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• apache/httpd responds slower under EL6.1 than EL5.6 (centos)

  - by daniel

  I've read through other threads on performance differences between RHEL6 and RHEL5, but none seem a tight match to mine. My issue manifests itself in slightly slower average response time (20ms) per request. I have about 10/10 servers of the same hardware spec with Cent6.1 and Cent5.6. The issue is consistent across the group. I am running Ruby on Rails with Passenger. Apache config is identical (checked out from the same SVN repo) Ruby and Passenger are identical builds. Application is identical and being served traffic round robin. mod_worker An interesting clue from server-status: The Cent6.1 servers have a steady 20-40 threads in the "Reading Request" state while the Cent5.6 servers have around 1. I'm graphing this so I can see it trend over time. I also have a bunch of much newer machines that are significantly faster and are running Cent6.1. They dust all the older machines in response time, but I can see they also have a steady 20-40 threads in the "Reading Request" state. This makes me believe I can get their response time down, if I can figure out what is holding up these requests. My gut is telling me that I need to tune some network setting in sysctl, but I haven't figured it out yet. Help is appreciated.

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• Calculating memory footprints using /proc/sysvipc/shm

  - by MarkTeehan

  This is for a SLES 10 database server. One of my servers runs three databases and three app servers; I am analyzing how their shared memory segments grow and shrink to avoid intermittent out-of-memory scenarios. "Top" is hot helpful for this since its calculations for RES and VIRT are inconsistent. I am doing this by matching up the contents of /proc/sysvipc/shm with memory usage reported by the database admin console. I do this by totaling up saving the contents of /proc/sysvipc/shm and then total up "bytes" for all of the segments for the offending userid. This is a large server with hundreds of segments and tens (or hundreds) of GB of allocated memory per userid. However it doesn't match up - the database management software claims to be using around 25% more memory than the total I calculate. Negligible swap space is in use, so I am ignoring that. I am running it as root so I am sure I see all shared memory segments. My question is : is all (significant) allocated memory recorded in /proc/sysvipc/shm, or is this only shared memory (*and not "un-shared" memory?). If this is incorrect, what is the correct way to calculate out the total allocated memory for each userid? Also: I believe doing a 'cat' on this file locks server IPC. I check it every 5 seconds - is it likely that this frequency could be problematic? Thanks! Mark Teehan Singapore

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• cause for mysql crash

  - by user1322092

  A cron job automatically restarted my mysql database. What's the cause for the crash, or can you suggest how to resolve or monitor. I would REALLY appreciate your input. 120715 14:38:58 mysqld started 120715 14:38:58 InnoDB: Started; log sequence number 0 411137570 120715 14:38:58 [Note] /usr/libexec/mysqld: ready for connections. Version: '5.0.95' socket: '/var/lib/mysql/mysql.sock' port: 3306 Source distribution 120715 15:14:21 [Note] /usr/libexec/mysqld: Normal shutdown 120715 15:14:23 InnoDB: Starting shutdown... 120715 15:14:25 InnoDB: Shutdown completed; log sequence number 0 411166467 120715 15:14:25 [Note] /usr/libexec/mysqld: Shutdown complete 120715 08:14:25 mysqld ended 120715 08:14:26 mysqld started 120715 8:14:26 InnoDB: Started; log sequence number 0 411166467 120715 8:14:26 [Note] /usr/libexec/mysqld: ready for connections. Version: '5.0.95' socket: '/var/lib/mysql/mysql.sock' port: 3306 Source distribution 121212 09:15:32 mysqld started InnoDB: The log sequence number in ibdata files does not match InnoDB: the log sequence number in the ib_logfiles! 121212 9:15:58 InnoDB: Database was not shut down normally! InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files... InnoDB: Restoring possible half-written data pages from the doublewrite InnoDB: buffer... 121212 9:17:28 InnoDB: Started; log sequence number 0 554145193 121212 9:17:57 [Note] /usr/libexec/mysqld: ready for connections. Version: '5.0.95' socket: '/var/lib/mysql/mysql.sock' port: 3306 Source distribution

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• Windows 7 product key, which is the valid one - in registry or on a sticker?

