Mega Code Archive
How to read a table textfile in a StringGrid
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Title: How to read a table-textfile in a StringGrid
procedure ReadTabFile(FN: TFileName; FieldSeparator: Char; SG: TStringGrid);
var
i: Integer;
S: string;
T: string;
Colonne, ligne: Integer;
Les_Strings: TStringList;
CountCols: Integer;
CountLines: Integer;
TabPos: Integer;
StartPos: Integer;
InitialCol: Integer;
begin
Les_Strings := TStringList.Create;
try
// Load the file, Datei laden
Les_Strings.LoadFromFile(FN);
// Get the number of rows, Anzahl der Zeilen ermitteln
CountLines := Les_Strings.Count + SG.FixedRows;
// Get the number of columns, Anzahl der Spalten ermitteln
T := Les_Strings[0];
for i := 0 to Length(T) - 1 do Inc(CountCols, Ord(IsDelimiter(FieldSeparator, T, i)));
Inc(CountCols, 1 + SG.FixedCols);
// Adjust Grid dimensions, Anpassung der Grid-Gr??e
if CountLines SG.RowCount then SG.RowCount := CountLines;
if CountCols SG.ColCount then SG.ColCount := CountCols;
// Initialisierung
InitialCol := SG.FixedCols - 1;
Ligne := SG.FixedRows - 1;
// Iterate through all rows of the table
// Schleife durch allen Zeilen der Tabelle
for i := 0 to Les_Strings.Count - 1 do
begin
Colonne := InitialCol;
Inc(Ligne);
StartPos := 1;
S := Les_Strings[i];
TabPos := Pos(FieldSeparator, S);
repeat
Inc(Colonne);
SG.Cells[Colonne, Ligne] := Copy(S, StartPos, TabPos - 1);
S := Copy(S, TabPos + 1, 999);
TabPos := Pos(FieldSeparator, S);
until TabPos = 0;
end;
finally
Les_Strings.Free;
end;
end;
Usage Example:
procedure TForm1.Button1Click(Sender: TObject);
begin
Screen.Cursor := crHourGlass;
// Open tab-delimited files
ReadTabFile('C:\TEST.TXT', #9, StringGrid1);
Screen.Cursor := crDefault;
end;
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