procedure TForm1.Button1Click(Sender: TObject); var sName1,sName2,sExt:string; begin if OpenDialog1.Execute then begin sName1:=ExtractFileName(OpenDialog1.FileName); sExt:=ExtractFileExt(OpenDialog1.FileName); sName2:=sName1; setLength(sName2,Length(sName1)-Length(sExt)); Edit1.Text:='文件名为:'+sName1; Edit2.Text:='扩展名为:'+sExt; Edit3.Text:='无扩展名的文件名为:'+sName2; end; end;
用 ChangeFileExt('FileName','.后缀形式') 最方便或者 :
---------------------function DelFileExt(FileName : String ): string; var I,j: Integer; s : String ; Source : String ; begin Source := FileName ; j := 0 ; I := 1 ; while I <> 0 do begin I := Pos('.',FileName) ; if I = 0 then begin I := J ; Break ; end Else begin S := Copy(FileName,(i+1),(Length(FileName) - I)) ; FileName := S ; j := I + J ; End; end; FileName := Source ; if I = 0 then Result := FileName Else Result := Copy(FileName, 1, I - 1); end; http://expert.csdn.net/Expert/topic/1313/1313791.xml?temp=.25552
var
sName1,sName2,sExt:string;
begin
if OpenDialog1.Execute then
begin
sName1:=ExtractFileName(OpenDialog1.FileName);
sExt:=ExtractFileExt(OpenDialog1.FileName);
sName2:=sName1;
setLength(sName2,Length(sName1)-Length(sExt));
Edit1.Text:='文件名为:'+sName1;
Edit2.Text:='扩展名为:'+sExt;
Edit3.Text:='无扩展名的文件名为:'+sName2;
end;
end;
---------------------function DelFileExt(FileName : String ): string;
var
I,j: Integer;
s : String ;
Source : String ;
begin
Source := FileName ;
j := 0 ;
I := 1 ;
while I <> 0 do
begin
I := Pos('.',FileName) ;
if I = 0 then
begin
I := J ;
Break ;
end
Else
begin
S := Copy(FileName,(i+1),(Length(FileName) - I)) ;
FileName := S ;
j := I + J ;
End;
end;
FileName := Source ;
if I = 0 then Result := FileName
Else
Result := Copy(FileName, 1, I - 1);
end;
http://expert.csdn.net/Expert/topic/1313/1313791.xml?temp=.25552