Hello everybody,
you can use ConfigurationManager.AppSettings.Set method
(ConfigurationManager is in System.Web.Configuration namespace) to store a
modified value from web.config.
To be practical, you define a custom key in web.config:

<appSettings>
<add key="ReportButtonClick" value="0" />
</appSettings>

retrieve value of the key with Get method:

counter = ConfigurationManager.AppSettings.Get("ReportButton Click")

modify this value:

counter = counter + 1

and write it back with Set method:

ConfigurationManager.AppSettings.Set("ReportButton Click", counter)

If I access back value with Get method, I find modified value but, of
course, web.config is NOT modified.
Where does Set method stores property's value?

it's an in-memory story. If you need it to actually modify the value inside
the config file, use one of the xml file objects to add the appropriate
value to the config. This is not a recommended approach by the way, but it
is a valid one.

--
Regards,
Alvin Bruney [MVP ASP.NET]

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Now Available @ www.lulu.com/owc
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"natasha" <natasha (AT) discussions (DOT) microsoft.com> wrote