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  • SQL ADO.NET shortcut extensions (old school!)

    - by Jeff
    As much as I love me some ORM's (I've used LINQ to SQL quite a bit, and for the MSDN/TechNet Profile and Forums we're using NHibernate more and more), there are times when it's appropriate, and in some ways more simple, to just throw up so old school ADO.NET connections, commands, readers and such. It still feels like a pain though to new up all the stuff, make sure it's closed, blah blah blah. It's pretty much the least favorite task of writing data access code. To minimize the pain, I have a set of extension methods that I like to use that drastically reduce the code you have to write. Here they are... public static void Using(this SqlConnection connection, Action<SqlConnection> action) {     connection.Open();     action(connection);     connection.Close(); } public static SqlCommand Command(this SqlConnection connection, string sql){    var command = new SqlCommand(sql, connection);    return command;}public static SqlCommand AddParameter(this SqlCommand command, string parameterName, object value){    command.Parameters.AddWithValue(parameterName, value);    return command;}public static object ExecuteAndReturnIdentity(this SqlCommand command){    if (command.Connection == null)        throw new Exception("SqlCommand has no connection.");    command.ExecuteNonQuery();    command.Parameters.Clear();    command.CommandText = "SELECT @@IDENTITY";    var result = command.ExecuteScalar();    return result;}public static SqlDataReader ReadOne(this SqlDataReader reader, Action<SqlDataReader> action){    if (reader.Read())        action(reader);    reader.Close();    return reader;}public static SqlDataReader ReadAll(this SqlDataReader reader, Action<SqlDataReader> action){    while (reader.Read())        action(reader);    reader.Close();    return reader;} It has been awhile since I've really revisited these, so you will likely find opportunity for further optimization. The bottom line here is that you can chain together a bunch of these methods to make a much more concise database call, in terms of the code on your screen, anyway. Here are some examples: public Dictionary<string, string> Get(){    var dictionary = new Dictionary<string, string>();    _sqlHelper.GetConnection().Using(connection =>        connection.Command("SELECT Setting, [Value] FROM Settings")            .ExecuteReader()            .ReadAll(r => dictionary.Add(r.GetString(0), r.GetString(1))));    return dictionary;} or... public void ChangeName(User user, string newName){    _sqlHelper.GetConnection().Using(connection =>         connection.Command("UPDATE Users SET Name = @Name WHERE UserID = @UserID")            .AddParameter("@Name", newName)            .AddParameter("@UserID", user.UserID)            .ExecuteNonQuery());} The _sqlHelper.GetConnection() is just some other code that gets a connection object for you. You might have an even cleaner way to take that step out entirely. This looks more fluent, and the real magic sauce for me is the reader bits where you can put any kind of arbitrary method in there to iterate over the results.

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  • Are there any good music mixers available, equivalent to Windows "MP3 Tunes"?

    - by RobinJ
    In Windows my dad used to have a program called MP3 Tunes. I have tried running it with Wine, and it worked. But strange things kept happening to the program, so it's not a reliable way to play music. Basically I just want to have 2 players (in a single window) with these features: Preloading tracks in a player without immediately starting them. Fading from one track to the other. A timer on each player. These features are also desired, but not required: Microphone input. Prelistening before loading a song in a player (through a seperate sound card). Pitch/Tempo control. Just being able to browse folders in the filesystem (without things like a music library). Here are some screenshots of the program to clarify what I'm looking for:

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  • TOR Error permission issue

    - by LeChiffte
    I've tried reinstalling, updating, and removing and then reinstalling. Nothing seems to work. See screenshot below: the output of gedit /home/skynet/.tor-browser-en/LOG (The installation log) is: /usr/bin/tor-browser-en.sh: Your version in /home/skynet/.tor-browser-en is outdated or you do not have installed tor-browser-en yet. /usr/bin/tor-browser-en.sh: Extracting files to /home/skynet/.tor-browser-en/INSTALL. tar (child): /opt/tor-browser-en/tor-browser-linux64-3.6.2_en-US.tar.xz: Cannot open: No such file or directory tar (child): Error is not recoverable: exiting now tar: Child returned status 2 tar: Error is not recoverable: exiting now

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  • How to manage and improve web application with 50 customers?