  - by me how

  I am not too familiar with the software licensing and how this all works, but I have a question regarding Windows 7 and partially Office - generally Microsoft products. I have been asked to assist our IT guy who wants to collect all the product IDs for Windows 7 and Office. I haven't been given much details how to go about it and how to collect it. After a bit of research I have decided to use a freeware that pulls the software licenses out of the registry. I thought that was the easiest and would provide the most accurate product IDs. I've used Belrac Avisor to obtain all the informations. It turns out that about 25 machines use the same product key. I have asked if the company has bought a commercial license or something but there isn't anyone available at the moment who could answer my question. I have told the IT guy that there are 25 machines using the same product key and asked if that is alright. He told me to go around and write the product keys from the sticker(label) on each machine. I am just not quite sure if that's the right approach specially that the numbers do not match.... So, now I see that the numbers aren't matching and my question is in terms of software licensing which is the VALID and correct product key to provide if ever questioned about software license? Is it the number on the sticker or is it the number stored in the registry?

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• Locate devices within a building

  - by ams0

  The situation: Our company is spread between two floors in a building. Every employee has a laptop (macbook Air or MacbookPro) and an iPhone. We have static DHCP mappings and DNS resolution so every mobile gets a name like employeeiphone.example.com, every macbook air gets a employeelaptop.example.com and every macbook pro gets a employeelaptop.example.com on the Ethernet interface (the wifi gets a dynamic IP from a small range dedicated for the purpose). We know each and every MAC address of phones and laptops, since we do DHCP static mapping (ISC DHCP server runs on linux). At each floor we have a Netgear stack of two switches, connected via 10GB fiber to each other. No VLANs so far. At every floor there are 4 Airport Extreme making a single SSID network with WPA2 authentication. The request: Our CTO wants to know who is present at which floor. My solution (so far): Every switch contains an table listing MAC address and originating port. On each switch stack, all the MAC addresses coming from the other floor are listed as coming on port 48 (the fiber link). So I came up with: 1) Get the table from each switch via SNMP 2) Filter out the ones associated with port 48 3) Grep dhcpd.conf, removing all entries not *laptop and not *iphone 4) Match the two lists for each switch, output in JSON or XML 5) present the results on a dashboard for all to see I wrote it in bash with a lot of awk and sed, it kinda works but I always have for some reason stale entries in the switch lookup tables, making it unreliable; some people may have put their laptop to sleep, their iphones drop connections after a while, if not woken up and so on..I searched left and right, we are prepared to spend a little on the project too (RFIDs?), does anybody do something similar? I can provide with the script if needed (although it's really specific to our switches and naming scheme). Thanks! p.s. perhaps is this a question for stackoverflow? please move if it so.

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• strange raid5 issue: [closed]

  - by 8steve8

  ok so ive had a 4x2TB(samsung HD204UI w/firmware patch) raid5 array working normally for about a month. It was in a h57 gigabyte motherboard using the intel raid with windows 7 x64. Today I got an intel h67 motherboard, so I upgraded the intel raid drivers to 10.1.0.1008 from 9.6.0.1014, and I'm not sure if i checked after a reboot, but it caused no problems. I swapped in the new dh67 motherboard, and my array status was "failed". 2 of the 4 drives listed themselves as members, while the other two drives listed themselves as non-members. I tried going back to the old h57 mobo, and downgrading the raid drivers, but the issue remains. It's not port dependent, 2 of the drives always come up as non-members regardless of what port or motherboard they are plugged into. the screenshot should show that the SNs match, which begs the question why the software doesn't realize the drive is a member of the array: http://img837.imageshack.us/img837/6145/both.png I'd like to know if anyone has experienced anything similar, and what should i do, can i force the drive to be recognized as a member (without wiping data)?

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• Why doesn't the value in /proc/meminfo seem to map exactly to the system RAM?

