Search Results

Search found 19923 results on 797 pages for 'instance variables'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 18/797 | < Previous Page | 14 15 16 17 18 19 20 21 22 23 24 25  | Next Page >

  • Can I set a property on an object that is only declared on the instance type, when I don't know the

    - by WilberBeast
    Let me explain. I have a List into which I am adding various ASP.NET controls. I then wish to loop through the list and set a CssClass, however not every Control supports the property CssClass. What I would like to do is test if the underlying instance type supports the CssClass property and set it, but I'm not sure how to do the conversion prior to setting the property since I don't know the type of each Control object. I know that I can use typeof or x.GetType(), but I'm not sure how to use these to convert the controls back to the instance type in order to test for and then set the property. Actually I seem to have solved this, so I thought that I would post the code here for others. foreach (Control c in controlList) { PropertyInfo pi = c.GetType().GetProperty("CssClass"); if (pi != null) pi.SetValue(c, "desired_css_class", null); } I hope that this helps someone else as I has taken me hours to research these 2 lines of code. Cheers Steve

    Read the article

  • How do i get (is it possible to) a reference to the class that creates an instance of another class.

    - by Cadde
    Odd situation... I need to create a new instance of a class that needs a member of the calling class. But i can't pass a reference to the calling class through the constructor. The solution i am looking for is something like this: Public Class ChildClass Public Sub New(args) _MyMember = GetMemberFromCallingClass() ... ... End Sub End Class I want this to work without having to manually pass any references or variables from the calling class to the new instance of ChildClass. Is this possible and if so, what should i look at to make this part of my code.

    Read the article

  • Reverse-engineer SharePoint fields, content types and list instance—Part2

    - by ybbest
    Reverse-engineer SharePoint fields, content types and list instance—Part1 Reverse-engineer SharePoint fields, content types and list instance—Part2 In the part1 of this series, I demonstrated how to use VS2010 to Reverse-engineer SharePoint fields, content types and list instances. In the part 2 of this series, I will demonstrate how to do the same using CKS:Dev. CKS:Dev extends the Visual Studio 2010 SharePoint project system with advanced templates and tools. Using these extensions you will be able to find relevant information from your SharePoint environments without leaving Visual Studio. You will have greater productivity while developing SharePoint components and you will have greater deployment capabilities on your local SharePoint installation. You can download the complete solution here. 1. First, download and install appropriate CKS:Dev from CodePlex. If you are using SharePoint Foundation 2010 then download and install the SharePoint Foundation 2010 version If you are using SharePoint Server 2010 then download and install the SharePoint Server 2010 version 2. After installation, you need to restart your visual studio and create empty SharePoint. 3. Go to Viewà Server Explorer 4. Add SharePoint web application connection to the server explorer. 5. After add the connection, you can browse to see the contents for the Web Application. 6. Go to Site Columns à YBBEST (Custom Group of you own choice) and right-click the YBBEST Folder and Click Import Site Columns. 7. Go to ContentTypesà YBBEST (Custom Group of you own choice) and right-click the YBBEST Folder and Click Import Content Types. 8. After the import completes, you can find the fields and contentTypes in the SharePoint project below. Of course you need to do some modification to your current project to make it work. 9. Next, create list instances using list instance item template in Visual Studio 10. Finally, create lookup columns using the feature receivers and the final project will look like this. You can download the complete solution here.

