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• How did My Object Get into ASP.NET Page State?

  - by Paul Knopf

  I know what this error is, how to fix it, etc. My question is that I don't know why my current page I am developing is throwing this error when I am not using the foo class directly in any way, nor am I setting anything to the viewstate. I am using postbacks alot, but like I said, I am not storing anything in the viewstate etc one integer. I am using nhibernate if that is relevant. Any idea why I need to mark this classes as serializable that arent being used? Where should I start investigating? [SerializationException: Type 'FlexiCommerce.Persistence.NH.ContentPersister' in Assembly 'FlexiCommerce.Persistence.NH, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' is not marked as serializable.] System.Runtime.Serialization.FormatterServices.InternalGetSerializableMembers(RuntimeType type) +9434541 System.Runtime.Serialization.FormatterServices.GetSerializableMembers(Type type, StreamingContext context) +247 System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitMemberInfo() +160 System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter, SerializationBinder binder) +218 System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Write(WriteObjectInfo objectInfo, NameInfo memberNameInfo, NameInfo typeNameInfo) +388 System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize(Object graph, Header[] inHeaders, __BinaryWriter serWriter, Boolean fCheck) +444 System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph, Header[] headers, Boolean fCheck) +133 System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph) +13 System.Web.UI.ObjectStateFormatter.SerializeValue(SerializerBinaryWriter writer, Object value) +2937 [ArgumentException: Error serializing value 'Music#2' of type 'FlexiCommerce.Components.Category.'] System.Web.UI.ObjectStateFormatter.SerializeValue(SerializerBinaryWriter writer, Object value) +3252 System.Web.UI.ObjectStateFormatter.SerializeValue(SerializerBinaryWriter writer, Object value) +2276 [ArgumentException: Error serializing value 'System.Object[]' of type 'System.Object[].'] System.Web.UI.ObjectStateFormatter.SerializeValue(SerializerBinaryWriter writer, Object value) +3252 System.Web.UI.ObjectStateFormatter.Serialize(Stream outputStream, Object stateGraph) +116 System.Web.UI.ObjectStateFormatter.Serialize(Object stateGraph) +57 System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Serialize(Object state) +4 System.Web.UI.Util.SerializeWithAssert(IStateFormatter formatter, Object stateGraph) +37 System.Web.UI.HiddenFieldPageStatePersister.Save() +79 System.Web.UI.Page.SavePageStateToPersistenceMedium(Object state) +108 System.Web.UI.Page.SaveAllState() +315 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2492

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• How to copy files without slowing down my app?

  - by Kevin Gebhardt

  I have a bunch of little files in my assets which need to be copied to the SD-card on the first start of my App. The copy code i got from here placed in an IntentService works like a charm. However, when I start to copy many litte files, the whole app gets increddible slow (I'm not really sure why by the way), which is a really bad experience for the user on first start. As I realised other apps running normal in that time, I tried to start a child process for the service, which didn't work, as I can't acess my assets from another process as far as I understood. Has anybody out there an idea how a) to copy the files without blocking my app b) to get through to my assets from a private process (process=":myOtherProcess" in Manifest) or c) solve the problem in a complete different way Edit: To make this clearer: The copying allready takes place in a seperate thread (started automaticaly by IntentService). The problem is not to separate the task of copying but that the copying in a dedicated thread somehow affects the rest of the app (e.g. blocking to many app-specific resources?) but not other apps (so it's not blocking the whole CPU or someting) Edit2: Problem solved, it turns out, there wasn't really a problem. See my answer below.

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• Why can't IE6 shows semi transparent png8 files with alpha filter ?

  - by vvo

  -- read the whole question before answering -- Hi, i work on a big website that had a lot (45000+) of png24 images (with semi transparency). I converted them to png8 and it works very well (a big help on page load time...). The thing is i had to keep png24 files for ie6 users (with alpha filter to have semi transparent pixels) because we all know that we can't use png 8 semi transparent images in IE6 : either the semi transparent pixels will be opaque or completely transparent. I tried to use the alpha image loader filter with png8 images but it just don't work, the pixels are still opaque/completely transparent, no semi transparency. What's the reason it's not working ? Is there a difference for IE when dealing with semi transparent pixels from a png24 or from a png8 ? I couldn't find any information on msdn websites or on stackoverflow... This is crazy... ! DISCLAIMER : i'm not searching for a f**ckin fix IE6 png or sh*t like that, i already know alpha image loader or htc techniques etc, theses all works well with PNG24 files but doesn't work with png8 files.

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• git + partly shared files between branches/repositories. Is it possible?

