procedure TForm1.Button1Click(Sender: TObject);
var
res : String;
ms : TIdMultiPartFormDataStream;    //uses IdMultipartFormData;
h: TIdhttp;
f:tstrings;
i:integer;
begin
if Opendialog1.Execute then
if Opendialog1.Files.count =0 then exit;

try
for i:=0 to Opendialog1.Files.Count-1 do
begin
f := TStrings.Create;
ms := TIdMultiPartFormDataStream.Create;
h := Tidhttp.Create(nil);
ms.AddFile('file1',Opendialog1.Files[i],'');
idhttp1.Request.ContentType := 'multipart/form-data' ;
res:=h.Post('http://www.xxx.com/u.asp?menu=up',ms);
if res<>'上传成功' then
//Application.MessageBox('图片上传成功!','提示',MB_OK+MB_ICONASTERISK)
//else
Application.MessageBox(pchar('图片上传失败!文件:'+Opendialog1.Files[i]),'ERROR',MB_OK+MB_ICONSTOP);
sleep(2000);
//f.Free;
//ms.Free;
//h.Free;
end;
finally
ms.Free;
end;
end;