    Read the article

  • System Variables, Stored Procedures or Functions for Meta Data

    - by BuckWoody
    Whenever you want to know something about SQL Server’s configuration, whether that’s the Instance itself or a database, you have a few options. If you want to know “dynamic” data, such as how much memory or CPU is consumed or what a particular query is doing, you should be using the Dynamic Management Views (DMVs) that you can read about here: http://msdn.microsoft.com/en-us/library/ms188754.aspx  But if you’re looking for how much memory is installed on the server, the version of the Instance, the drive letters of the backups and so on, you have other choices. The first of these are system variables. You access these with a SELECT statement, and they are useful when you need a discrete value for use, say in another query or to put into a table. You can read more about those here: http://msdn.microsoft.com/en-us/library/ms173823.aspx You also have a few stored procedures you can use. These often bring back a lot more data, pre-formatted for the screen. You access these with the EXECUTE syntax. It is a bit more difficult to take the data they return and get a single value or place the results in another table, but it is possible. You can read more about those here: http://msdn.microsoft.com/en-us/library/ms187961.aspx Yet another option is to use a system function, which you access with a SELECT statement, which also brings back a discrete value that you can use in a test or to place in another table. You can read about those here: http://msdn.microsoft.com/en-us/library/ms187812.aspx  By the way, many of these constructs simply query from tables in the master or msdb databases for the Instance or the system tables in a user database. You can get much of the information there as well, and there are even system views in each database to show you the meta-data dealing with structure – more on that here: http://msdn.microsoft.com/en-us/library/ms186778.aspx  Some of these choices are the only way to get at a certain piece of data. But others overlap – you can use one or the other, they both come back with the same data. So, like many Microsoft products, you have multiple ways to do the same thing. And that’s OK – just research what each is used for and how it’s intended to be used, and you’ll be able to select (pun intended) the right choice. Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

    Read the article

  • Prevent SyncTeX from opening new instance Evince?

    - by Kris
    I'm using the SyncTeX plugin in gedit and it seems that ctrl-clicking in gedit (forward-searching) opens up a new instance of Evince even if there was already an instance open. Is there a way to prevent this from happening? The SyncTeX forward search clearly calls evince in a way that is not the same as e.g. nautilus would. By the way, I compile my tex files with a script using the "external tools" plugin. The line that opens the pdf file uses xdg-open.

    Read the article

  • Dependency Injection: Only for single-instance objects?

    - by HappyDeveloper
    What if I want to also decouple my application, from classes like Product or User? (which usually have more than one instance) Take a look at this example: class Controller { public function someAction() { $product_1 = new Product(); $product_2 = new Product(); // do something with the products } } Is it right to say that Controller now depends on Product? I was thinking that we could decouple them too (as we would with single-instance objects like Database) In this example, however ugly, they are decoupled: class Controller { public function someAction(ProductInterface $new_product) { $product_1 = clone $new_product; $product_2 = clone $new_product; // do something with the products } } Has anyone done something like this before? Is it excessive?

    Read the article

  • removing an ssrs instance from a scale-out deployment

    - by Alex Bransky
    If you're like me you had at one time connected one of your Reporting Services instances to a report server database that was already in use by another instance.  This allows the instance to show up in the Scale-out Deployment section of the Reporting Services Configuration Manager.  My problem was that the server that got joined to the original server was no longer available as it had been repurposed, and when I clicked Remove Server to remove it from my scale-out it would fail because it couldn't contact the server.  After searching for a solution for quite some time I decided to look around in the report server database tables, and voila!  All I had to do was remove the old server from the Keys table.  I can't guarantee there won't be any side effects to this method, but it worked like a charm for me.

    Read the article

  • Overriding a function in an instance [on hold]

    - by MustSeeMelons
    Is it possible to override a function by instance? For example, A and B are both instances of MyClass. I have a function Action(), and I want to specify its implementation for each instance. To be more specific - the class is a Button, and the function is Clicked(). I don't want to derive a class 5 times to create 5 different button actions. Was thinking of something like it's handled in Java Swing: create a button, add code for the button press and use the button.

    Read the article

  • nginx does not use variables set in /etc/environment on system reboot, but does when restarted from shell

