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  • System.Data.Sqlclient.Sqlexception: Line1 incorrect syntax ...

    - by marocanu2001
    Given a SqlConnection, a SqlCommand if you need to execute a stored procedure it is enough to specify the stored procedure name as the CommandText and it will work. Now the surprise is that if you also add parametres, you get this creepy error: SqlException: Line 1 incorrect syntax near [storedProcedureName]. The quick fix is to specify the CommandType to be StoredProcedure.

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  • Could I return a FileStream as a generic interface to a file?

    - by Eric
    I'm writing a class interface that needs to return references to binary files. Typically I would provide a reference to a file as a file path. However, I'm considering storing some of the files (such as a small thumbnail) in a database directly rather then on a file system. In this case I don't want to add the extra step of reading the thumbnail out of the database onto the disc and then returning a path to the file for my program to read. I'd want to stream the image directly out of the database into my program and avoid writing anything to the disc unless the user explicit wants to save something. Would having my interface return a FileStreamor even a Imagemake sense? Then it would be up to the implementing class to determine if the source of the FileStream or Image is a file on a disc or binary data in a database. public interface MyInterface { string Thumbnail {get;} string Attachment {get;} } vs public interface MyInterface { Image Thumbnail {get;} FileStream Attachment {get;} }

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  • Why not System.Void?

    - by Stewart
    I have no practical reason for knowing this answer, but I'm curious anyway... In C#, trying to use System.Void will produce a compilation error: error CS0673: System.Void cannot be used from C# -- use typeof(void) to get the void type object As I understood it, void is simply an alias of System.Void. So, I don't understand why 'System.Void' can't be used directly as you might with 'string' for 'System.String' for example. I would love to read an explanation for this! Incidentally, System.Void can be successfully used with the Mono compiler, instead of Microsoft's .Net, and there it appears equivalent to using the void keyword. This must therefore be a compiler-enforced restriction rather than a CLR restriction, right?

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  • Pointers to implementing a taxonomy system?

    - by petsagouris
    I am taking part in the development of a PHP CMS (yeah I know you are like, meeh). It is currently using simple tags for tagging content. What I want to do is push the whole thing to using Taxonomy but I am not sure on what to pay attention to, or how to go about structuring the whole vocabularies/terms. I'd love to be able to keep the user interaction close to that of the current simple tags and at the same time allow for more advanced usage by power users. The Drupal and the Wordpress taxonomy systems are being reviewed at the moment and they provide valuable resources. Nevertheless, it could be that someone has some simpler and more appropriate thoughts on this matter.

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  • How do I create an empty file in emacs?

    - by Singletoned
    How can I create an empty file from emacs, ideally from within a dired buffer? For example, I've just opened a Python module in dired mode, created a new directory, opened that in dired, and now need to add an empty __init__.py file in the directory. If I use C-x C-f __init__.py RET C-x C-s then emacs doesn't create the file because no changes have been made to it. I would have to type in the file, save it, delete my typing and then save it again for that to work. Thanks

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  • How to add ONLY system tray icon to application?

    - by badpanda
    I am developing an application that will be running behind the scenes in Windows and would like to put an icon in the system tray for troubleshooting purposes (simple way for users to tell if the app is running). There is no other UI for the application, and the icon does not need to have any functionality as of right now. All of the solutions I have found as of yet involve creating a form. I am wondering if there is a way to simply add a class to my current C# code that allows me to control the icon, rather than doing the whole 'make a form, set it to be invisible....' nonsense that seems to be the popular suggestion on the forums. Something along the lines of the way that UI control is done in say, Swing for Java. I would really appreciate any ideas! (Sorry if this is a n00b question...I haven't used C# before...) Thanks! badPanda

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  • Cannot upgrade system because of this error

    - by user292375
    Setting up mongodb-org-server (2.6.1) ... * Starting database mongod [fail] invoke-rc.d: initscript mongod, action "start" failed. dpkg: error processing mongodb-org-server (--configure): subprocess installed post-installation script returned error exit status 1 No apport report written because MaxReports is reached already dpkg: dependency problems prevent configuration of mongodb-org: mongodb-org depends on mongodb-org-server; however: Package mongodb-org-server is not configured yet. dpkg: error processing mongodb-org (--configure): dependency problems - leaving unconfigured No apport report written because MaxReports is reached already Errors were encountered while processing: mongodb-org-server mongodb-org E: Sub-process /usr/bin/dpkg returned an error code (1)

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  • Is a 1:* write:read thread system safe?

    - by Di-0xide
    Theoretically, thread-safe code should fix race conditions. Race conditions, as I understand it, occur because two threads attempt to write to the same location at the same time. However, what about a threading model in which a single thread is designed to write to a location, and several slave/worker threads simply read from the location? Assuming the value/timing at which they read the data isn't relevant/doesn't hinder the worker thread's outcome, wouldn't this be considered 'thread safe', or am I missing something in my logic?

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  • Ubuntu 14.04 Fatal Exception

    - by user286534
    I use Ubuntu 14.04, 64-bit. I installed Virtualbox and was testing another Linux OS (Deepin). My system froze and I could not get to a TTY session to reboot. I had to do a hard restart and when Ubuntu restarted I got various error codes one of which was "kernel panic - fatal exception in interrupt" Booting to Advance mode and attempting repairs did not work (fsck, grub repair, etc) I reinstalled Ubuntu and chose the option to keep my files intact. I can now access my system but many programs I have installed do not work. My question is; I have a Deja-Dup backup (but only of my Home directory), is it better to restore my backup files or do I have to reinstall all of my programs? The weird thing is, the programs I verified using the Software Center to see if they were installed are checked as installed, but won't appear in Dash.

