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Articles indexed Thursday April 15 2010

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  • iphone xcode - different levels of drill down in tab bar controller - nav controller - table view

    - by Frames84
    I have this type of data categories: today news - news item jobs news - news item general news - sub category news - news item So i have followed the very good tutorial 'Building an iPhone App Combining Tab Bar, Navigation and Tab' http://www.youtube.com/watch?v=LBnPfAtswgw and all is good with the 1st two 'todays news' and 'jobs news' but can't figure out the best method for implementing the sub category table view? Do i use the same table view but reload it with the sub categories then some how work out when one is click that it's a sub category or is there a better method? This is how i'm set up in Main Window.Xib - Tab Bar Controller - -Navigation Controller (today) - - - Table View (list of today news) - -Navigation Controller (jobs) - - - Table View (list of jobs news) - -Navigation Controller (general) - - - Table View (general sub cat) // how to implement this Table View - - - - Table View (list of sub cat news) Thanks for your time

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  • Is it possible to parameterize a MEF import?

    - by Josh Einstein
    I am relatively new to MEF so I don't fully understand the capabilities. I'm trying to achieve something similar to Unity's InjectionMember. Let's say I have a class that imports MEF parts. For the sake of simplicity, let's take the following class as an example of the exported part. [Export] [PartCreationPolicy(CreationPolicy.NonShared)] public class Logger { public string Category { get; set; } public void Write(string text) { } } public class MyViewModel { [Import] public Logger Log { get; set; } } Now what I'm trying to figure out is if it's possible to specify a value for the Category property at the import. Something like: public class MyViewModel { [MyImportAttribute(Category="MyCategory")] public Logger Log { get; set; } } public class MyOtherViewModel { [MyImportAttribute(Category="MyOtherCategory")] public Logger Log { get; set; } } For the time being, what I'm doing is implementing IPartImportsSatisfiedNotification and setting the Category in code. But obviously I would rather keep everything neatly in one place.

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  • Reflecting actionscript objects

    - by Chin
    Is it possible to reflect an object in actionscript and get the property names back in the order they are positioned in the class? I have tried the following var reflectionObject : Object = ObjectUtil.getClassInfo(obj); var propsArray : Array = reflectionObject.properties; (orders alphabetically) var typeInfo:XML = describeType(obj) (Not sure what order this is)

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  • Using hidden values with jQuery (and ASP.NET MVC) -- not working?

    - by SlackerCoder
    Im using a couple of JSON calls to render data, etc etc. In order to keep the proper key value, I am storing it in a tag. I have this in several places in my code, none of which cause an issue like this one is. Here is the jQuery: The call that "sets" the value: $("a[id^='planSetupAddNewPlan']").live('click', function() { var x = $(this).attr('id'); x = x.substring(19); $("#hidPlanSetupCurrentGroupKey").val(x); $.getJSON("/GroupSetup/PlanSetupAddNewList", { GroupKey: x }, function(data) { $("#planSetupAddNew").html('' + data.TableResult + ''); alert('First Inside 2 ' + x); $.blockUI({ message: $("#planSetupAddNew") }); }); }); The call that "gets" the value: $("#ddlPlanSetupAddNewProduct").live('change', function() { var a = $("#hidPlanSetupCurrentGroupKey").val(); var prod = $(this).val(); alert(a); $.getJSON("/GroupSetup/PlanSetupChangePlanList", { GroupKey: a, Product: prod }, function(data) { if (data.Message == "Success") { $("#planSetupAddNewPlan").html('' + data.TableResult + ''); } else if (data.Message == "Error") { //Do something } }); }); Here is the html in question: <div id="planSetupAddNew" style="display:none; cursor: default;"> <input type="hidden" id="hidPlanSetupCurrentGroupKey" /> <div id="planSetupAddNewData"> </div> </div> In the first section, the alert ('First Inside 2 ' + x) returns what I expect (where x = the key value), and if I add a line to display the contents of the hidden field, that works as well: ie. var key = $("#hidPlanSetupCurrentGroupKey").val(); alert(key); In the "alert(a);" call, I am getting "undefined". I have looked at the other code in the same view and it is the same and it works. I must be missing something, or have some sort of mistype that I havent caught. Just an overview of the controller events: The first call (/GroupSetup/PlanSetupAddNewList) will return an html string building a "form" for users to enter information into. The second call (/GroupSetup/PlanSetupChangePlanList) just changes a second dropdown based on the first dropdown selection (overwriting the html in the div). If you need more info, let me know! Any thoughts/tips/pointers/suggestions?!?! Thanks for all your help :)