    - by Muhammet Göktürk Ayan
    First of all, sorry for my English. We've developed a Web Application using ASP.NET and Sql Server. We've started selling it and of course are still continually improving and developing it. The question is, how do we go about updating each client's version of the site? We have, maybe, 50 customers. 50 different folders and 50 different db's sounds like a bad idea. Is there any known method for solving this kind of scenario? For Explain: We are developing a Crm, for 50 companies. They will have 10 users maybe. It makes 500 users and their customers and products.

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  • Why is implementing copy-paste in a touch screen based smartphone such a big deal?

    - by EpsilonVector
    I'm not entirely sure this is on-topic, but it definitely needs a programmer's understanding to be answered, and deals with general development (for a specific scenario) as opposed to a specific piece of code. In a way it also translates into "what are the challenges in doing X in a touch screen app", and similar questions have been asked here in the past. So here it is: When Apple didn't implement copy-pasting on the iPhone since version 1 I just assumed it was a UI issue- they were waiting until they figured out a good UI for it. But now the idea is out there, and Microsoft still released Windows Phone 7 without copy-pasting, promising it'll be ready in a few months. My question is: why does this takes a few months to implement? Are there some technological challenges that are unique to programming for a touch screen that I'm not familiar with?

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  • What is a good replacement for MS Frontpage?

    - by Clay Nichols
    I've been using MS Frontpage 2003 to maintain our company website for years. Looking for a replacement that can: Import/convert a MS FrontPage website and "modernize it" (clean up the HTML to make it standards compliant, etc.) Supports (or converts) the substitutions (Include Page and Text substitutions that are done when the page is published (so they become static HTML). Leverages my knowledge of FrontPage Looks like the likely contender is Web Expressions but I'm open to objective suggestions.

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  • Text editor capable of running complex Regular Expressions?

    - by Mashimom
    I want to find a text editor capable of running and mainly storing regular expressions for later re-use. It should also be able to run them across multiple files. I know I can get all that with grep, but there is not much for re-use on it. I was able to get some regular expression functionality on Gedit with plugins, but not nearly close to my needs. There is EditPad Pro for Windows (runs on wine) but native is always better :)

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  • 50% off ASP.NET hosting

    - by Fabrice Marguerie
    I haven't blogged for a long time because I'm busy working on an exciting new project. It's too early to tell you more. I'll provide details in a few months. Meanwhile, I wanted to write a quick post to share an excellent offer with you. It's that time of the year when you can get deals on many things, including web hosting. I'd like to remind you about Arvixe, a great web hosting provider for Windows (for ASP.NET) and Linux. For 48 hours, between Thursday November 24th at 00:00 PST (08:00 GMT/UTC) and Friday November 25th, Arvixe will be offering 50% off all of their shared hosting products. This will be for all new accounts, for life (as long as you continue to renew the account)!I've been using Arvixe for my websites for more than one year and a half now, and I highly recommend them. Here is an overview of what I get for a very good price:Unlimited diskspaceUnlimited data transferUnlimited domainsUnlimited POP3 and IMAP mailboxesUnlimited SQL Server 2008 databasesUnlimited MySQL databases.NET 1.1, 2, 3.5 and 4Dedicated application poolsFull trustIIS 7Daily backupsand more... And now, you can get that too for half the price. Just go to Arvixe.com and secure your own hosting account now by using the coupon code "Black Friday" during checkout.Disclaimer: the links to Arvixe are affiliate links that may bring me some money home if you sign up. Still, I recommend Arvixe because I use them and I'm very happy with what they offer.

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  • Is porting a Windows application to Mac worth it ?

    - by mikel
    I have a C# Windows application that sells for $35, and fairly regularly receive requests for a version for OS X too. I don't have any experience with Mac so far though, and so am not sure exactly how much work that would involve and if it would be worth it. If anyone's been in a similar position, it'd be very helpful to know: Roughly how many more (%) sales can you expect by porting to Mac ? Would you say it's worth the investment of a new Macbook Pro and the time of learning and porting to Objective-C ? Thanks in advance.