  - by Maxym

  One team in company I work for has the following problem. They develop an application, which will have different builds (e.g. different design depending on customer). so they have some code shared between builds, and some specific to build. E.g. first build has (example is meaningless about files, it is just to understand the problem; I don't know exactly which code differs) /src/class1.java /src/class2.java /res/image1.png /res/image2.png second project contains /src/class1.java /src/class3.java /res/image1.png /res/image3.png as you see, both have class1.java and image1.png. Evething else is different. The project is much more complex of course, so to contain everything in one project is not comfortable... But also to make different branches and commit the same code to all of them is not comfortable... probably I picked wrong direction thinking about this problem, but I just took a look at git (we use svn), and it allows separated repositories. The question is: is it possible to make different branches in git, but tell it that "these files should be shared between them" and other files should be only in those branches. Then when developer commits class1.java git synchronizes it in all branches/repositorias etc. Maybe there is another solution which can be easy taken?

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• Where do you use Java code? Trouble sending .jar files

  - by leigero

  Apologies for the generic nature of this question. I have been learning Java for a few months now, and I've created a few simple projects which have some functionality. I wanted to send the projects to a friend and I'm running into countless errors and struggles. Passing a .jar file is causing "Main class not found" errors when they try to open it. I tried using third party software to wrap the .jar files into an .exe file and the same errors still persist. Beyond that, I'm convinced that passing around .jar files wrapped into .exe files via third party software is NOT how Java was intended to be used. I've read two books on Java and they all talk about structuring the language, but I'm confused about WHERE I'm supposed to be using this code because it has become painfully obvious that it is NOT intended to be passed around in file format. Is this a server programming language? Used on the back end of websites mainly? I'm not sure where one would be using the code written in Java.

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• java.awt.Desktop.open doesn’t work with PDF files?

  - by Jason S

  It looks like I cannot use Desktop.open() on PDF files regardless of location. Here's a small test program: package com.example.bugs; import java.awt.Desktop; import java.io.File; import java.io.IOException; public class DesktopOpenBug { static public void main(String[] args) { try { Desktop desktop = null; // Before more Desktop API is used, first check // whether the API is supported by this particular // virtual machine (VM) on this particular host. if (Desktop.isDesktopSupported()) { desktop = Desktop.getDesktop(); for (String path : args) { File file = new File(path); System.out.println("Opening "+file); desktop.open(file); } } } catch (IOException e) { e.printStackTrace(); } } } If I run DesktopOpenBug with arguments c:\tmp\zz1.txt c:\tmp\zz.xml c:\tmp\ss.pdf (3 files I happen to have lying around) I get this result: (the .txt and .xml files open up fine) Opening c:\tmp\zz1.txt Opening c:\tmp\zz.xml Opening c:\tmp\ss.pdf java.io.IOException: Failed to open file:/c:/tmp/ss.pdf. Error message: The parameter is incorrect. at sun.awt.windows.WDesktopPeer.ShellExecute(Unknown Source) at sun.awt.windows.WDesktopPeer.open(Unknown Source) at java.awt.Desktop.open(Unknown Source) at com.example.bugs.DesktopOpenBug.main(DesktopOpenBug.java:21) What the heck is going on? I'm running WinXP, I can type "c:\tmp\ss.pdf" at the command prompt and it opens up just fine. edit: if this is an example of Sun Java bug #6764271 please help by voting for it. What a pain. :(

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• How can I use SCM on linked files in VS2008 projects?

  - by Tom Bushell

  Background: I'm using Visual-SVN V. 1.7.5 with VS2008. I'm fairly new to SVN. I have a Solution that uses source files that will be shared with other Solutions. I've put these files in a folder called "Shared", and added them to my Solution using "Add - Existing Item... - Add As Link" which works fine as far as VS2008 is concerned. But when I try to add the linked files to SVN using the "Add to Suversion" menu item on the file's context menu, I get a warning: "...not added to Subversion because it is out of working copy. Please setup working copy root using Visual SVN - Set Working Copy Root menu". I tried this, but this seems to change the root directory of the whole solution - not what I want to do. Googling and searching SO indicates that I may want to set up some SVN Externals. I tried to follow the examples, using the command line for the first time with Visual-SVN. But I just got a bunch of error messages I didn't understand. Questions: Are Externals the way to go here? If so, can someone provide some detailed, step-by-step help on how to do this with Visual-SVN?

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• How to install wgt files (widgets) on Samsung Star without an internet connection?

  - by Koning Baard XIV

  Hi, I just created a new widget by following a tutorial. I created a zip containing all files and renamed it to HelloWorld.wgt instead of HelloWorld.zip. I sent it to my phone via Bluetooth, but when I try to open the wgt file on my phone it says it can't open it, because it doesn't know the filetype. Is there a way to install homebrew widgets on a Samsung Star without using a webserver? Thanks,

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• How to compress files in Windows in batch file?

