Anything They Can Do » Garbage Collection http://www.anythingtheycando.com/blog Why can't you? Wed, 16 Nov 2011 20:23:48 +0000 http://wordpress.org/?v=2.8.4 en hourly 1 Silverlight Temp File Issue http://www.anythingtheycando.com/blog/index.php/2010/02/02/silverlight-temp-file-issue/ http://www.anythingtheycando.com/blog/index.php/2010/02/02/silverlight-temp-file-issue/#comments Tue, 02 Feb 2010 19:15:35 +0000 Matt http://www.anythingtheycando.com/blog/?p=190 I don't know how well known this issue is with Silverlight or exactly what versions that it effects I saw a few form posts about it. But my company has several applications written in Silverlight that use Web Services and it affects all of them. When Silverlight calls a web service it seems to create a temp file of exactly 20,971,520 bytes (exactly 20MB) each time . This is not a big deal if you call a web service only once or even ten times for that matter but when you have your app set to call it every 10 seconds at this rate you application will require 120MB per minute of hard disk space to continue running. It seems that when you reload the page the temp files are cleared but if you want the app to run for weeks on end to drive a display for example you have to manually force them to be cleared out. The files will be created in the %temp% folder and will follow a naming convention of XCP*.tmp (XCP833C.tmp, XCP6FAB.tmp, ect)

This is not so much a bug as something that you need to keep in mind when your using Silverlight to constantly refresh data from the server.

The fix for this is as follows:

GC.Collect();

If you just put that one line of code at the end of your Async Completed handler and all you massive hard drive usage issues will be a thing of the past.

It should also be noted that I can't recreate this issue when the app is running off the development server built into Visual Studio. It seems to only have this issue once I publish to IIS.

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