How to access a hashtable inside another hashtable?

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

Code:

---

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??

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

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.

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

Code:

---

// 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>
}

---