CODEWITHSUNDEEP
c#hashtable
Konstantin Mokhov
Konstantin Mokhov

Reputation: 672

foreach items in hashtable

I need to use Hastable (Not List and not Dictionary), and I have many variables with keys. I add keys and variables to class, and use it in my program. But I don't know how to parse Hashtable. I tried this:

        Hashtable toboofer = null;

        string path = @"my.bin";

        FileStream fin = File.OpenRead(path);

        try
        {
            BinaryFormatter bf = new BinaryFormatter();

            toboofer = (Hashtable)bf.Deserialize(fin);

            for (int i = 0; i <= toboofer.Count; i++ )
                //foreach (KeyValuePair<string, string> kvp in toboofer)
                {
                    myclass cl = new myclass();
                    cl.Fio = toboofer[i].ToString();
                    cl.About = toboofer[i].ToString();
                }
        }

but I have an error. When I try string item or cycle for I have an error too.

Upvotes: 2

Views: 4768

Answers (2)

General-Doomer
General-Doomer

Reputation: 2761

Hashtable has DictionaryEntry as collection element

foreach (DictionaryEntry entry in toboofer)
{
    // do something
}

Make list of myclass from hashtable:

var listOfMyClass = toboofer.Cast<DictionaryEntry>().
                             Select(e => new myclass() 
               { Fio = e.Key.ToString(), About = e.Value.ToString() });

Upvotes: 6

Pranay Rana
Pranay Rana

Reputation: 176896

try this hashtable make use if DictionaryEntry, where KeyValuePair generic used by generic dictionary .Net 2 (and onwards)

Aslo note that Hashtable doesnt have generic version of it and Each element in hastable represented by DictionaryEntry

foreach (DictionaryEntry entry in hashtable)
    {
        Console.WriteLine("{0}, {1}", entry.Key, entry.Value);
    }

Upvotes: 1

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