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Hashtable to Dictionary

Anonymous User 2484 17-Dec-2013

I am trying to convert a hashtable to disctionary and found a a question here: convert HashTable to Dictionary in C#

public static Dictionary<K,V> HashtableToDictionary<K,V> (Hashtable table)
{
    return table
        .Cast<DictionaryEntry> ()
        .ToDictionary (kvp => (K)kvp.Key, kvp => (V)kvp.Value);
}
When I try to use it, there is an error in table.Cast; intellisense does not show "Cast" as a valid method.
c# c# 
Updated on 17-Dec-2013
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1 Answers

Pravesh Singh

Pravesh Singh

17-Dec-2013
Hi Ankita,

Enumerable.Cast doesn't exist in .NET 2, nor does most of the LINQ related methods (such as ToDictionary).

You'll need to do this manually via looping:

public static Dictionary<K,V> HashtableToDictionary<K,V> (Hashtable table)
{
    Dictionary<K,V> dict = new Dictionary<K,V>();
    foreach(DictionaryEntry kvp in table)
        dict.Add((K)kvp.Key, (V)kvp.Value);
    return dict;
}

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