  - by Harriv

  Hi, I can compress files or folders in Windows from GUI by right clicking and selecting "Send to .. Compressed (zip) file..". Is it possible to do same in batch file?

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• How to use sudo with rcp command to copy files from linux host to HP-UX host?

  - by Justin

  I'm having this issue where when I try to use sudo to rcp some files from a Linux host to an HP-UX host (note that the destination directory requires root access to write to), I get the following error from HP-UX's side: remshd: Login incorrect. I should note that the passwords for the Linux host and the HP-UX host are different. The command doesn't seem to give me a chance to enter the proper HP-UX password and automatically defaults to this error.

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• Cracking truecrypt files in minutes? Or just truecrypt harddrives in minutes?

  - by oshirowanen

  Apparently http://www.lostpassword.com/kit-forensic.htm can be used to crack truecrypt hard drive encryption. Has anyone tried it and is it possible to crack truecrypt files too with this software? Passware Kit Forensic, complete with Passware FireWire Memory Imager, is the first and only commercial software that decrypts BitLocker and TrueCrypt hard disks, and instantly recovers Mac and Windows login passwords of seized computers.

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• How to only allow particular programs to modify certain files?

  - by Mehrdad

  I want to make certain directories on my drives read-only except to particular programs who will have full permissions. For example, the Microsoft Word might be allowed to modify the files in my Documents folder, but other programs (such as the Command Prompt) would not be allowed to. I'm guessing this requires a file system filter driver of some sort, but I don't know which programs have this capability. Is there any (free) program that can do this for me?

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• How do I setup a cloud server to share and sync files on ESXi hosted environment?

  - by Manoj Agarwal

  I want to setup my private cloud network for my company for syncing and sharing files. Instead of using existing players like dropbox, google drive, amazon etc. I want to setup my own cloud infrastructure. The requirement is to easily share private data internally within the organization. I already have an ESXi based cloud environment, running several virtual machines in it. Will it be feasible and achievable?

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• where on disk is space allocated for new files inside LVM lv with ext4 file system?

  - by Jost

  I run a multi-disk server with LVM2. Several large disks serve as LVM2 physical volumes for one volume group, containing one logical volume formatted with ext4. Nothing fancy, just your standard linear setup. Recently an additional, very small disk was added as physical volume to that volume group and I expanded both the logical volume, and the ext4 file system therein onto that disk. This lv is used to store incremental backups using rsync and is only about 30% full, there have rarely been any files deleted from it, only incremental writes. Now this new HDD I added to the pre-existing volume group has unexpectedly died on me, and the volume group won't come up because it is missing one physical volume. As fate will have it, this WAS the "in an event of catastrophic failure on the primary server"-backup, the event happened, the boss is not happy, so this kinda has to work... According to this (Part 3): http://www.novell.com/coolsolutions/appnote/19386.html it is possible to trick LVM into starting anyway by creating a new pv with identical metadata to the failed disk, which will make the volume accessible, but of course leave giant holes in the file system. I have'n tried it yet, because it involves repairing (writing to) the file system which eliminates the possibility of trying other things if it fails. Now my question is: How does this setup actually allocate disk space for new data? Is it allocated linearly from beginning to end of PVs, in the order they were added to the vg? Is it striped somehow in order to increase performance/balance load? since this defective disk was added only later to an existing lvm2 vg and lv, containing a half-empty ext4, what are the chances that there was never any data written to the defective disk? In other words: what are the chances of recovering all my data, even without the defective disk, by just starting the volume group as-is? Am I about to go spend $1500 on having 250GB of empty space recovered when I send the defective disk in for repair? Is there a way to check without mounting the file system and opening the files, hoping they contain something other than zeros? (comparing addresses of used data blocks inside ext4 to address ranges that were on the missing pv, something like that, preferably easy to automate) I know bitwise-copying the entire lv into an image file before trying to repair the ext4 would probably be a good idea, but since this lv is very large and I just suffered major file system failure on several systems it is probably a luxury I don't have... Any suggestions?

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• Is it ok to work with files, while Time Machine is backing them up ?

  - by AntonAL

  Hi, Currently, my mac is backing all my data up. At this time, i working ... Is it ok, when i move/change files during backup ? Or, i will have side-effects later ? Thanks.

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• Clever way to automatically compress unused files on a Linux USB stick?

  - by Luke Stanley

  Surely there is a way to compress files that aren't frequently modified, to ensure low overheads in file access? Any recommendations? Note: I do not yet have noatime set, maybe file access data could be used, at least at first?

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• (Ubuntu - Lamp) Why exist in ubuntu lamp 2 php.ini files?