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  • can't run sqldeveloper on Ubuntu

    - by nazar_art
    I tried to install sqldeveloper by following way: Download SQL Developer from Oracle website (I chose Other Platforms download). Extract file to /opt: sudo unzip sqldeveloper-*-no-jre.zip -d /opt/ sudo chmod +x /opt/sqldeveloper/sqldeveloper.sh Linking over an in-path launcher for Oracle SQL Developer: sudo ln -s /opt/sqldeveloper/sqldeveloper.sh /usr/local/bin/sqldeveloper Edit /usr/local/bin/sqldeveloper.sh replace it's content to: #!/bin/bash cd /opt/sqldeveloper/sqldeveloper/bin ./sqldeveloper "$@" Run SQL Developer: sqldeveloper But it shows next output: nazar@lelyak-desktop:/opt/sqldeveloper? ./sqldeveloper.sh Oracle SQL Developer Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. LOAD TIME : 401# # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x00007f3b2dcacbe0, pid=20351, tid=139892273444608 # # JRE version: Java(TM) SE Runtime Environment (7.0_65-b17) (build 1.7.0_65-b17) # Java VM: Java HotSpot(TM) 64-Bit Server VM (24.65-b04 mixed mode linux-amd64 compressed oops) # Problematic frame: # C 0x00007f3b2dcacbe0 # # Core dump written. Default location: /opt/sqldeveloper/sqldeveloper/bin/core or core.20351 # # An error report file with more information is saved as: # /tmp/hs_err_pid20351.log # # If you would like to submit a bug report, please visit: # http://bugreport.sun.com/bugreport/crash.jsp # /opt/sqldeveloper/sqldeveloper/bin/../../ide/bin/launcher.sh: line 1193: 20351 Aborted (core dumped) ${JAVA} "${APP_VM_OPTS[@]}" ${APP_ENV_VARS} -classpath ${APP_CLASSPATH} ${APP_MAIN_CLASS} "${APP_APP_OPTS[@]}" 134 nazar@lelyak-desktop:/opt/sqldeveloper? java -version java version "1.7.0_65" Java(TM) SE Runtime Environment (build 1.7.0_65-b17) Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode) Here is content of /tmp/hs_err_pid20351.log How to solve this trouble?

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  • Installing gcc in Ubuntu 11.10

    - by Chi-Ping Lee
    I want to install gcc on my computer. To do this, I ran the following command: sudo apt-get install build-essential As this runs, it connects (or tries to connect) to the server tw.archive.ubuntu.com. But the server is not working. How can I fix this and get gcc installed? Note: the Taiwan mirror is down as of 2012-06-01 0352. See thread here. This pastebin contains the text of /etc/apt/sources.list, after changing from tw.archive.ubuntu.com to the main server.

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  • DotNetNuke 6 beta released

    - by Chris Hammond
    DotNetNuke 6 is coming, DotNetNuke 6 is coming! That’s right, we’re getting close, close enough that we had our first “beta” for DNN6 today. While we’ve had a couple of CTP (community technology preview) releases, the beta today has quite a bit of things wrapped up and addressed. There are a number of new things coming in DotNetNuke 6, and rather than try to explain them all I’ll point you to Joe Brinkman’s blog post from this morning . The biggest thing is that most of the Admin and Module settings...(read more)

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  • How do I install kivy?

    - by aspasia
    I was trying to install Kivy (by following the instructions here). I downloaded and installed all packages where the installation process went through without giving me any errors. However, when later I enter below command; sudo easy_install kivy It looked like it was going to work but it ends with an error by displaying following lines, which I don't comprehend: Detected compiler is unix /tmp/easy_install-BtOA_u/Kivy-1.8.0/kivy/graphics/texture.c:8:22: fatal error: pyconfig.h: No such file or directory #include "pyconfig.h" ^ compilation terminated. error: Setup script exited with error: command 'x86_64-linux-gnu-gcc' failed with exit status 1 I saw a similar question asked as; Problem with kivy installation. However, this didn't work for me though the question suggests installing libgles-mesa-dev-lts-raring which I did as below; sudo apt-get install libgles-mesa-dev-lts-raring which then gave below; E: Unable to locate package libgles-mesa-dev-lts-raring (sorry for being so specific and perhaps obvious, but I'm in the early stage of learning my way around linux). This user was running Ubuntu 12.04, and most other questions related to this I've seen came from people with a different release from mine, which has led me to believe that that is the reason why the suggestions to those didn't solve my problem. I'm using Ubuntu 13.10

