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• How can I avoid the overflow when wheel scolling WPF DataGrid

  - by Jan Bannister

  When I use the mouse wheel to scroll the WPF Toolkit DataGrid on a Vista 64 Machine I get a cryptic low level error: at System.IntPtr.op_Explicit(IntPtr value) at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) I logged an issue on CodePlex. But has anyone found a way to resolve this already?

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• SQL: ATER COLUMN to shorter CHAR(n) type

  - by Rising Star

  I'm working with MS SQL SERVER 2003. I want to change a column in one of my tables to have fewer characters in the entries. This is identical to this question: http://stackoverflow.com/questions/2281336/altering-a-table-column-to-accept-more-characters except for the fact that I want fewer characters instead of more. I have a column in one of my tables that holds nine-digit entries. A developer previously working on the table mistakenly set the column to hold ten-digit entries. I need to change the type from CHAR(10) to CHAR(9). Following the instructions from the discussion linked above, I wrote the statement ALTER TABLE [MY_TABLE] ALTER COLUMN [MY_COLUMN] CHAR(9); This returns the error message "String or binary data would be truncated". I see that my nine-digit strings have a space appended to make them ten digits. How do I tell SQL Server to discard the extra space and convert my column to a CHAR(9) type?

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• Why OpenGL ES texture mapping is very slow?

  - by Cinar

  I have an Android application that displays VGA (640x480) frames using OpenGL ES. The application reads each frame from a movie file and updates the texture accordingly. My problem is that, it is taking almost 30 ms. to draw each frame using OpenGL. Similar test using the Canvas/drawBitmap was around 6 ms on the same device. I'm following the same OpenGL calls that VLC Media Player is using, so I'm assuming that those are optimized for this purpose. I just wanted to hear your thoughts and ideas about it?

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• Why ping another innet machine from MacBook get netgate's ip address?

  - by Xinwang

  I have three machine in my home network connected by a wireless router. One is server installed linux at 192.168.1.1, another is Thinkpad with MS Windows XP at 192.168.1.2, last one is MacBook Pro with Mac OS X 10.6.3 at 192.168.1.3. When I ping the Linux Server from Thinkpad (MS Windows XP) I can get the correct ip address, but when I ping it from Mac I get the global address of my router, like 61.135.181.175. Could you tell me why this happen? And how do I get same ping result on Mac and Windows. Thanks

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• How can I use my multiple cored dedicated server to run my java application?

  - by Delta

  I have a game built in a java environment and I use JVM. I have 4 cores @ 2.4Ghz and my server is only using one of those cores... I've tried and searched and I still have no guides to setup multiple cores to run the game like, say 1 core for running the character saving + loading, and 1 core for the server itself, and 1 core for a helper to help other cores that need more power. I don't even know if this is possible but this is all in java the operating machine is windows server 2003 and I've tried so hard I just don't know what to do. May someone please help me! Thank you so much!

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• SQL Server: bcp utility: login fails

  - by Patrick

  Microsoft Windows [Version 5.2.3790] (C) Copyright 1985-2003 Microsoft Corp. C:\Documents and Settings\Administrator>bcp "SELECT TOP 1000 * FROM SOData.dbo.E xperts" queryout c:\customer3.txt -n -t -UAdministrator -P -SDNAWINDEV SQLState = 28000, NativeError = 18456 Error = [Microsoft][SQL Server Native Client 10.0][SQL Server]Login failed for u ser 'Administrator'. or.. without -P flag C:\Documents and Settings\Administrator>bcp "SELECT TOP 1000 * FROM SOData.dbo.E xperts" queryout c:\customer3.txt -n -t -UAdministrator -P -SDNAWINDEV SQLState = 28000, NativeError = 18456 Error = [Microsoft][SQL Server Native Client 10.0][SQL Server]Login failed for u ser 'Administrator'. or, without -P flag, and typing the password.. is the same C:\Documents and Settings\Administrator>bcp "SELECT TOP 1000 * FROM SOData.dbo.E xperts" queryout c:\customer3.txt -n -t -UAdministrator -SDNAWINDEV Password: SQLState = 28000, NativeError = 18456 Error = [Microsoft][SQL Server Native Client 10.0][SQL Server]Login failed for u ser 'Administrator'.