  - by Eric Asberry

  The values in /proc/meminfo for MemTotal don't make sense. As a human, eyeballing it, it seems to roughly correspond to the installed RAM, but for using it to display the installed RAM from an automated utility it appears to be inexact, and inconsistent. For a system with 1G of RAM, I would expect the MemTotal line to have a value of 1048576 - 1024*1024. But instead, I'm seeing 1029392. On another 4G box, I'm seeing 3870172, which is not a multiple of 1024, and it's not even close to 1029392*4. On an 8G box, I get 8128204, which again seems to have no correlation to the other values, nor is it a multiple of 1024. I'm trying to use this information to report the RAM on a status web page. My work-around is to just "round" it to the nearest 1G multiple, but I'd like to understand why these values seem inconsistent and don't match my expectations. Can somebody fill me in on what I'm missing here? EDIT: To expand on the accepted answer below.... The reference can be found here. Also of interest to me from that page, which explains the inconsistency, is this bit: meminfo: Provides information about distribution and utilization of memory. This varies by architecture and compile options. ...

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• I have to manually change the DNS suffix order every time I connect to VPN. Can I change this permanently or fix the problem somehow?

  - by CarlB

  Sorry in advance but I'm a programmer, not a network engineer, so I'm a noob at this stuff. Anyway, when I am not connected to VPN from my work PC at home, I have the following DNS suffixes listed (real domain names substituted): enterprise.org network.org company.com us.enterprise.org After connecting to VPN, one more DNS suffix is added to the very top of the list: problem-domain.com At this point, most network functions that I can normally perform when actually connected to the LAN in the office are unusable. I get error messages about the network paths not being found and what-not. Anyway, I played around with the suffixes and realized that if I just moved problem-domain.com down one spot to the second in the list, all the problems went away. Unfortunately, it returns to the top spot every time I reconnect, and I tend to get disconnected frequently. Is there something else I can do about this or should I just contact the IT department? I've had this problem before and they weren't able to resolve it but I suppose it would be worth trying again if I could get a different person on the job. What I don't understand is that I thought it didn't matter what order the suffixes were in? Isn't Windows supposed to go through each suffix until it finds a match (or has gone through all the suffixes)? Why is it quitting after the first one? Thanks in advance.

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• Windows Update broke Wirless driver - Can't get it working again

  - by private_meta

  I naively installed a driver update incoming from Windows Updates yesterday. That caused my Wifi on my Notebook (HP ELitebook 2740p) to break. The network is working as I tried it with my other mobile devices. When installing said driver, it told me that the installation failed. I tried to do a system restore, which did not help getting wifi connectivity back. The device said it was working, but did not get any wifi connection and did not discover any networks. What I tried next was to uninstall the device from my Device Manager and install either the current drivers found through windows, then I tried the same with the current drivers on the HP driver page. both of those attempts failed. It always tells me that installation failed when I uninstall and reinstall drivers. If I try to update the broken driver via internet, it tells me it is up to date, and in the device manager it still views as broken. Next, I 'played' around a bit and reinstalled drivers, and I managed to install drivers from 2012, and when trying to update drivers manually and picking drivers that match the device, it lets me choose between drivers from 2010 and 2014. 2014 would be the current one, picking the 2010 driver leads to the driver being accepted. However, no wireless network can be found. I'm pretty much out of ideas by now, short of reinstalling. The only option I can still think of was that the device broke at the exact moment I installed the new windows driver, but I find that a bit unlikely. Any help would be appreciated fixing this issue.

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• Unable to delete a file or take ownership on Win7x64

  - by Basic

  I'm a developer and as part of the build process, a Microsoft dll is copied to a certain folder. That file copy is now failing as the target can't be overwritten. I decided to delete it by hand (using an admin account but a non-elevated explorer) so browsed to the folder and attempted a delete. This failed (Require permission from the Administrator). The same applies when using an elevated explorer. So I tried Properties-Security-Advanced-Ownership The current owner is showing as Unable to display current owner. I can't take ownership (a simple Access Denied message with no elaboration). Elevated Command Prompt/PowerShell don't help either (both give an Access Denied in their own way). Process explorer shows no open handles on the file. Eventually, I booted to linux and deleted the file but what I'd like to know is what caused it? Security Essentials had no issues with the file. It's digitally signed by MS and the signatures match.

