在C＃中，Hashtable默认通过引用或值传递？

Question

我想知道默认情况下是通过引用还是通过值传递的Hashtable？

Answer 1

In C#, all parameters are passed by value. But HashTable is a reference type, so the value being passed is a reference to the actual HashTable , if that makes sense.

It thus means the HashTable is not being copied when you pass it as a parameter, but if you try to overwrite the parameter value like so:

private void SomeMethod(HashTable ht)
{
   ...
   ht = new HashTable();
   ...
}

then it will not work, because you're overwriting the value parameter, not the actual HashTable .

Answer 2

对该哈希表的引用按值传递（除非您指定ref ）。