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• How to search SVN repository for a file when I'm not sure where I put it?

  - by Chris Thornton

  Co-worker is sure he checked in a file: foo_oustanding.dpr but isn't sure when/where (we have lots of "tools" and "utility" ancillary branches, lots of project branches, etc.. I need a way to search the entire repository for this file. I could check the whole source tree out to my HD, but that would take several hours. Is there a faster way? I tried the Repo Browser (Tortoise) and it didn't seem to have a search. I also thought about dumping the log, from the beginning of time. But that seemed silly. I have, at my disposal: Tortoise SVN 1.6 Subversion 1.5.6 running on Apache It runs on a Windows 2003 server. Remote Desktop access to the server, with admin rights. Thanks for any ideas.

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• Stop 2 identical queries from executing almost simultaneously?

  - by James Simpson

  I have developed an AJAX based game where there is a bug caused (very remote, but in volume it happens at least once per hour) where for some reason two requests get sent to the processing page almost simultaneously (the last one I tracked, the requests were a difference of .0001 ms). There is a check right before the query is executed to make sure that it doesn't get executed twice, but since the difference is so small, the check hasn't finished before the next query gets executed. I'm stumped, how can I prevent this as it is causing serious problems in the game. Just to be more clear, the query is starting a new round in the game, so when it executes twice, it starts 2 rounds at the same time which breaks the game, so I need to be able to stop the script from executing if the previous round isn't over, even if that previous round started .0001 ms ago.

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• Scheduled task username changed

  - by Ernst

  Hi, I created a user on our exchange server, but later changed the username. Now, when I create a scheduled task for that user, and change it's settings (run only when logged on), the username is automatically changed back to the old username. What's causing this and how do I make sure the correct, new username is used for the task (otherwise it won't run), security settings are okay. I did already log in with a different user to delete the profile on the computer and tried again with this user to no avail. The OS is windows xp, the exchange server is on windows server 2003. Thanks

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• How to invoke a delegate with a null parameter?

  - by Rodney Burton

  I get a null exception if I try to pass a null parameter to a delegate during an invoke. Here's what the code looks like: public void RequestPhoto() { WCF.Service.BeginGetUserPhoto(Contact.UserID, new AsyncCallback(RequestPhotoCB), null); } public void RequestPhotoCB(IAsyncResult result) { var photo = WCF.Service.EndGetUserPhoto(result); UpdatePhoto(photo); } public delegate void UpdatePhotoDelegate(Binary photo); public void UpdatePhoto(Binary photo) { if (InvokeRequired) { var d = new UpdatePhotoDelegate(UpdatePhoto); Invoke(d, new object[] { photo }); } else { var ms = new MemoryStream(photo.ToArray()); var bmp = new Bitmap(ms); pbPhoto.BackgroundImage = bmp; } } The problem is with the line: Invoke(d, new object[] { photo }); If the variable "photo" is null. What is the correct way to pass a null parameter during an invoke? Thanks!

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• How do I display non-normalized data in a hierarchical structure?

  - by rofly

  My issue is that I want to display data in a hierarchal structure as so: Democrat County Clerk Candidate 1 Candidate 2 Magistrate Candidate 1 Candidate 2 Candidate 3 But I'm retrieving the dataset like this: Party | Office | Candidate Democrat | County Clerk | Candidate 1 Democrat | County Clerk | Candidate 2 Democrat | Magistrate | Candidate 1 Democrat | Magistrate | Candidate 2 Democrat | Magistrate | Candidate 3 I planned on using nested repeaters, but I need a distinct value of Party, and then distinct values of office name within that party in order to do it. Are there any .NET functions to easily do what I'm attempting to? Would there be a better way of displaying the information other than repeaters? Thanks in advance!

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• How to create a RESTful web service in asp.net?

  - by jonhobbs

  Hi Guys, I simply want to create a fairly basic REST service, so that I can expose some of the data in my asp.net/SQL server application to the outside works, like this..... http://domain.com/api/offices - would return an xml set of office locations. http://domain.com/api/offices/15 - would return all the details of office 15. It's all fairly standard stuff (including basic authentication) but there seem to be several ways to achieve this using Microsoft technologies and I don't really know where to start. These seem to be the options... 1) WCF 2) ASP.NET MVC 3) ADO.NET Data Services 4) Rest Starter Kit project templates? Which of these is the easiest and most "up-to-date" solution to creating a web service?