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  • System doesn't boot due to a "[drm: drm_crtc_helper_set_config] * error * "

    - by Albin
    I have a problem with the new Ubuntu 12.10. It finished installing correctly, but when I restart my computer an error message appears: [15.854296] [drm: drm_crtc_helper_set_config] * error * failed to set mode on [CRTC: 10] * checking battery state [17.814209] [drm: drm_crtc_helper_set_config] * error * failed to set mode on [CRTC: 10] and that screen does not advance. I also tried booting from the recovery mode and it starts, but it's too slow loading windows and also shows me a window with an error message: Sorry Ubuntu 12.10 has experienced an internal error More Details: Executable path /usr/bin/xorg I have used Ubuntu since the 2008 version and never had this problem. I hope you can help me. Computer Specs: compaq sr2015la AMD sempron 2Gb. RAM 80Gb Hard Drive Translated from the original Spanish

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  • Implementing cache system in Java Web Application

    - by TGM
    I worked with JPA (Eclipselink implementation) and Hibernate. As I understand these two have great caching systems. I am interested in caching in a Web application and in order to better understand the process I'm trying to implement something on my own. Sadly, I cannot find any in depth documentation about this subject. I'm interested in things like high scalability, sharing memory on different machines and other important theoretical matters. Is there any tutorial or open project I could check out? Thank you! *LE: * I want to cache DB information in POJOs just like JPA or Eclipselink

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  • Is there a way of getting a file name and inserting into Matlab script?

    - by torr
    In a folder, I have both my .m file that contains the script and an imaging .dcm file that needs to be analyzed. Folder structure: Folder1/analysis.m Folder1/meas_dynamic_123.dcm My script (analysis.m) begins as follows: target =''; <== here should go the full path to the file + filename example: /Volumes/Data/Folder1/meas_dynamic_123.m txt = dir(target); // etc So I'm wondering if there is a way of when running analysis.m it will: automatically search the folder it's in, grab the full path + filename of file containing string dynamic in the name, insert its full path + name into target variable continue running the script Does anyone have any pointers on how to achieve this? Using ffpath?

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  • Adding icon to the system tray (notification area)

    - by Moma Antero
    Hello, I have a small audio recording application programmed with GTK/GDK. (see picture). And I would like to add a tray-icon for it so users can control the application window and recording from it. Adding a tray icon: I have planned to use the GtkStatusIcon class for this task. Ref: http://library.gnome.org/devel/gtk/2.11/GtkStatusIcon.html Is GtkStatusIcon the recommended solution that also works in Ubuntu's Unity and in the GNOME 3.0 desktop? I already googled a bit and found a good example on GtkStatusIcon. Could I also use Libindicator for this task? Ref: https://launchpad.net/libindicator

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  • How do I find out which process is locking a file using .NET?

    - by AJ
    I've seen several of answers about using Handle or Process Monitor, but I would like to be able to find out in my own code (C#) which process is locking a file. I have a nasty feeling that I'm going to have to spelunk around in the win32 API, but if anyone has already done this and can put me on the right track, I'd really appreciate the help. Update Links to similar questions How does one figure out what process locked a file using c#? Command line tool Across a Network Locking a USB device Unit test fails with locked file deleting locked file

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  • Is O_LARGEFILE needed just to write a large file?

    - by Daniel Trebbien
    Is the O_LARGEFILE flag needed if all that I want to do is write a large file (O_WRONLY) or append to a large file (O_APPEND | O_WRONLY)? From a thread that I read titled "Cannot write 2gb index file" on the CLucene-dev mailing list, it appears that O_LARGEFILE might be needed to write large files, but participants in that discussion are using O_RDWR, not O_WRONLY, so I am not sure.

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  • Is System.Windows.Media.RenderCapability the wrong source to detect the current render-mode

    - by happyclicker
    I use System.Windows.Media.RenderCapability.Tier to show the current render mode within a diagnostics panel of my app. If I force the app to change the render-mode through the following code HwndSource hwndSource = PresentationSource.FromVisual(visual) as System.Windows.Interop.HwndSource; HwndTarget hwndTarget = hwndSource.CompositionTarget; hwndTarget.RenderMode = renderMode; neither System.Windows.Media.RenderCapability.TierChanged fires, nor has the System.Windows.Media.RenderCapability.Tier property changed. However the changes are applied to the app. If I look with Perforator, the render mode has been changed to the desired mode. Although I’ve found at many locations that System.Windows.Media.RenderCapability.Tier can be used to detect the current render state (also msdn, see this), it seems, System.Windows.Media.RenderCapability only gives information about the capabilities and not about the current mode. That makes also sense if I look at the name of the class. Is there another source to know how an actual wpf-content is rendered or am I doing something wrong?

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  • How Content Management System is Useful

    Internet has open doors for small, medium as well as big business ventures to promote them online. The work of website development does not stop at mere web designing, but it has to be used best to i... [Author: Alan Smith - Computers and Internet - May 14, 2010]

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  • Read file structure into an array, but only specific files.

    - by dmackerman
    I have a directory structure that looks like this: /expandables - folder - folder - folder - folder - BannerInfo.txt - index.html Each one of the folder has the same exact stucture. One file named BannerInfo.txt and index.html. There are about 250 of these folders if that matters. I want to loop through these folders and store each of the index.html files into an array. Inside of the index.html file is just some simple HTML and Javascript of which I want to read into a string to be displayed later on. I'm struggling with how to filter out only the index.html file from the individual folders. The purpose of this is because I want to randomly select an index.html file and put the contents into a textarea. I thought I could do a simple array_rand() on the returned array and spit out the string. Any ideas?

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