سلام
احيانا تحتاج من التأكد من أن المكتوب داخل جملة String , مكتوب بصيغة عنوان بريد الكتروني صحيح ,
[l]
function InvalidEmail(const s: string): Boolean;
var
i: Integer;
c: string;
begin // ' ', ?, ?, ü, ?, [, ], (, ), : in EMail-Address
Result := (Trim(s) = '') or (Pos(' ', AnsiLowerCase(s)) > 0) or
(Pos('?', AnsiLowerCase(s)) > 0) or (Pos('?', AnsiLowerCase(s)) > 0) or
(Pos('ü', AnsiLowerCase(s)) > 0) or (Pos('?', AnsiLowerCase(s)) > 0) or
(Pos('[', AnsiLowerCase(s)) > 0) or (Pos(']', AnsiLowerCase(s)) > 0) or
(Pos('(', AnsiLowerCase(s)) > 0) or (Pos(')', AnsiLowerCase(s)) > 0) or
(Pos(':', AnsiLowerCase(s)) > 0);
if Result then Exit;
// @ not in EMail-Address;
i := Pos('@', s);
Result := (i = 0) or (i = 1) or (i = Length(s));
if Result then Exit;
Result := (Pos('@', Copy(s, i + 1, Length( s ) - 1)) > 0);
if Result then Exit;
// Domain <= 1
c := Copy(s, i + 1, Length(s));
Result := Length( c ) <= 1;
if Result then Exit;
i := Pos('.', c);
Result := (i = 0) or (i = 1) or ( i = Length( c ) );
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
if( InvalidEmail(Edit1.text) ) then
ShowMessage('Error ')
else
ShowMessage('OK')
end;
[/l]
وشكرا