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• How can I match end-of-line multiple times in a regex without interpolation?

  - by harschware

  Hi, if I have a input with new lines in it like: [INFO] xyz [INFO] How can I pull out the xyz part? I tried a pattern like /^\[INFO\]$(.*?)$\[INFO\]/ms, but perl gives me: Use of uninitialized value $\ in regexp compilation at scripts\t.pl line 6. I've been trying things to get interpolation to stop like using qr// but alas, no love. EDIT: The key is that the end-of-line anchor is a dollar sign but at times it may be necessary to intersperse the end-of-line anchor through the pattern. If the pattern is interpolating then you might get problems such as uninitialized $\. For instance an acceptable solution here is /^\[INFO\]\s*^(.*?)\s*^\[INFO\]/ms but that does not solve the crux of the first problem. I've changed the anchors to be ^ so there is no interpolation going on, and with this input I'm free to do that. But what about when I really do want to reference EOL with $ in my pattern? How do I get the regex to compile?

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• Bind can only work for the DNS server inside zone

  - by Bob

  I got a big problem when I added a new zone to my current Bind configuration. ===============/etc/named.conf=============== include "/etc/rndc.key"; controls { inet 127.0.0.1 port 953 allow { 127.0.0.1; } keys { "rndckey"; }; }; acl "trusted" { 127.0.0.1; 208.43.81.157; 69.4.236.88; }; options { directory "/var/named"; allow-query { any; }; recursion yes; allow-recursion { trusted; }; }; zone "." { type hint; file "root.hints"; }; zone "2comu.com" { type master; file "2comu.com.db"; allow-update { none; }; }; zone "usa-diamond.com" { type master; file "usa-diamond.com.db"; allow-update { none; }; }; ===============/var/named/2comu.com.db=============== $TTL 86400 @ IN SOA ns1.2comu.com. root.2comu.com. ( 2011011101 3600 300 3600000 3600 ) IN NS ns1.2comu.com. IN NS ns2.2comu.com. IN MX 10 email.2comu.com. ns1.2comu.com. IN A 208.43.81.157 ns2.2comu.com. IN A 69.4.236.88 www.2comu.com. IN A 208.43.81.157 ftp.2comu.com. IN A 208.43.81.157 email.2comu.com. IN A 208.43.81.157 ===============/var/named/usa-diamond.com=============== $TTL 86400 @ IN SOA ns1.2comu.com. root.usa-diamond.com. ( 2011011115 3600 300 3600000 3600 ) IN NS ns1.2comu.com. IN NS ns2.2comu.com. www.usa-diamond.com. IN A 208.43.81.157 ================================================================ All of the configurations inside domain 2comu.com work well. But when www.usa-diamond.com doesn't work at all. When I tried "dig +trace www.usa-diamond.com", I got the following message ================================================================ ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2 <<>> +trace usa-diamond.com ;; global options: printcmd . 517603 IN NS c.root-servers.net. . 517603 IN NS d.root-servers.net. . 517603 IN NS e.root-servers.net. . 517603 IN NS f.root-servers.net. . 517603 IN NS g.root-servers.net. . 517603 IN NS h.root-servers.net. . 517603 IN NS i.root-servers.net. . 517603 IN NS j.root-servers.net. . 517603 IN NS k.root-servers.net. . 517603 IN NS l.root-servers.net. . 517603 IN NS m.root-servers.net. . 517603 IN NS a.root-servers.net. . 517603 IN NS b.root-servers.net. ;; Received 500 bytes from 208.43.81.157#53(208.43.81.157) in 0 ms com. 172800 IN NS j.gtld-servers.net. com. 172800 IN NS d.gtld-servers.net. com. 172800 IN NS e.gtld-servers.net. com. 172800 IN NS i.gtld-servers.net. com. 172800 IN NS f.gtld-servers.net. com. 172800 IN NS m.gtld-servers.net. com. 172800 IN NS b.gtld-servers.net. com. 172800 IN NS k.gtld-servers.net. com. 172800 IN NS l.gtld-servers.net. com. 172800 IN NS c.gtld-servers.net. com. 172800 IN NS h.gtld-servers.net. com. 172800 IN NS a.gtld-servers.net. com. 172800 IN NS g.gtld-servers.net. ;; Received 505 bytes from 192.33.4.12#53(c.root-servers.net) in 3 ms usa-diamond.com. 172800 IN NS ns1.2comu.com. usa-diamond.com. 172800 IN NS ns2.2comu.com. ;; Received 107 bytes from 192.48.79.30#53(j.gtld-servers.net) in 177 ms ;; Received 33 bytes from 208.43.81.157#53(ns1.2comu.com) in 0 ms ========================================================================= It seems I can't get any answer from ns1.2comu.com. Can anyone give some suggestions? Thanks a lot. Bob

