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• How to read, edit and write xls files, and then export to SQL Server

  - by tuanvt

  I have an excel file that have the list of contacts( about 10 k of them) that I need to push into my SQL Server database. So, I am writing an .net windows program using visual studio 2008 to read the files, generate random password for each contact, and then push these information in to my SQL Server database. It was easy to handle excel file in 2003 but now my computer have office 2007 in it and things seem to changed. I am digging on Microsoft.Office.Interop.Excel but it is seem to be a lot more complicated than before.

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• Wait for animation, render to complete - XAML and C#

  - by Adam S

  Hi all. I have a situation where I am animating part of my XAML application, and I need to wait for the animation AND rendering to complete before I can move on in my code. So far the tail end of my function looks like: ProcExpandCollapse.Begin(); while (ProcExpandCollapse.GetCurrentState() != ClockState.Stopped) { } } Which, in theory, will wait until the animation is finished. But it will not wait until the rendering is finished - the thread drawing the application might still not have re-drawn the animation. The animation is expanding a UIElement, and then the next part of my code uses it's rendered size to do some things. My question then is, how do I wait until my UI Element is re-rendered before moving on?

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• Wordpress SQL_CALC fix causes PHP error

  - by ok1ha

  I'm looking for some followup on an older topic for Wordpress where SQL_CALC was found to slow things down when you have a large DB in Wordpress. I have been using the code, at the bottom of this post, to get around it but it does generate an error in my error log. How would I prevent this error? PHP Warning: Division by zero in /var/www/vhosts/domain.com/httpdocs/wp-content/themes/greatTheme/functions.php on line 19 The original thread: http://wordpress.org/support/topic/slow-queries-sql_calc_found_rows-bringing-down-site?replies=25 The code in my functions.php: add_filter('pre_get_posts', 'optimized_get_posts', 100); function optimized_get_posts() { global $wp_query, $wpdb; $wp_query->query_vars['no_found_rows'] = 1; $wp_query->found_posts = $wpdb->get_var( "SELECT COUNT(*) FROM wp_posts WHERE 1=1 AND wp_posts.post_type = 'post' AND (wp_posts.post_status = 'publish' OR wp_posts.post_status = 'private')" ); $wp_query->found_posts = apply_filters_ref_array( 'found_posts', array( $wp_query->found_posts, &$wp_query ) ); $wp_query->max_num_pages = ceil($wp_query->found_posts / $wp_query->query_vars['posts_per_page']); return $wp_query; }

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• With google maps, can you use google's own popup windows?

  - by SLC

  I've implemented a google map with points and stuff that uses an address that the user inputs. When you click a point, the popup bubble appears with the name and address in. Often this name and address is a prominent location, as it's used for meetings and things, such as a university. If you google the address yourself on maps.google.co.uk then you get google's own popup bubble, which often has a photo, information, opening hours, links to directions, reviews, etc. etc. I am wondering if there's a way to use that popup dialog instead of my own, where it is available. I can't see anything in the API to do this. I'm using V2 as we support IE6 in a lot of our users, but I've been told recently I can upgrade to V3 should I need functionality from it. Any ideas?

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• Porting existing code from C# 2.0 to C#3.0 and .Net 3.5 (possibly .net 4.0)

  - by kanad

  Our one and only enterprise application suite has been developed over last 3 years using C# 2.0 on .Net 3.0. We use winforms and WCF heavily. The development tools is VS 2005 Pro / TFS 2005 / Resharper 3.1 As technical lead I obviously understand the benefits in a move to C#3.0 and .Net 3.5. But I want to convince management for a move to C#3.0, .Net 3.5, VS 2008 and TFS 2008. They will obviously be interested in things like productivity, cost, quality etc. Please suggest me some ideas on how best to make my case. Given that this may not happen till mid next year am I better off to hold till VS 2010 and .Net 4.0 is out.