  - by meyosef

  Hi, Why exist in ubuntu lamp 2 php.ini files, and what function they doing? /etc/php5/cli/php.ini /etc/php5/apache2/php.ini Thanks

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• Any way to get the size of all the files in the recycle bin in Windows 7?

  - by Kris Erickson

  Any way to get the total size of files in the Recycle Bin in windows 7 without having to Select All and hit Properties or More Details? This was available in the Status bar in XP, is there any add-in or something that can give a brief summary of the Recycle bin in Windows 7?

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• which is the best choice of serving static media files of a website with heavy traffic?

  - by Mickey Shine

  Take a look at this list http://en.wikipedia.org/wiki/List_of_file_systems#Distributed_parallel_fault-tolerant_file_systems and which is the best choice for storing large number of static media files of a website? (among these distributed parallel fault tolerant file systems)

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• How can I import h.264 encoded MOV files into windows movie maker?

  - by rupello

  I have a couple of digital camcorders that output .MOV files encoded in h.264 video/AAC audio. They won't load into Windows Movie Maker or Windows Media Player - I guess I need to install some codecs. Where can I get these?

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• After 3 files transferred through sftp using FileZilla, the queue halts. What could be causing it?

  - by Randell

  And when it's happening, all I need to do is browse the internet using Chrome or Firefox, restart FileZilla, and start the queue of files with 32MB each. Then on the 4th file in the queue, the transfer halts or slows down. What could be causing it? I'm running on 64-bit Fedora 12. Buffalo WHR-G125.

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• How can I play my MP3 files through my stereo system?

  - by Joel Coehoorn

  Here's the situation. Like many others I have my entire CD collection ripped to my PC, along side other music I've acquired through iTunes or Amazon MP3. Also like many others the speakers at my PC are underpowered, and likely included in my monitor as an afterthought. This is fine for most use: system sounds, YouTube, etc. Even games sounds and music. But I'd like something a little better for when I really want to listen to music. And I have it; in the next room — barely 25 feet away as the crow flies — sits a nice 400 watts stereo system. The stereo supports MP3 CDs, so up to this point I've just kept a few CD-RW disks around to keep most of my collection available. But it's time to move on to something a little more sophisticated. What are my options for using the MP3 files available on my computer as an input for this stereo? Some notes: I want to be able to control what song the stereo is playing without having to go to the PC, including setting up and retrieving playlists. Ideally this should even be able to wake the PC from sleep mode to start playing. I primarily use Windows Media Player on the PC (which runs Windows Vista). However, the files themselves live on a server running Windows Server 2008, and so I could also install something on the server and run everything from there. The axillary input on the stereo is unfortunately limited to a 1/8 inch stereo mini-plug. I'm loath to run wires across two rooms, and I'm considering moving the stereo to the garage at some point. Therefore a wireless solution that can easily cover about 100 ft or so is preferred. I already have a Wi-Fi network ready, but it's secured so anything using Wi-Fi should make it easy to set up security. Bonus points for doing it in under $85 shipped at Amazon (I'm hoping to pay for this via $85 worth of Amazon gift cards). I know this a pretty tight budget, so just getting close is okay. Bonus points for something that remembers multiple profiles (keep my favorite songs separate from the wife's). Bonus points for a remote that can also replace my stereo remote, so I only need one device to control everything. I'm not holding my breath on this one given my price range, though. Bonus points if I can also use for Internet radio. Doing some research on my own as well. This looks like it'll do exactly what I want, but it lists at an outrageous $299: http://www.linksysbycisco.com/US/en/products/DMP100

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• Migrating user files, docs, etc. between XP machines.

  - by ProfKaos

  In 'moving' from one machine to another, I have backed up desktop, my documents, and .pst files. Am I missing anything significant, considering the user only really used Office and the browser?

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• How to Move Offline Files Cache in Windows 7?

  - by Portman

  On Vista systems, I've been using these instructions to relocate the "Offline Files Cache" from its default location of c:\csc. Works great. However, these instructions do not work on Windows 7. There is small discussion about the issue going on on TechNet but nobody yet has a solution. The problem is that the Migration Wizard has changed in Windows 7 and no longer provides a mechanism for doing this.

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• Need to determine how php files are being rendered in a LAMP configuration (CGI, FastCGI, or mod-php)

  - by Chris Williams

  How do I determine how our php files are being rendered in a simple LAMP configuration? phpinfo shows: -- Configure Command -- --enable-force-cgi-redirect --enable-fastcgi -- Server API -- CGI/FastCGI -- cgi-fcgi -- Directive Local Value Master Value cgi.check_shebang_line 1 1 cgi.fix_pathinfo 1 1 cgi.force_redirect 1 1 cgi.nph 0 0 cgi.redirect_status_env no value no value cgi.rfc2616_headers 0 0 fastcgi.logging 1 1

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