how to loop thru an hashtable?

i want to loop without the "for each" thru a hashtable..i know i've done this before..how do i do it?:confused:

DUMB ANSWER ...censored by stupidity police :o

err you're not looping thru the hashtable you're just repeating the "VALUE" 2 times, what i mean by looping is itenerating by all the collection

and about my posts 95% of them are of posts asking things because i really know nothing!

I made an arse of it there...i was out late last night ;)

Apolgies

Code:

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        Dim ht As New Hashtable()
        ht.Add("KEY1", "VALUE1")
        ht.Add("KEY2", "VALUE2")
        Dim ie As IEnumerator = ht.GetEnumerator
        While ie.MoveNext
            Debug.WriteLine(CType(ie.Current, DictionaryEntry).Value)
        End While

---

95% of my bum answers are because i dont listen...:o

err just in case the "for each" is an automatic use of .GetEnumerator() , in fact you can only use for each in classes that support the IEnumerator..so i dont want to use it as it doesnt allow that some items get added when the loop is ocurring...i really must use a regular loop (that ones that in c# are for (int i = 0; i<something;i++) {} ) because otherwise some errors will be raised thru my code!

i asked in vb.net forums as more ppl look here than in c# forums lol but i understand vb.net sintax so there is no problem

Try anyone of these loops

Code:

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foreach(DictionaryEntry de in ht)
{
        MessageBox.Show(de.Key.ToString() + " " + de.Value.ToString());
}
               
for(int i=0; i <= ht.Count; i++)
{
        //do what you want here
}

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devgrp i'd like to see the For(;;;) code and not the foreach..could u accomplish it? how do i refer to each item using the for(;;;) sintax?

I dont think you can with the for loop. The hashtable only supports an object indexer. You provide the key and it gives you the value, like this

Code:

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string name = ht["key"].ToString();

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I think you might have to use the foreach loop. I'll take another look though.

imagine i have a function that every 5 seconds lists all the the things of an hashtable to a listbox..and that sometimes i add 10 or 20 items to that hashtable..if when i am listing it is adding something to the hashtable an error will ocurr..for what i've reed up the only way to avoid it is to use a for(;;;) instead of a for each!

Quote:

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Originally posted by PT Exorcist
imagine i have a function that every 5 seconds lists all the the things of an hashtable to a listbox..and that sometimes i add 10 or 20 items to that hashtable..if when i am listing it is adding something to the hashtable an error will ocurr..for what i've reed up the only way to avoid it is to use a for(;;;) instead of a for each!

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I'm not quite following. Write some pseudo code. That might help.

Is that because of some threading issue? Or else how can you be adding to it and looping in it at the sametime? If so I believe you can use SyncLock to avoid any trouble.

good idea! i thin synclock will do the job!

yep it seems to have worked! tks by the idea!