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• Powershell Script to help archive company email

  - by sec_goat

  I am attempting to use powershell to gather emails that pertain to a certain subject, so that these correspondences might be turned over to a legal department. I am having a couple of issues here that I would like some assistance getting past. I run the following command: get-mailbox -Database "Mailbox Database" | Export-Mailbox -ContentKeywords "Keywords To Search" -TargetMailbox "sec_goat" -TargetFolder EmailSearch -StartDate "01/13/2011 12:01:00 This has pretty much done what I want, and returned a boat load of emails, however it has also flooded my inbox with hundreds of blank calendars and contact lists. I realize now I should have used the exclusion on these folders, as well as a test environment (which we don't have). 1.How can I clean up this script to not include all the blank folders, contacts and calendars that DO NOT match the keywords search? 2.How do I clean up hundreds of blank contact lists and calendars in my mailbox without right clicking and deleting each one? EDIT: I edited the post to change the scope of the question. I think my focus is less on the legal perspective and more on the "How can I clean up my mess and make future archives less messy and painful?"

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• How to setup IIS 7.5 Reverse Proxy for quite a few internal servers - Server Farm?

  - by Tim Murphree

  I have tried for a few days, but I'm lost. Here's what I'm trying to do: I want to setup an IIS 7.5 as a Reverse Proxy for about 30 internal HTTP servers, located on my internal LAN. Everything is running on port 80. The internal servers are really IP based webcams. Here is scenario: www.mycamserver.com/cam1 192.168.1.101 www.mycamserver.com/cam2 192.168.1.102 and so on, until.. www.mycamserver.com/cam30 192.168.1.130 I have installed ARR and URL Rewrite. So far, I have managed, at one time, to seem to forward an incoming URL to an internal server, but the page would not fully load (error 404). Also, I setup a Server Farm, but it seems all traffic is now set to the first node on the Server Farm (192.168.1.101). However, at least the page loads and runs correctly. I simply want to do an exact match, for example, "cam14", and reverse-proxy / rewrite to a corresponding internal server address - "192.168.1.114".

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• Using u32 together with extension headers (how to jump over them?)

  - by bortzmeyer

  I'm trying to filter on some parts of the payload, for an IPv6 packet with extension headers (for instance Destination Options). ip6tables works fine with conditions like --proto udp or --dport 109, even when the packet has extension headers. Netfilter clearly knows how to jump over Destination Options to find the UDP header. Now, I would like to use the u32 module to match a byte in the payload (say "I want the third byte of the payload to be 42). If the packet has no extension headers something like --u32 "48&0x0000ff00=0x2800"` (48 = 40 bytes for the IPv6 header + 8 for the UDP header) works fine, If the packet has a Destination Options, it no longer matches. I would like to write a rule that will work whether the packet has Destination Options or not. I do not find a way to tell Netfilter to parse until the UDP header (something that it is able to do, otherwise --dport 109 would not work) then to leave u32 parse the rest. I'm looking for a simple way, otherwise, as BatchyX mentions, I could write a kernel module doing what I want.

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• Mac OS X - Time Machine backup fails verification - What can I do to save the history?

  - by usermac75

  Hi, How do I make Time Machine to make a new complete backup without losing older versions of backed up files? Verbose: I am using the Time Machine backup on my OS X (Snow Leopard) to backup the whole computer to an external drive. I especially like the "history", i.e. the feature that allows you to restore the older version of a file. Problem: I had some data corruption on my external backup drive, I repaired it with the System Tool for doing that, it found some faults. I had the disk tool repair the external drive. After that, the external drive was OK and I could use Time Machine again. I let Time Machine do one more backup. Now I made a verification according to http://superuser.com/questions/47628/verifying-time-machine-backups, namely along sudo diff -qr . $HOME/Desktop 2>&1 | tee $HOME/timemachine-diff.log However: After doing the command above, several differences and missing files were reported, approx. 200 files in sum. Whereas some of the missing files were cache or excluded directories, the differences do bother me, especially as some important documents from me are listed as differing. How can I make sure that the data on the external drive is synced correctly? Is it possible to have Time Machine to do a complete new backup without losing the history? Or to have Time Machine compare all files for differences and re-write all files that are different? Or can I set some flags on the files that do not match to have them copied again? (like the archive-flag in Windows/Dos). I'd rather not touch the files because I would like to keep the date of last change/date of creation) Thank you for your thoughts!