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• How to safely remove a USB drive on Windows CE 5.0?

  - by Radu C

  Until today, I assumed that Windows CE was writing everything to disk and I wouldn't end up with a broken FAT16 when I removed the USB stick. Today, I was proven wrong. I use a USB stick to test things on a WinCE 5.0 device. I don't write anything from the app or WinCE to the stick. I just execute my app, and my app reads its settings and pictures from the stick. Today, just this order of operations broke my stick filesystem (and I have to fix it). Is there a way to tell WinCE 5.0 to unmount the stick before I remove it? It sees it as a "Hard Drive", and the tap-and-hold menu has nothing along the lines of "safely remove drive". I'm happy with both code to do this operation and some trick that I didn't find in Windows CE yet. Thank you.

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• Writing Great Software

  - by 01010011

  Hi, I'm currently reading Head First's Object Oriented Analysis and Design. The book states that to write great software (i.e. software that is well-designed, well-coded, easy to maintain, reuse, and extend) you need to do three things: Firstly, make sure the software does everything the customer wants it to do Once step 1 is completed, apply Object Oriented principles and techniques to eliminate any duplicate code that might have slipped in Once steps 1 and 2 are complete, then apply design patterns to make sure the software is maintainable and reusable for years to come. My question is, do you follow these steps when developing great software? If not, what steps do you usually follow inorder to ensure it's well designed, well-coded, easy to maintain, reuse and extend?

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• Programmatically check whether a linux kernel module exists or not at runtime

  - by dgraziotin

  I am writing a C daemon, which depends on the existence of two kernel modules in order to do its job. The program does not directly use these (or any other) modules. It only needs them to exist. Therefore, I would like to programmatically check whether these modules are already loaded or not, in order to warn the user at runtime. Before I start to do things like parsing /proc/modules or lsmod output, does a utility function already exist somewhere? Something like is_module_loaded(const char* name); I am pretty sure this has been asked before. However, I think I am missing the correct terms to search for this. Thanks!

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• making links with out anchor tag using dojo

  - by vetri

  I have a image with link <div id="img"><a href="src/blah.html"><img src="/src/img.png"/></a></div> but i don't wanna use tag for linking.the page has multiple entries like this in a page as it is being populated for a search result.Some 10 or more entries will be there in a page.its all inside a <div id="result"></div> have an idea for doing it dojo.help me finish that function(){ dojo.query('.Result').forEach(function(item){ try{ var href = dojo.query('.img',item)[0] //do things dojo.connect(Node,'onclick',dojo.hitch(this,function(){ window.location = location; }));

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• SWIG interface file questions

  - by morpheous

  I am writing a C/C++ extension module for other languages and I am using SWIG to generate the bindings. I have two questions Can I include more than 1 header file in the declaration part of the interface file e.g.: /* Declarations exposed to wrapper: */ > %{ > #define SWIG_FILE_WITH_INIT > #include "a.h" > #include "b.h" > #include "c.h" %} In all of the examples I have seen so far, after the header include declaration (as shown above), the functions declared in the header are then declared again in the interface file. Is this really necessary, as it means there are two copies of the function declarations that need to be maintained. Note: I can appreciate that some functions/methods declaration may need to be 'decorated' with the 'newobject' declaration so these obviously need to be in the interface file, to avoid memory leaks - however, I would have though that it would be sufficient to include the headers and then ONLY the declarations of the functions/methods that need to be declared with 'newobject' - is this recommended way of doing things?

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• How to pass a file (read from Java) most effectively to a native method?

  - by soc

  Hi, I have approx. 30000 files (1MB each) which I want to put into a native method, which requires just an byte array and the size of it as arguments. I looked through some examples and benchmarks (like http://nadeausoftware.com/articles/2008/02/java_tip_how_read_files_quickly) but all of them do some other fancy things. Basically I don't care about the contents of the file, I don't want to access something in that file or the byte array or do anything else with it. I just want to put a file into a native method which accepts an byte array as fast as possible. At the moment I'm using RandomAccessFile, but that's horribly slow (10MB/s). Is there anything like byte[] readTheWholeFile(File file){ ... } which I could put into native void fancyCMethod(readTheWholeFile(myFile), myFile.length()) What would you suggest?