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  • Music player that remembers last song and playlist

    - by user654628
    I am looking for something similar to winamp. I have seen other threads but I have tried some solutions and they did not work. I tried Banshee that comes with Ubuntu 11.10 but it does not open last song. I tried Rhythmbox with the remember last song plugin however it does not remember the playlist I got the song from so it would start shuffling all my music. I tried Amarok and it does the same thing as Banshee except cannot even play my playlist and starts playing all my music. I tried audacious but importing my playlist .m3u doesnt allow me to select the individual playlists and play them. I just moved from Windows using winamp and would like a music player that can open playlists .m3u and when I open the application later that it opens the last song and playlist and I can press the play hotkey and music will start playing on startup similar to winamp. I do not care about any additional functionality or user interface.

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  • Is there some application to download files from popular file hosting websites?

    - by Tim
    I was wondering if there are some applications for downloading files from some popular hosting websites, automating the procedure of waiting and fetching links and downloading files, once we give the applications the links? Examples of such websites are Rapidshare, Uploading, Megaupload, Filesonic, Fileserver, Hotfiles, Depositefiles, iFile. But the applications are not necessarily applicable to all of them. Thanks and regards! ADDED: I just tried slimrat. It failed to download files from rapidshare. Can it be because the website of rapidshare has changed recently and the parsing functionality for their website by slimrat is not up-to-date yet.

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  • Good alternative to NetLimiter?

    - by Harsh
    There is a program NetLimiter for windows. While I was using Windows it was very useful for me to find out the IP address of the person who was downloading from me, or to know IP address of any person on LAN who was using DC++ with some nick. And after that I can easily know the computer name of that person using nbtstat. I was wondering if there is any tool for Ubuntu using which I can find out the IP address of person who is downloading from me or from whom I am downloading on LAN. I am on university LAN and we are using PtokaX and DC++ for file sharing on LAN. people sometimes put some offencive stuff on open chat on DC++ using some Nick and I don't know how to trace them while I am using Ubuntu.

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  • GUI for watching logs (tail and grep)

    - by Grzegorz Oledzki
    Could you recommend a GUI application with powerful log watching capabilities? Generally it would work as tail -f in GUI, but on top of that following features would be very useful: filtering out some lines based on (regular) expressions coloring some lines based on (regular) expressions interactive search saveable configuration easily applicable to different files notifications based on (regular) expressions A similar tool on Windows is BareTail and its paid version - BareTailPro

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  • Inconsistent mouse cursor status while typing

    - by Jim
    I have noticed that when I type in some programs, Text Editor, Terminal, Bluefish, Gnome Baker, etc. the mouse cursor disappears while I am typing. In other programs like Firefox and LibreOffice, it does not. I am not an application programmer, but I imagined it has to do with their cross-platform nature and the way they are compiled or the toolkits they use. Then I noticed that Gnome-Do behaves the same way, the cursor stays on screen while typing. Why is there inconsistent handling of the mouse cursor, while typing, across different applications? Thank you.

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  • How do I make the jump from developing for Android to Windows Phone 7?

    - by Rob S.
    I'm planning on making the jump over from developing apps for Android to developing apps for Windows Phone 7 as well. For starters, I figured I would port over my simplest app. The code itself isn't much of a problem as the transition from Java to C# isn't that bad. If anything, this transition is actually easier than I expected. What is troublesome is switching SDKs. I've already compiled some basic Windows Phone 7 apps and ran through some tutorials but I'm still feeling a bit lost. For example, I'm not sure what the equivalent of a ScrollView on Android would be on Windows Phone 7. So does anyone have any advice or any resources they can offer me to help me make this transition? Additionally, any comments on the Windows Phone 7 app market (especially in comparison to the Android market) would also be greatly appreciated. Thank you very much in advance for your time.

