list all files from a directory in a string grid with delphi
-
20-06-2021 - |
Question
I am working with Delphi 7 and I would like to list all the files in a given directory in a string grid (one file per row and all in 1 column). I have searched for about an hour now and cannot find any examples on how to do this so any help you can provide would be appreciated.
La solution
This will fill a TStrings
descendant (eg., TStringList
, TMemo.Lihes
, and so forth) with all of the files in a specified folder:
function GetFiles(const StartDir: String; const List: TStrings): Boolean;
var
SRec: TSearchRec;
Res: Integer;
begin
if not Assigned(List) then
begin
Result := False;
Exit;
end;
Res := FindFirst(StartDir + '*.*', faAnyfile, SRec );
if Res = 0 then
try
while res = 0 do
begin
if (SRec.Attr and faDirectory <> faDirectory) then
// If you want filename only, remove "StartDir +"
// from next line
List.Add( StartDir + SRec.Name );
Res := FindNext(SRec);
end;
finally
FindClose(SRec)
end;
Result := (List.Count > 0);
end;
Use it like this to populate your TStringGrid
(Grid
in the code below - I added code to auto-size the column based on the length of the longest filename):
var
SL: TStringList;
i: Integer;
MaxWidth, CurrWidth: Integer;
const
Padding = 10;
begin
SL := TStringList.Create;
try
if GetFiles('C:\Temp\', SL) then
begin
MaxWidth := Grid.ColWidths[0];
for i := 0 to SL.Count - 1 do
begin
CurrWidth := Grid.Canvas.TextWidth(SL[i]);
if CurrWidth > MaxWidth then
MaxWidth := CurrWidth;
// Populates first column in stringgrid.
Grid.RowCount := Grid.RowCount + 1;
Grid.Cells[0, Grid.RowCount - 1] := SL[i];
end;
Grid.ColWidths[0] := MaxWidth + Padding;
end;
finally
SL.Free;
end;
end;
Note that this code requires the path to include the trailing backslash after the folder name; you can modify it easily to automatically add it if needed, or to accept both a folder name and a file mask to include only certain files.
Autres conseils
Use SysUtil.FindFirst/FindNext/FindClose to get files
Simply insert the string at desired row/column. Increase "RowCount" as needed: