.NET 4.x Перевести код с Delphi - C#

procedure TForm1.Button1Click(Sender: TObject);
 var
 list:tstringlist;
 s,a:string;
 i:integer;
  begin
 list:=tstringlist.Create;
 list.LoadFromFile('1.txt');
 list.LoadFromFile('2.txt');
 list.LoadFromFile('3.txt');
 Edit1.Text:=UpperCase(Edit1.Text);
 for I := 0 to List.Count - 1 do
 begin
 s:=list[I]; 
 a:=MD5DigestToStr(MD5String(s));
 if a=edit1.Text then 
 begin
 Edit2.Text:=s; 
 break;
 end;
 end;
 end;
 end.