How do you remove a SharedProperty value?

[cradster]

I have a VB6 AcitveX DLL that uses MTS SharedPropertyManager. My object is called from ASP pages and the SessionID of the callers session is used as a Property name when creating a SharedProperty. When the users session dies (Session_OnEnd()) I would like to be able to destroy or delete the property that I created specific to the current users session. The only methods within the SharedProperty objects are to reference an existing property or to create a new one. How would I implement a DeleteProperty method of my own, bearing in mind that a new property gets created everytime a user hits my website.

 

[jmarler]

The closest I seen to doing this is to set the value to a Null. Yes, the property is still there (and will remain there until the process comes down), but the memory consumotion is minimal. If there is a way to actually REMOVE the property without bringing the process down, I would love to know it as well. Util then, just set it to null and go on. - Jeff Marler B-)

 

[DASMAN]

As far as i know, there's no way to remove a shared property, to solve this, I "reuse" the memory or set it to null when it's not used. May be you should try some way to mark the shp as deleted and then reuse instead of create a new one.

DASMAN

 

[jmarler]

DASMAN,
Your idea would work great (reusing the Shared Property) unless the index used to retrieve that property meant something (such as state/product codes). If the index key use is not important, then most definitely reuse the "expired" properties. Otherwise, the best I can think of is top set them to Null.
Does anyone out there actually know how to physically remove a shared property without bringing the process down?
- Jeff Marler B-)

 

[cradster]

I have managed to work around this problem by reusing expired properties, to do this I keep some XML (Stored As A Shared Property)which I use as a cross reference data source, instead of using the SessionID of the callers ASP session as the Name of the property, I use PropertyByPosition. The SessionID then maps to the Position (PropertyByPosition) that is relevent to the Caller. When a Session Expires (SessionOnEnd()) I set the PropertyByPosition to Null and flag the position as being available. I know this isn't a fix, just a workaround, I would prefer to be able to destroy expired properties, but for now, this solution works 4 me.