    - by Dave Nolan
    I have a Rails app running on nginx/passenger. It restarts happily in a shell using sudo /etc/init.d/nginx stop|start|restart. But Passenger throws an error when the system is rebooted: "Missing the Rails #{version} gem". But GEM_HOME and GEM_PATH are both set in /etc/environment so surely they would be available to all processes during reboot? /etc/environment PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games" GEM_HOME=/var/lib/gems/1.8 GEM_PATH=/var/lib/gems/1.8 /etc/init.d/nginx #! /bin/sh ### BEGIN INIT INFO # Provides: nginx # Required-Start: $all # Required-Stop: $all # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Short-Description: starts the nginx web server # Description: starts nginx using start-stop-daemon ### END INIT INFO PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin DAEMON=/opt/nginx/sbin/nginx NAME=nginx DESC=nginx test -x $DAEMON || exit 0 # Include nginx defaults if available if [ -f /etc/default/nginx ] ; then . /etc/default/nginx fi set -e case "$1" in start) echo -n "Starting $DESC: " start-stop-daemon --start --quiet --pidfile /var/log/nginx/$NAME.pid \ --exec $DAEMON -- $DAEMON_OPTS echo "$NAME." ;; stop) echo -n "Stopping $DESC: " start-stop-daemon --stop --quiet --pidfile /var/log/nginx/$NAME.pid \ --exec $DAEMON echo "$NAME." ;; restart|force-reload) echo -n "Restarting $DESC: " start-stop-daemon --stop --quiet --pidfile \ /var/log/nginx/$NAME.pid --exec $DAEMON sleep 1 start-stop-daemon --start --quiet --pidfile \ /var/log/nginx/$NAME.pid --exec $DAEMON -- $DAEMON_OPTS echo "$NAME." ;; reload) echo -n "Reloading $DESC configuration: " start-stop-daemon --stop --signal HUP --quiet --pidfile /var/log/nginx/$NAME.pid \ --exec $DAEMON echo "$NAME." ;; *) N=/etc/init.d/$NAME echo "Usage: $N {start|stop|restart|force-reload}" >&2 exit 1 ;; esac exit 0 $ opt/nginx/sbin/nginx -v nginx version: nginx/0.7.67 Ubuntu lucid

    Read the article

  • Problems migrating an EBS backed instance over AWS Regions

    - by gshankar
    Note: I asked this question on the EC2 forums too but haven't received any love there. Hopefully the ServerFault community will be more awesome. The new AWS Sydney region opening up is something that we've been waiting for for a long time but I'm having a lot of trouble migrating our instances over from N. California. I managed to migrate 1 instance over using CloudyScripts to move a snapshot and then firing up a new instance in the Sydney region. This was a very new instance so both the source and destination were running on a Ubuntu 12.04 LTS server and I had no issues there. However, the rest of our instances are all Ubuntu 10.04 LTS and with these, I'm having a lot of problems. I've tried following: 1- following the AWS whitepaper on moving instances which was given to us at the recent Customer Appreciation Day in Sydney where the new region was launched. The problem with this approach was with the last step (Step 19) here you register the image: ec2-register -s snap-0f62ec3f -n "Wombat" -d "migrated Wombat" --region ap-southeast-2 -a x86_64 --kernel aki-937e2ed6 --block-device-mapping "/dev/sdk=ephemeral0" I keep getting this error: Client.InvalidAMIID.NotFound: The AMI ID 'ami-937e2ed6' does not exist which I think is due to the kernel_id not existing in the Sydney region? 2- Using CloudyScripts to move a snapshot and then creating a new volume and attaching to a new instance in Sydney This results in the instance just hanging on boot and failing the status checks. I can't SSH in or look at the server log I suspect that my issue is with finding the right kernel_id for the volume in the new region. However I can't seem to work out how to go about finding this kernel_id, the ones I've tried (from the original instance) don't result in the Client.InvalidAMIID.NotFound: The AMI ID 'ami-937e2ed6' error and any other kernel_id just won't boot. I've tried both 12.04 and 10.04 versions of Ubuntu. Nothing seems to work, I've been banging my head against a wall for a while now, please help! New (broken) instance i-a1acda9b ami-9b8611a1 aki-31990e0b Source instance i-08a6664e ami-b37e2ef6 aki-937e2ed6 p.s. I also tried following this guide on updating my Ubuntu LTS version to 12.04 before doing the migration but it didn't seem to work either, still getting stuck on updating the kernel_id http://ubuntu-smoser.blogspot.com.au/2010/04/upgrading-ebs-instance.html

    Read the article

  • Time between AWS Notifying of Scale Down and Terminating instance

    - by SteveEdson
    Here is the scenario, there are multiple EC2 instances behind a load balancer. When traffic dies down, the SCALE_DOWN policy is triggered from a CloudWatch alarm. What I would like, is for the instance that is going to be terminated, or a separate server altogether, to be able to run a quick script that will execute a few commands to ensure all data has been transferred. My initial question was going to be how can I send a notification when an instance is going to be terminated by an auto scale, SCALE_DOWN policy. But then I saw this question Amazon EC2 notifying the instance when the autoscale service terminates it. If the notification is sent, how much time is there before the instance actually gets terminated? Are there any parameters to specify this time? Would it be a better idea to notify an instance that it is no longer needed, and get the instance to terminate itself once it has finished running the final script? Or, am I making this into a bigger problem than it actually is, and theres a far simpler solution?