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• C++ this as thread parameter, variables unavailable

  - by brecht

  I have three classes: class Rtss_Generator { int mv_transfersize; } class Rtss_GenSine : Rtss_Generator class Rtss_GenSineRpm : Rtss_GenSine Rtss_GenSine creates a thread in his constructer, it is started immediatly and the threadfunction is off-course declared static, waiting for an event to start calculating. the problem: all the variables that are accessed through the gen-pointer are 0, but it does not fail. Also, this-address in the constructer and the gen-pointer-address in the thread are the same, so the pointer is ok. this code is created and compile in visual studio 6.0 service pack 2003 ORIGINAL CODE no thread Rtss_GenSine::getNextData() { //[CALCULATION] //mv_transferSize is accessible and has ALWAYS value 1600 which is ok } NEW CODE Rtss_GenSine::Rtss_GenSine() { createThread(NULL, threadFunction, (LPVOID) this,0,0); } Rtss_GenSine::getNextData() { SetEvent(startCalculating); WaitForSingleObject(stoppedCalculaing, INFINITE); } DWORD Rtss_GenSine::threadFunction(LPVOID pParam) { Rtss_GenSine* gen = (Rtss_GenSine*) pParam; while(runThread) { WaitForSingleObject(startCalculating, INFINITE); ResetEvent(startCalculating) //[CALCULATION] //gen->mv_transferSize ---> it does not fail, but is always zero //all variables accessed via the gen-pointer are 0 setEvent(stoppedCalculaing) } }

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• Performance optimization for SQL Server: decrease stored procedures execution time or unload the ser

  - by tim

  We have a web service which provides search over hotels. There is a problem with performance: a single request to the service takes around 5000 ms. Almost all of the time is spent in database by executing storing procedures. During the request our server (mssql2008) consumes ~90% of the processor time. When 2 requests are made in parallel the average time grows and is around 7000 ms. When number of request is increasing, the average time of response is increasing as well. We have 20-30 requests per minute. Which kind of optimization is the best in this case having in mind that the goal is to provide stable response time for the service: 1) Try to decrease the stored procedures execution time 2) Try to find the way how to unload the server It is interesting to hear from people who deal with booking sites.

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• Why compressed xps are corrupt?

  - by Gio

  compressed xps documents do not pass isxps.exe test and do not display in xpsviewer. i'm using Windows 7 and vs2010. Dim ms = New MemoryStream() Dim P As Package = Package.Open(ms, FileMode.Create, FileAccess.ReadWrite) Dim DocumentUri As Uri = New Uri("pack://document.xps") PackageStore.AddPackage(DocumentUri, P) Dim document As XpsDocument = New XpsDocument(P, CompressionOption.Maximum, DocumentUri.AbsoluteUri) If i change CompressionOption.Maximum to CompressionOption.None all works perfectly. IsXps.exe says "Unable to open Zip archive Error code: 0x8000FFFF", same with default W7 XpsViewer. what i'm doing wrong? (i've also installed latest 7zip program, but i do not think that it may corrupt the default windows zip capability......or not?)

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• md5hash performance with big files for check copy files in shared folder

  - by alhambraeidos

  Hi all, My app Windows forms .NET in Win XP copy files pdfs in shared network folder in a server win 2003. Admin user in Win2003 detects some corrupt files pdfs, in that shared folder. I want check if a fileis copied right in shared folder Andre Krijen says me the best way is to create a MD5Hash of original file. When the file is copied, verify the MD5Hash file of the copied one with the original one. I have big pdf files. apply md5 hash about big file, any performance problem ?? If I only check (without generate md5 hash) Length of files (original and copied) ?? Thanks in advanced.

