How to access a hashtable inside another hashtable?

[Pearls]

I have 2 hashtables:h1 and h2..
Here I require to use a hashtable within another hashtable..
Something like the following:

foreach(DictionaryEntry entry in h1)
{
/*some operation*/
  foreach(DictionaryEntry entry1 in h2)
  {
   /*processing*/
   }
}

But it results in an unexpected exception..
How can I do it??

[Pearls]

Is there any other way to access the contents of the hashtable without using foreach loop??

[Arjay]

The code you've shown doesn't give us enough detail to work with. Also, you didn't mention the error you are getting.

Please give us a more complete code snippet and also specify what exception you are getting.

[BigEd781]

Well where does h2 come from? If you have a nested dictionary and you want to iterate over the nested one it should be:

// I have to guess as to what your key is, so I chose int and A,B
var nestedDict = new Dictionary<int, Dictionary<A,B>>();
// populate dictionary
foreach(var dict in nestedDict.Values)
{
    // 'dict' is a Dictionary<A,B>
}