    Read the article

  • What is the best place to setup system wide environment variables on Linux?

    - by Sorin Sbarnea
    I just want to setup a system wide environment variable, JAVA_HOME for all users, including root user. Requirements: accessible to normal users accessible to root always loaded, not only for bash (gnome-terminal does not start a bash by default) to work on Ubuntu, Debian and optionally Red Hat great if addition could be easily scripted So far here is the no-list: /etc/profile.d/java.sh - not executed if you start a new console from gnome-terminal /etc/profile - same as above ~/.profile - current user only, also any solution assuming ~ would not be acceptable because home directory could be on NIS, and JAVA_HOME could be different.

    Read the article

  • Loading class instance from XML with Texture2D

    - by Thegluestickman
    I'm having trouble with XML and XNA. I want to be able to load weapon settings through XML to make my weapons easier to make and to have less code in the actual project file. So I started out making a basic XML document, something to just assign variables with. But no matter what I changed it gave me a new error every time. The code below gives me a "XML element 'Tag' not found", I added and it started to say the variables weren't found. What I wanted to do in the XML file as well, was load a texture for the file too. So I created a static class to hold my texture values, then in the Texture tag of my XML document I would set it to that instance too. I think that's were the problems are occuring because that's where the "XML element 'Tag' not found" error is pointing me too. My XML document: <XnaContent> <Asset Type="ConversationEngine.Weapon"> <weaponStrength>0</weaponStrength> <damageModifiers>0</damageModifiers> <speed>0</speed> <magicDefense>0</magicDefense> <description>0</description> <identifier>0</identifier> <weaponTexture>LoadWeaponTextures.ironSword</weaponTexture> </Asset> </XnaContent> My Class to load the weapon XML: public class Weapon { public int weaponStrength; public int damageModifiers; public int speed; public int magicDefense; public string description; public string identifier; public Texture2D weaponTexture; } public static class LoadWeaponXML { static Weapon Weapons; public static Weapon WeaponLoad(ContentManager content, int id) { Weapons = content.Load<Weapon>(@"Weapons/" + id); return Weapons; } } public static class LoadWeaponTextures { public static Texture2D ironSword; public static void TextureLoad(ContentManager content) { ironSword = content.Load<Texture2D>("Sword"); } } I'm not entirely sure if you can load textures through XML, but any help would be greatly appreciated.

    Read the article

  • Comparing Table Variables with Temporary Tables

    This articles brings a comparison of temporary tables with table variables from SQL Server author, Wayne Sheffield. In includes an in-depth look at the differences between them. SQL Server monitoring made easy "Keeping an eye on our many SQL Server instances is much easier with SQL Response." Mike Lile.Download a free trial of SQL Response now.

    Read the article

  • How does a "Variables introduce state"?

    - by kunj2aan
    I was reading the "C++ Coding Standards" and this line was there: Variables introduce state, and you should have to deal with as little state as possible, with lifetimes as short as possible. Doesn't anything that mutates eventually manipulate state? What does "you should have to deal with little state as possible" mean? In an impure language such as C++, isn't state management really what you are doing? And what are other ways to "deal with as little state as possible" other than limiting variable lifetime?

    Read the article

  • Characteristics and Common Usage Scenarios of SSIS Variables

    SQL Server Integration Services' primary purpose is to serve as a database development platform. As such, it is subject to standard best practices of software programming, which among other recommendations, advocate reusability. Realizing this objective in SSIS frequently involves the use of variables. Their characteristics and most common usage scenarios will be the primary subject of our presentation.

    Read the article

  • Using Server Variables in ASP.NET 3.5

    If you are an ASP.NET developer you may notice from your day-to-day job in developing websites that there is some functionality that you need in order to complete specific website tasks. For example you may need to know the IP address of a specific visitor or the browser they re using or even where they re coming from. These questions can be answered by knowing how to use Server Variables in ASP.NET 3.5.... Cloud Servers in Demand - GoGrid Start Small and Grow with Your Business. $0.10/hour

    Read the article

  • Google Analytics: Custom variables issue difference in data

    - by Bart
    We’ve set up tracking through custom variables in Google Analytics to measure which offices are getting the most traffic. The custom var consists out of the key (=office) and value = (office name). In our Custom Var tab in audience we get no data (actually we got 1 hit, but we think the data is way off). When we setup advanced segments with the filters on key and value we get the correct data. Now we are wondering why we aren’t getting that data in the custom var tab.