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• Ubuntu 9.10 won't reboot after replacing a failed drive

  - by user149041

  Hello Serverfault community. I hope someone can shed light on a peculiar problem I am having with an Ubuntu 9.10 server install. I am not a Linux expert but have the responsibility of fixing the box if something goes wrong. DOH! I have Ubuntu 9.10 server installed on on a desktop platform: Compaq Presario SR5027CL. There are two 1TB SATA drives configured in a RAID 1 array; I use the box as an email backup server for a small group of users. Last week one of the drives failed and was replaced with a new drive of the same type. The problem I have been having is getting the box to reboot after a restart or a shutdown halt. The OS and the RAID 1 array are on the same drives that make up the RAID 1 array. The replacement drive (sda) was added to the box and the partitions were created to match the existing good drive (sdb). The array is made up of sda1 and sdb1. I found an interesting point while checking the BIOS settings: there is a "HDD Boot Group Priority" section, and the new drive was selected as the "1. 3rd master"; the server wouldn't boot configured like that, but when I set the old drive to be "1. 4th master", the box will reboot. I'm checking some more things, but I would certainly appreciate any useful information. Thanks in advance.

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• Missing Edit Option on Silverlight 4 DataForm

  - by rip

  I’m trying out the Silverlight 4 beta DataForm control. I don’t seem to be able to get the edit and paging options at the top of the control like I’ve seen in Silverlight 3 examples. Has something changed or am I doing something wrong? Here’s my code: <UserControl x:Class="SilverlightApplication7.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="400" xmlns:dataFormToolkit="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data.DataForm.Toolkit"> <Grid x:Name="LayoutRoot" Background="White"> <dataFormToolkit:DataForm HorizontalAlignment="Left" Margin="10" Name="myDataForm" VerticalAlignment="Top" /> </Grid> </UserControl> public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); this.Loaded += new RoutedEventHandler(MainPage_Loaded); } void MainPage_Loaded(object sender, RoutedEventArgs e) { Movie movie = new Movie(); myDataForm.CurrentItem = movie; } public enum Genres { Comedy, Fantasy, Drama, Thriller } public class Movie { public int MovieID { get; set; } public string Name { get; set; } public int Year { get; set; } public DateTime AddedOn { get; set; } public string Producer { get; set; } public Genres Genre { get; set; } } }

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• Silverlight - Adding Text to Pushpin in Bing Maps via C#

  - by Morano88

  I was able to make my silverlight Bing map accepts Mousclicks and converts them to Pushpins in C#. Now I want to show a text next to the PushPin as a description that appears when the mouse goes over the pin , I have no clue how to do that. What are the methods that enable me to do this thing? This is the C# code : public partial class MainPage : UserControl { private MapLayer m_PushpinLayer; public MainPage() { InitializeComponent(); base.Loaded += OnLoaded; } private void OnLoaded(object sender, RoutedEventArgs e) { base.Loaded -= OnLoaded; m_PushpinLayer = new MapLayer(); x_Map.Children.Add(m_PushpinLayer); x_Map.MouseClick += OnMouseClick; } private void AddPushpin(double latitude, double longitude) { Pushpin pushpin = new Pushpin(); pushpin.MouseEnter += OnMouseEnter; pushpin.MouseLeave += OnMouseLeave; m_PushpinLayer.AddChild(pushpin, new Location(latitude, longitude), PositionOrigin.BottomCenter); } private void OnMouseClick(object sender, MapMouseEventArgs e) { Point clickLocation = e.ViewportPoint; Location location = x_Map.ViewportPointToLocation(clickLocation); AddPushpin(location.Latitude, location.Longitude); } private void OnMouseLeave(object sender, MouseEventArgs e) { Pushpin pushpin = sender as Pushpin; // remove the pushpin transform when mouse leaves pushpin.RenderTransform = null; } private void OnMouseEnter(object sender, MouseEventArgs e) { Pushpin pushpin = sender as Pushpin; // scaling will shrink (less than 1) or enlarge (greater than 1) source element ScaleTransform st = new ScaleTransform(); st.ScaleX = 1.4; st.ScaleY = 1.4; // set center of scaling to center of pushpin st.CenterX = (pushpin as FrameworkElement).Height / 2; st.CenterY = (pushpin as FrameworkElement).Height / 2; pushpin.RenderTransform = st; } }

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• Silverlight -RIA Services-This EntitySet of type <> does not support the 'Add' operation.