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• Keeping a window always on top -- including menus (win32)

  - by Steven Lu

  I would like to have a layered window that is always-on-top, which I can accomplish, but there are certain screen elements that still get drawn over it, such as menus (including the start menu). Is there any way to make a window or child window of my application have a high enough top-ness property that it will draw over another application's menus? Or is there something built in to windows that ensures that menus in the currently active application are always drawn on top? In fact, I don't really understand all that well how menus work. So it might not even make any sense for me to try to make my window "act like a menu" in hopes of making it cover more things.

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• lambda+for_each+delete on STL containers

  - by rubenvb

  I'm trying to get a simple delete every pointer in my vector/list/... function written with an ultra cool lambda function. Mind you, I don't know c**p about those things :) template <typename T> void delete_clear(T const& cont) { for_each(T.begin(), T.end(), [](???){ ???->delete() } ); T.clear(); } I have no clue what to fill in for the ???'s. Any help is greatly appreciated!

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• What is a good balance for having developers learn at work

  - by Mel

  So now I am the manager. One of the things I always promised myself I would do is have the other developers focus on learning new stuff. In fact I even want to force them to read a couple books that really helped me learn to program. However now I am also accountable for the product getting finished. I have this vision of everyone reading books instead of working and me getting fired. What is the best way to work learning into the developers schedules, especially for the ones that just don't care to learn. How much time should be spent on learning in a work week?

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• int i vs int index etc. Which one is better?

  - by Earlz

  Coming from a C background I've always used int i for generic loop variables. Of course in big nested loops or other complex things I may use a descriptive name but which one had you rather see? int i; for(i=0;i<Controls.Count;i++){ DoStuff(Controls[i]); } or int index; for(index=0;index<Controls.Count;index++){ DoStuff(Controls[index]); } In the current project I am working on there are both of these styles and index being replaced by ndx. Which one is better? Is the i variable too generic? Also what about the other C style names? i, j, k Should all of these be replaced by actual descriptive variables?

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• Updating the collections of entities with NHibernate the correct way

  - by karel_evzen

  A simple question regarding how NHibernate works: I have a parent entity that has a collection of other child entities. Those child entities have a reference to the parent entity they belong to. Now I want to implement an Add method to the parent entity that would add a child to it. Should that Add method only add the child to its new parents collection, or should it also update the parent reference of the child or should it also remove the added entity from its previous parents collection? Do I have to do all these things in that method or will NHibernate do something for me? Thanks.

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• How to update JLabel in Swing?

  - by Roman

  I am trying to use Swing Timer and I wanted to start from a very simple program. I have a window with text: "You have n seconds", where n changes from 10 to 0 every second. I know how to generate a window with text. And I understand how Timer works (it starts an action periodically). But I cannot figure out how to combing this two things. Should I use that: JLabel label = new JLabel(myMessage); and then with timer I need to update the "myMessage" variable? But I think I need to "force" my window to "update" itself (to display a new value stored in "myMessage").

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• Icon fonts vs images

  - by Miss A

  My manager tells me not to use icon fonts on our websites, as it is another http request plus the extra kBs to download. Also because I would have to use content before for the font (I can't change the html), he prefers background images so it works in IE7. Personally I love the little things, so nice and crisp and resizeable! I get it if we only use a couple of icons on a website but if I would use, say 5 icons on a site - what do you guys think? Is it worth using an icon font or is he right thinking that it is not? I am just a sucker for anything new and exciting, and this year it is the retina display.

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• Can entities be attached to an ISession that weren't previously attached?