    Read the article

  • Declaring variables in SQL

    - by Tim Hibbard
    I would like to blog more about the problems I encounter on a daily basis.  I find that taking 10 minutes or so to write a simple solution to my problems helps me retain that information. I always forget the specific syntax to declaring variables in T-SQL.  declare @startdate datetime; declare @enddate datetime;   set @startdate = '04/01/2010'; set @enddate = '04/30/2010';   select count(id) from triphistory where tripdate between @startdate and @enddate

    Read the article

  • I've Heard Global Variables Are Bad, What Alternative Solution Should I Use?

    - by Jay
    I've read all over the place that global variables are bad and alternatives should be used. In Javascript specifically, what solution should I choose. I'm thinking of a function, that when fed two arguments (function globalVariables(Variable,Value)) looks if Variable exists in a local array and if it does set it's value to Value, else, Variable and Value are appended. If the function is called without arguments (function globalVariables()) it returns the array. Perhaps if the function is fired with just one argument (function globalVariables(Variable)) it returns the value of Variable in the array. What do you think? I'd like to hear your alternative solutions and arguments for using global variables.

    Read the article

  • Using singleton instead of a global static instance

    - by Farstucker
    I ran into a problem today and a friend recommended I use a global static instance or more elegantly a singleton pattern. I spent a few hours reading about singletons but a few things still escape me. Background: What Im trying to accomplish is creating an instance of an API and use this one instance in all my classes (as opposed to making a new connection, etc). There seems to be about 100 ways of creating a singleton but with some help from yoda I found some thread safe examples. ..so given the following code: public sealed class Singleton { public static Singleton Instance { get; private set; } private Singleton() { APIClass api = new APIClass(); //Can this be done? } static Singleton() { Instance = new Singleton(); } } How/Where would you instantiate the this new class and how should it be called from a separate class? EDIT: I realize the Singleton class can be called with something like Singleton obj1 = Singleton.Instance(); but would I be able to access the methods within the APIs Class (ie. obj1.Start)? (not that I need to, just asking) EDIT #2: I might have been a bit premature in checking the answer but I do have one small thing that is still causing me problems. The API is launching just fine, unfortunately Im able to launch two instances? New Code public sealed class SingletonAPI { public static SingletonAPI Instance { get; private set; } private SingletonAPI() {} static SingletonAPI() { Instance = new SingletonAPI(); } // API method: public void Start() { API myAPI = new API();} } but if I try to do something like this... SingletonAPI api = SingletonAPI.Instance; api.Start(); SingletonAPI api2 = SingletonAPI.Instance; // This was just for testing. api2.Start(); I get an error saying that I cannot start more than one instance.

    Read the article

  • How to terminate a particular Azure worker role instance

    - by Oliver Bock
    Background I am trying to work out the best structure for an Azure application. Each of my worker roles will spin up multiple long-running jobs. Over time I can transfer jobs from one instance to another by switching them to a readonly mode on the source instance, spinning them up on the target instance, and then spinning the original down on the source instance. If I have too many jobs then I can tell Azure to spin up extra role instance, and use them for new jobs. Conversely if my load drops (e.g. during the night) then I can consolidate outstanding jobs to a few machines and tell Azure to give me fewer instances. The trouble is that (as I understand it) Azure provides no mechanism to allow me to decide which instance to stop. Thus I cannot know which servers to consolidate onto, and some of my jobs will die when their instance stops, causing delays for users while I restart those jobs on surviving instances. Idea 1: I decide which instance to stop, and return from its Run(). I then tell Azure to reduce my instance count by one, and hope it concludes that the broken instance is a good candidate. Has anyone tried anything like this? Idea 2: I predefine a whole bunch of different worker roles, with identical contents. I can individually stop and start them by switching their instance count from zero to one, and back again. I think this idea would work, but I don't like it because it seems to go against the natural Azure way of doing things, and because it involves me in a lot of extra bookkeeping to manage the extra worker roles. Idea 3: Live with it. Any better ideas?

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 14 15 16 17 18 19 20 21 22 23 24 25  | Next Page >