Can't save HashTable, object ... as app settings?

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Could you please let me know if saving a hashtable as app setting is possible?
I can save a string, a StringCollection as app settings but can't do the same to many other types such as HashTable, object. I coded like this:
Settings.Default.Users = new HashTable();
Settings.Default.Users.Add(username, password);
Settings.Default.Save();
It should save the pair of key and value but it doesn't.
Each time the app starts that Settings.Default.Users becomes null.
Could you please show me how to save it? Please don't lead me to any solution for saving a pair of key and value without using HashTable. I want to use HashTable only.
Thank you very much!

Posted 30-Oct-11 15:52pm

King Boy

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Not Active · Accepted Answer · 2011-10-30T16:41:00

Solution 1

A Hashtable is a collection of name/value pairs.

Perhaps this will help
Understanding Section Handlers - App.config File[^]
How to: Create Custom Configuration Sections Using ConfigurationSection[^]

Posted 30-Oct-11 16:41pm

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[no name] 1-Nov-11 2:56am

Thank you! Uhm, it seems not easy to me (a newbie of both csharp and Xml). If possible, could you give me a sample code of saving exactly a HashTable to appSettings and loading it from appSettings?
Thank you very much!

Mehdi Gholam · Accepted Answer · 2011-10-30T18:38:00

Solution 2

You can use a serializer that understands hashtables like my fastJSON and save the output in your app settings.

Posted 30-Oct-11 18:38pm

Mehdi Gholam

Comments

[no name] 31-Oct-11 23:17pm

Sorry but this won't work for config files. Implementing a custom section handler is the way to handle this.

[no name] 1-Nov-11 3:01am

Once again I have received a good solution but too hard for me to understand and practice. If possible, could you give me a sample code demonstrating how to save/load a HashTable to/from appSettings?
Thank you very much!