RowCount - 1 do 
      begin 
        Readln(f, strTemp); 
        Cells[i, k] := strTemp; 
      end; 
  end; 
  CloseFile(f); 
end;

procedure TForm1.OeffnenClick(Sender: TObject);
begin
 LoadTab(Tab, 'c:\grid.txt');
end;

was ist da los?

danke im voraus.