HashTables

[slimroberts1]

Can any one tell me if there is some sort of sorting in a hashtable. I load a table with key+value pairs and would like to see them come out in the same order. But they seem to be random. Has any one any ideas.
Many thanks
Slim

 

[chiph]

Sorry, one of the definitions of a HashTable is that order isn't important. Maybe if you used an ArrayList?

Chip H.


If you want to get the best response to a question, please check out FAQ222-2244 first

 

[theoxyde]

You are looking for the SortedList, which is functionally similar to the Hashtable, but it maintains the order in which items are added. It still allows the key-value addressing, as well as addressing by index.

 

[slimroberts1]

Thanks for that I know that is what the book says, It also says that the order is as per adding order. But its not and I was wondering why not. The Arraylist I have been using and it works just fine. But as I need to fill a combo with a list of descriptions and when the user selects one get the code for that one I have had to use 2 array's one with code and one with description which is not the best way.
Many thanks
Slim

 

[venur]

Hi,

I am very new to C# and haven't done much of the work on it Yet. But I think you can use an Object which takes in Key + Value and add the Object to ArrayList. While Display you can iterate over the ArrayList to get the Key + Value from the Object into the combo box.

Cheers,
Venu

 

[chiph]

Slimroberts1 -

Since ArrayList takes objects of type Object, you can create a very small (!) class with the two values you need to track, so that you only need one ArrayList.

Chip H.



If you want to get the best response to a question, please check out FAQ222-2244 first