Hashtable

[Dave]

I know how to get Hashtable value by key, but How can I get Hashtable key by
it's value?

 

[Dennis Myrén]

You would have to manually search the table for that value.
You could enumerate the table to look for the value, for instance:

Hashtable ht...;
object value...;
IDictionaryEnumerator de = ht.GetEnumerator();
while (de.MoveNext())
{
if (value == de.Value)
Console.WriteLine(de.Key);
}

 

[Jon Skeet [C# MVP]]

I know how to get Hashtable value by key, but How can I get Hashtable key by
it's value?

You can do it by brute force as Dennis said, but if you're going to
have to do this regularly, you should have two Hashtables - one to map
one way, and the other to map the other way.

 

[James Curran]

Note, also, that while the key is guaranteed to be unique (points to
just one value), the value is not -- several keys could have the same value.

--
Truth,
James Curran
[erstwhile VC++ MVP]
Home: www.noveltheory.com Work: www.njtheater.com
Blog: www.honestillusion.com Day Job: www.partsearch.com