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• Revoke client X509 certificate

  - by Tom

  Hi, I have ASP.NET web service on windows server 2003. I have own certificate authority. I use own client certificate on authentification in web service. I make client certificate. I call web service, everything is ok. Then I revoke this certificate in certification authority. Certificate is in Revoked certificate. I call web service with this certificate, but web service verify this certificate as good, but this certificate is between revoked. I don't know why? Anybody help me please? I use this method on verify certificate. X509Certificate2.Verify Method I don't get any exception, certificate is between revoked, but web service verify this certificate as good.

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• Why does the VBA Editor open on its own sometimes?

  - by Kevin Finn

  I've created a small script in Outlook 2003 VBA that watches for new appointments, and sets them to tentative and no reminder as I create them. However, I now find that seemingly at random, the VBA editor will open itself. It doesn't happen when I actually use the new script, but it did happen this morning when I un-hibernated my laptop, for example. The editor doesn't pop up any runtime errors or highlight any lines in the script, it's just there as if I had pressed Alt-F11 to launch it. Sometimes I close other apps and see that it's been sitting back there for a while. This behavior has only been occurring since I created this new script. Any ideas why this would occur? Thanks!

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• Using XCode and instruments to improve iPhone app performance

  - by MrDatabase

  I've been experimenting with Instruments off and on for a while and and I still can't do the following (with any sensible results): determine or estimate the average runtime of a function that's called many times. For example if I'm driving my gameLoop at 60 Hz with a CADisplayLink I'd like to see how long the loop takes to run on average... 10 ms? 30 ms etc. I've come close with the "CPU activity" instrument but the results are inconsistent or don't make sense. The time profiler seems promising but all I can get is "% of runtime"... and I'd like an actual runtime.

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• C# ListBox hide vertical scrollbar

  - by Codeffect

  How to hide the vertical scroll bar of a Listbox that is present inside a div. <td class="ctrlForm"> <div id="lstQueriesDiv" style="OVERFLOW:auto; Width: 650px; height:167px;" > <asp:ListBox ID="lstQueries" runat="server" CssClass="cssLstQueries" Rows="9" ></asp:ListBox> </div> </td> .cssLstQueries{ Width:auto; overflow: hidden; -ms-overflow-y : hidden; -ms-overflow-x : hidden; }

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• Online chart editor

  - by Alexander Gladysh

  I love to use Google Documents as MS Word and MS Excel replacements for online collaboration. However, now I need to discuss architecture layout for my software. Nothing too fancy, perhaps a little (pseudo-)UML, but mostly basic shapes (rectangles, ellipses etc.) with labels, connected by thin lines or arrows. In olden Windows times I'd go for Visio, and be happy. But now I want to use online tool. Preferably free. No need for code reverse engineering etc., just plain assisted vector drawing. Any advice? What do you use?

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• Problem with datagridvieew in vb.net

  - by user225269

  I'm trying to add a datagridview in vb.net, but it does not allow me to change the connection string or the database that should be imported to connect to it. The only thing that I'm seeing is the previous ms sql database that I connected with datagridview and everytime I click the new connection, the window closes and it leaves me with the datagridview with the previous connection that I have. And its not applicable because, now I want to connect it with mysql. Not ms sql. Its some sort of a cache like feature in vb.net, how do I get rid of it. so that I can add the new connection for mysql? Do I need to reinstall visual studio 2008?

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• what database should i choose ?

  - by MemoryLeak

  I use winforms to develop a desktop application, and right now I plan to use SQL server express, but the problem is, if i use sql server express, then the installation is much trouble, i need to install sql server first, and install my own applicaiton. Then I tried to use access 2003 as my database, then I only need to copy the mdb file with my application. But the access 's function is not that strong, the text length is limited to 255 byte. Is there any other database solution, which is easy to integrate to my application, and easy to install after i develop my application ? Many many desktop application have their own database, and easy to install and easy to use, what database do they use ?

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