  - by user289082

  In Silverlight project I have this exception when I tried to Add a new object to a DataGrid when a button is clicked. In the DomainService class.. I know I have to implement the Add operation for the new Entity I'm putting, but how can I do that? I mean I did the class, the get method but how do I do the insert operation, I can't see my class in this.ObjectContext, so to whom I would be adding this new object, I have the next fragments of code: public partial class SisPer { [Key] public int Id { get; set; } public string Nombre_Sistema { get; set; } public string Nombre_Perfil { get; set; } public string Nivel { get; set; } public bool Estatus { get; set; } } public IQueryable<SisPer> Get_SisPer() { var query = from per in this.ObjectContext.Cat_Perfil join sis in this.ObjectContext.Cat_Sistema on per.Cat_Sistema.Id equals sis.Id select new SisPer() { Id = per.Id, Nombre_Sistema = sis.Nombre, Nombre_Perfil = per.Nombre, Nivel = per.Nivel, Estatus = per.Estatus }; return query; } public void InsertSisPer(SisPer sisper) { ?? I can't see this.ObjectContext.AddToSisPer(); } Plz Help!!

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• In WPF: Children.Remove or Children.Clear doesn't free objects

  - by Bart Roozendaal

  I create some UIElements from code behind and was anticipating the garbage collection to clear up stuff. However, the objects are not free-ed at the time I expected it. I was expecting them to be freeed at RemoveAt(0), but they are only freed at the end of the program. How can I make the objects be freed when removed from the Children collection of the Canvas? <Window x:Class="WpfApplication1.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300" MouseDown="Window_MouseDown"> <Grid> <Canvas x:Name="main" /> </Grid> </Window> The code behind is: public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } private void Window_MouseDown(object sender, MouseButtonEventArgs e) { if (main.Children.Count == 0) main.Children.Add(new MyControl() { Background = Brushes.Yellow, Width = 100, Height = 50 }); else main.Children.RemoveAt(0); } } public class MyControl : UserControl { ~MyControl() { Debug.WriteLine("Goodbye"); } }

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• How to upload a file from iPhone SDK to an ASP.NET vb.net web form using ASIFormDataRequest

  - by user289348

  Download http://allseeing-i.com/ASIHTTPRequest/. This works like a charm and is a good wrapper and handles things nicely. The make the request this way to the asp.net code listed below. Create a asp.net webpage that has a file control. IPHONE CODE: NSURL *url = [NSURL URLWithString:@"http://YourWebSite/Upload.aspx"]; ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url]; //These two must be added. ASP.NET Looks for them, if //they are not there in the request, the file will not upload [request setPostValue:@"" forKey:@"__VIEWSTATE"]; [request setPostValue:@"" forKey:@"__EVENTVALIDATION"]; [request setFile:@"PATH_TO_Local_File_on_Iphone/file/jpg" forKey:@"fu"]; [request startSynchronous]; This is the website code <%@ Page Language="VB" AutoEventWireup="false" CodeFile="Upload.aspx.vb" Inherits="Upload" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> <asp:FileUpload ID="fu" runat="server" EnableViewState="False" /> </div> <asp:Button ID="Submit" runat="server" Text="Submit" /> </form> </body> </html> //Code behind page Partial Class Upload Inherits System.Web.UI.Page Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim tMarker As New EventMarkers If fu.HasFile = True Then 'fu.PostedFile fu.SaveAs("E:\InetPub\UploadedImage\" & fu.FileName) End If End Sub End Class

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• ASP.NET MVC/LINQ: What's the proper way to iterate through a Linq.EntitySet in a View?