  - by TheCloudlessSky

  I'm playing around with NHibernate 3.0. So far things are pretty cool. I'm trying to attach an entity that wasn't detached previously: var post = new Post(){ Id = 2 } session.Update(post); // Thought this would work but it doesn't. post.Title = "New Title After Update"; session.Flush(); Is this possible so that only Title gets updated? This is currently possible in EntityFramework. I'd like to not have to load Post from the database when I just need to update a few properties.

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• Updating a database periodically with Java

  - by MSR

  I would like to perform updates to a MySQL database using two separate classes (that do different things) -- one doing so every 10 seconds, and the second every minute. I have a few gaps in my Java knowledge and I'm wondering what the best way to achieve it is. Importantly, if connectivity to the database is lost, I need reconnection attempts to occur indefinitely, and I'm guessing the use of Prepared Statements will make queries more efficient. Should the connection to the database be left open all the time or closed between the updates being run? Maybe I also need to think about clearing objects/resources out of memory if the class instances are going to be run indefinitely.

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• Receiving integers, but also want to test for char.

  - by Wayne Haworth

  Say I am looking to receive a series of numeric values and read them into an int, but I also want to test if the user hit key 'x'. I am sure I am missing something obvious, and have tried a few things but seem to be stuck. This is what I have so far... cout << endl << "Enter key (or 'x' to exit): "; cin key; if (key == 'x') { cout << "exiting";} // continue on...

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• jQuery: Quick question. How to select string variable?

  - by user317563

  Hello world, EDIT: I would like to avoid doing something like this: var str = 'Hello'; if ( str == 'Hello') { alert(str); } I would rather do: var str = 'Hello'; $(str).filter(':contains("Hello")').each(function(){ alert(this) }); I've tried a lot of things: $(str).text().method1().method2().method3(); $(str).val().method1().method2().method3(); $(str).contents().method1().method2().method3(); Nothing worked. Is it possible to do this? Thank you for your time. Kind regards, Marius

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• Capture Video in iPhone

  - by Timmi

  Hi, I used the following code to record video. UIImagePickerController *m_objpicker;=[[UIImagePickerController alloc] init]; m_objpicker.sourceType = UIImagePickerControllerSourceTypeCamera; m_objpicker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie]; // hide the camera controls //picker.showsCameraControls=NO; m_objpicker.delegate = self; //picker.allowsImageEditing = NO; m_objpicker.allowsEditing=NO; // and put our overlay view in //picker.cameraOverlayView=m_objOverlayView; [self presentModalViewController:m_objpicker animated:YES]; When we finish recording (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ NSURL *m_objMediaURL=[info objectForKey:UIImagePickerControllerMediaURL]; [m_objpicker dismissModalViewControllerAnimated:YES]; } My doubt is, how to save the captured video to a location we specify. Also how to use UISaveVideoAtPathToSavedPhotosAlbum . What all things i need to change in my code so that i can save video to a specified location Thanks,

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• Find an element in List of List, c#

  - by Sandy

  Hi, I have a list of lists as below: List<List <T> > userList Class T { string uniqueidentifier, string param2, int param2} I have a uniqueidentifier and i need to find the element T in the list that has the same 'uniqueidentifier' value. I can do it using two 'foreach' loops. This does not seem to be nice way doing things. I guess there should be some inbuilt method like 'Find' that does the same thing and is highly optimized.

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• Easy Threading in WPF

  - by Sandeep Bansal

  Hi everyone, I've been reading a lot about threading in C#, WPF and Silverlight but can't get it to work. My main problem is I have the _load (_Initialized) action and it has a lot of object creation and along with that I have timers working doing different things, this causes the startup time of the program to be very slow and obviously causes the UI to hang and it isn't a good thing for deploying to a lot of users. My timers change values of labels and textfields but having them do that on another thread is an obvious no go. So can someone give me some examples on how to achieve what I need to do? Thanks

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