match = null;
foreach(var item in items)
{
  foreach(var criterion in criteria)
  {
    if (!criterion.IsMetBy(item)) //如果不符合標(biāo)準(zhǔn)
    {
        //那么說明這個item肯定不是要查找的，那么應(yīng)該在外層循環(huán)執(zhí)行continue操作
    }
  }
  match = item;
  break;
}

match = null;
foreach(var item in items)
{
  foreach(var criterion in criteria)
  {
    if (!criterion.IsMetBy(item))
    {
      goto OUTERCONTINUE;
    }
  }
  match = item;
  break;

OUTERCONTINUE:

}

match = null;
foreach(var item in items)
{
  if (MeetsAllCriteria(item, critiera))
  {
    match = item;
    break;
  }
}

foreach(var criterion in criteria)
  if (!criterion.IsMetBy(item))
    return false;
return true;

match = null;
foreach(var item in items)
{
 foreach(var criterion in criteria)
 {
   HasMatch=true;
   if (!criterion.IsMetBy(item))
   {
     // No point in checking anything further; this is not
     // a match. We want to “continue” the outer loop. How?
    HasMatch=false;
    break;
   }
 }
 if(HasMatch) {
    match = item;
    break;
 }
}

var matches = from item in items
              where criteria.All(
                criterion=>criterion.IsMetBy(item))
              select item;
match = matches.FirstOrDefault();