  - by Terminal Frost

  OK so I have a strongly-typed Customer "Details" view that takes a Customer object Model. I am using LINQ to SQL and every Customer can have multiple (parking) Spaces. This is a FK relationship in the database so my LINQ-generated Customer model has a "Spaces" collection. Great! Here is a code snippet from my CustomerRepository where I iterate through the Customer's parking spaces to delete all payments, spaces and then finally the customer: public void Delete(Customer customer) { foreach (Space s in customer.Spaces) db.Payments.DeleteAllOnSubmit(s.Payments); db.Spaces.DeleteAllOnSubmit(customer.Spaces); db.Customers.DeleteOnSubmit(customer); } Everything works as expected! Now in my "Details" view I want to populate a table with the Customer's Spaces: <% foreach (var s in Model.Spaces) { %> <tr> <td><%: s.ID %></td> <td><%: s.InstallDate %></td> <td><%: s.SpaceType %></td> <td><%: s.Meter %></td> </tr> <% } %> I get the following error: foreach statement cannot operate on variables of type 'System.Data.Linq.EntitySet' because 'System.Data.Linq.EntitySet' does not contain a public definition for 'GetEnumerator' Finally, if I add this bit of code to my Customer partial class and use the foreach in the view to iterate through ParkingSpaces everything works as expected: public IEnumerable<Space> ParkingSpaces { get { return Spaces.AsEnumerable(); } } The problem here is that I don't want to repeat myself. I was also thinking that I could use a ViewModel to pass a Spaces collection to the View, however LINQ already infers and creates the Spaces property on the Customer model so I think it would be cleanest to just use that. I am missing something simple or am I approaching this incorrectly? Thanks!

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• WPF binding to current class property

  - by AnD

  Hello, I have a problem that i cant solve :( I have a user control (xaml file and cs file) in xaml it's like: <UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" x:Class="Demo.CtrlContent" x:Name="UserControl" d:DesignWidth="598.333" d:DesignHeight="179.133" xmlns:Demo="clr-namespace:Demo" > <UserControl.Resources> <Storyboard x:Key="SBSmall"> <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="border" Storyboard.TargetProperty="(FrameworkElement.Width)"> <SplineDoubleKeyFrame KeyTime="00:00:01" Value="I WANT TO BIND VALUE HERE"/> </DoubleAnimationUsingKeyFrames> </Storyboard> </UserControl.Resources> <Border BorderBrush="#FFC2C0C1" CornerRadius="3,3,3,3" BorderThickness="1,1,1,1" RenderTransformOrigin="0.5,0.5" x:Name="border" Margin="1,3,1,3" HorizontalAlignment="Left" VerticalAlignment="Top" Width="300"> and .cs file: public partial class CtrlContent { private mindef W { get { return (mindef) Window.GetWindow(this); } } public double MedWidth { // I WANT BIND THIS VALUE GO TO STORYBOARD VALUE IN XAML ABOVE get { double actualW; if(W == null) actualW = SystemParameters.PrimaryScreenWidth; else actualW = W.WrapMain.ActualWidth; return actualW - border.Margin.Left - border.Margin.Right; } } public double SmlWidth { get { return MedWidth / 2; } } public CtrlContent () { this.InitializeComponent(); } public CtrlContent (Content content) { this.InitializeComponent(); Document = content; } } in my .cs file there's a property called MedWidth, and in XAML file there's a storyboard called: SBSmall I want to bind my storyboard value to my property in class ctrlcontent. *the idea is, the storyboard is an animation to resize the control to a certain width depends on its parent container (the width is dynamic) anybody? please :) thanks!

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• How to change StartupUri of WPF Application?

  - by Akash Kava

  I am trying to modify App.cs and load the WPF XAML files from code behind but its not working as it should. No matter whatever I try to set as StartupUri it doesnt start, the program quits after this. public partial class App : Application { protected override void OnStartup(StartupEventArgs e) { base.OnStartup(e); LoginDialog dlg = new LoginDialog(); if (dlg.ShowDialog() != true) return; switch (dlg.ChoiceApp) { case ChoiceApp.CustomerEntry: StartupUri = new Uri("/MyApp;component/Forms/CustomerEntry.xaml", UriKind.Relative); break; case ChoiceApp.VendorEntry: StartupUri = new Uri("/MyApp;component/Forms/VendorEntry.xaml", UriKind.Relative); break; } } } Now I even did trace and found out that LoginDialog is working correctly and is returning values correctly but setting "StartupUri" does not work. I checked in reverse assembly that DoStartup method of App gets called after OnStartup, so technically my StartupUri must load, but it doesnt, in App.xaml startup uri is not at all defined. Note: Bug Confirmed I noticed that ShowDialog sets Application.MainWindow and when dialog ends, it sets it back to null, and because of this setting StartupUri does not work after calling Modal Dialog in OnStartup or Startup event. There is no error or exception about invalid uri or anything like that. This method works without DialogBox being called in Startup event or OnStartup, i think calling showdialog on this method causes something like its mainwindow being set to expired window and it shuts down after this.