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  • null values vs "empty" singleton for optional fields

    - by Uko
    First of all I'm developing a parser for an XML-based format for 3D graphics called XGL. But this question can be applied to any situation when you have fields in your class that are optional i.e. the value of this field can be missing. As I was taking a Scala course on coursera there was an interesting pattern when you create an abstract class with all the methods you need and then create a normal fully functional subclass and an "empty" singleton subclass that always returns false for isEmpty method and throws exceptions for the other ones. So my question is: is it better to just assign null if the optional field's value is missing or make a hierarchy described above and assign it an empty singleton implementation?

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  • Using jQuery to customize the styles in table cells

    - by Chris Hammond
    Originally posted on ChrisHammond.com I was trying to do some work with the Form and List module in DotNetNuke today and I needed to apply some custom styles to the LIST view of a module, without going in and creating a full XSL template for the module to use, I wanted to style the default table based grid view. In order to customize this view though I needed to do some custom jQuery that runs after the table is loaded, the jQuery then goes through and looks for columns, and based on the number of...(read more)

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  • How to Downgrade Packages on Ubuntu

    - by Chris Hoffman
    Ubuntu’s Update Manager keeps your packages at the latest version, but occasionally a new package version may not work properly. You can downgrade an installed package and lock it at a specific version to prevent it from being updated. This is particularly useful when you run into an updated package with a regression – a bug that prevents things from working properly. How to Banish Duplicate Photos with VisiPic How to Make Your Laptop Choose a Wired Connection Instead of Wireless HTG Explains: What Is Two-Factor Authentication and Should I Be Using It?

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  • What do you do if you reach a design dead-end in evolutionary methods like Agile or XP?

    - by Dipan Mehta
    As I was reading Martin Fowler's famous blog post Is Design Dead?, one of the striking impressions I got is that given the fact that in Agile Methodology and Extreme Programming, the design as well as programming is evolutionary, there are always points where things need to get refactored. It may be possible that when a programmer's level is good, and they understand design implications and don't make critical mistakes, the code continues to evolve. However, in a normal context, what is the ground reality in this context? In a normal day given some significant development goes into product, and when critical change occurs in requirement isn't it a constraint that how much ever we wish, fundamental design aspects cannot be modified? (without throwing away major part of the code). Is it not quite likely that one reaches dead-end on any further possible improvement on design and requirements? I am not advocating any non-Agile practice here, but I want to know from people who practice agile or iterative or evolutionary development methods, as for their real experiences. Have you ever reached such dead-ends? How have you managed to avoid it or escaped it? Or are there measures to ensure that design remains clean and flexible as it evolves?

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  • Problem upgrading from 13.04 to 13.10

    - by Charles
    Part way through upgrading from 13.04 to 13.10 the process ground to a halt with an error message. Now on retrying by going to 'Check for updates' I get the following: Failed to load the package list This is a serious problem. Try again later. If this problem appears again, please report an error to the developers. E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_saucy_universe_i18n_Translation-en%%5fGB, E:The package lists or status file could not be parsed or opened. Problem reported but my question is, "what can I do now?; Do I have to do a fresh install?; if so will settings etc. in my Home folder (on its own partition) be saved?" 13.04 still seems to be working perfectly, while upgrading I had a terrible internet connection varying between 'dead slow' and 'dead stop', not sure if that caused the problem.

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  • DNNWorld 2012, The Trailer

    - by Chris Hammond
    Some people in the asp.net community love to hate on DotNetNuke ( see Shaun's latest blog post comments ), that’s fine, the rest of us are off having a good time with it and the community! Check out the trailer for DNNWorld 2012, coming up in Orlando Florida in October (you can register for DNN World at http://dnnworld.dotnetnuke.com ). For those of you who love to hate on DNN, I challenge you to give it another look. A lot has changed with the platform in the past 10 years, most recently in the...(read more)

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