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• Linq The specified type 'string' is not a valid provider type.

  - by Joe Pitz

  Using Linq to call a stored procedure that passes a single string, The stored procedure returns a data set row that contains a string and an int. Code: PESQLDataContext pe = new PESQLDataContext(strConnStr); pe.ObjectTrackingEnabled = false; gvUnitsPassed.DataSource = pe.PassedInspection(Line); gvUnitsPassed.DataBind(); pe.dispose(); When the code runs an exception gets called below: The exception is thrown at the IExecuteResult result = statement: Enclosed is my result class in the designer.cs file. [Function(Name = "dbo.PassedInspection")] public ISingleResult<PassedInspectionResult> PassedInspection([Parameter(Name = "Model", DbType = "VarChar(4)")] string model) { IExecuteResult result = this.ExecuteMethodCall(this, ((MethodInfo)(MethodInfo.GetCurrentMethod())), model); return ((ISingleResult<PassedInspectionResult>)(result.ReturnValue)); } public partial class PassedInspectionResult { private string _Date; private int _Passed; public PassedInspectionResult() { } [Column(Storage = "_Date", DbType = "string NULL")] public string Date { get { return this._Date; } set { if ((this._Date != value)) { this._Date = value; } } } [Column(Storage = "_Passed", DbType = "Int NULL")] public int Passed { get { return this._Passed; } set { if ((this._Passed != value)) { this._Passed = value; } } } } } I have other stored procedures with similar arguments that run just fine. Thanks

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• Loading GeckoWebBrowser Exceptions

  - by Mostafa Mahdieh

  I get a strange exception when a window containing a GeckoWebBrowser is loaded. This is the exception message: An unhandled exception of type System.Runtime.InteropServices.COMException occurred in Skybound.Gecko.dll Additional information: Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)) This is the windows code: public partial class AddContents : Form { String path; public AddContents(String path) { this.path = path; InitializeComponent(); } private void exitToolStripMenuItem_Click(object sender, EventArgs e) { this.Close(); } private void AddContents_Load(object sender, EventArgs e) { geckoWebBrowser1.Navigate(path); } private int selId = 1; private bool updateMode = false; private void timer1_Tick(object sender, EventArgs e) { if (updateMode) update(); } private void geckoWebBrowser1_DocumentCompleted(object sender, EventArgs e) { timer1.Enabled = true; updateMode = true; } private void treeView1_AfterSelect(object sender, TreeViewEventArgs e) { geckoWebBrowser1.Navigate("javascript:scrollToBookmark(" + treeView1.SelectedNode.Tag + ")"); TreeNode selected = treeView1.SelectedNode; TreeNode prev = selected.PrevNode; TreeNode next = selected.PrevNode; if (prev == null) upButton.Enabled = false; if (next == null) downButton.Enabled = false; } private void update() { geckoWebBrowser1.Navigate("javascript:updateSelText()"); GeckoElement el = geckoWebBrowser1.Document.GetElementById("sel_result_991231"); if (el != null) { textBox1.Text = el.InnerHtml; addButton.Enabled = !textBox1.Text.Trim().Equals(String.Empty); } } private void textBox1_Enter(object sender, EventArgs e) { updateMode = false; } private void geckoWebBrowser1_DomMouseDown(object sender, GeckoDomMouseEventArgs e) { updateMode = true; update(); } private void geckoWebBrowser1_DomMouseUp(object sender, GeckoDomMouseEventArgs e) { updateMode = false; } private void addButton_Click(object sender, EventArgs e) { geckoWebBrowser1.Navigate("javascript:addIdToSel()"); TreeNode t = new TreeNode(textBox1.Text); t.Tag = selId; treeView1.Nodes.Add(t); selId++; } }

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