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  • Access Control Lists basics

    - by vtortola
    Hi, I'm gonna add authorization, user and groups management to my application, basically... you will can define a set of permissions for a concrete user or group. For example, you could specify whom can use a concrete resource. So I want to ensure that my assumptions about ACLs are right: A basic rule could be "Grant", "Deny", "NoSet". User permissions have priority over group permissions. "Deny" statement has priority over "Grant". For example, user "u1" belongs to group "A", the resource "X" has this ACL "u1:grant,A:deny" user "u1" should be able to access the resource, shouldn't it? If a resource has no ACL set... does it means that anyone can access it? should I provide a default ACL? Any document about ACL in a general way? Cheers.

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  • How to: Show wait cursor in managed and native code

    - by TechTwaddle
    Someone on the MSDN forum asked about how to show a wait cursor, like when your application is loading or performing some (background) task. It’s pretty simple to show the wait cursor in both managed and native code, and in this post we will see just how. Managed Code (C#) Set Cursor.Current to Cursors.WaitCursor, and call Cursor.Show(). And to come back to normal cursor, set Cursor.Current to Cursors.Default and call Show() again. Below is a button handler for a sample app that I made, (watch the video below) private void button1_Click(object sender, EventArgs e) {     lblProgress.Text = "Downloading ether...";     lblProgress.Update();     Cursor.Current = Cursors.WaitCursor;     Cursor.Show();     //do some processing     for (int i = 0; i < 50; i++)     {         progressBar1.Value = 2 * (i + 1);         Thread.Sleep(100);     }     Cursor.Current = Cursors.Default;     Cursor.Show();     lblProgress.Text = "Download complete.";     lblProgress.Update(); }   Native Code In native code, call SetCursor(LoadCursor(NULL, IDC_WAIT)); to show the wait cursor; and SetCursor(LoadCursor(NULL, IDC_ARROW)); to come back to normal. The same button handler for native version of the app is below, case IDC_BUTTON_DOWNLOAD:     {         HWND temp;         temp = GetDlgItem(hDlg, IDC_STATIC_PROGRESS);         SetWindowText(temp, L"Downloading ether...");         UpdateWindow(temp);         SetCursor(LoadCursor(NULL, IDC_WAIT));         temp = GetDlgItem(hDlg, IDC_PROGRESSBAR);         for (int i=0; i<50; i++)         {             SendMessage(temp, PBM_SETPOS, (i+1)*2, 0);             Sleep(100);         }         SetCursor(LoadCursor(NULL, IDC_ARROW));         temp = GetDlgItem(hDlg, IDC_STATIC_PROGRESS);         SetWindowText(temp, L"Download Complete.");         UpdateWindow(temp);     }     break; Here is a video of the sample app running. First the managed version is deployed and the native version next,

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  • A button to set all processes to on-hold for Linux?

    - by fuenfundachtzig
    When Linux starts swapping you're basically doomed. Very soon the system won't react to any input any more, but happily swap on until the end of days... Can you think of a command that holds all processes whatsoever, thus (and while) allowing you to open a clean shell where you can examine the source of the problem and kill the process which ate up all the memory? (I guess this won't be easy, because as the memory is probably completely filled up you'd need to swap out some more memory to gather space for opening a shell, on the other hand all other swapping processes must be stopped.) If you tied such a command to a hot key then maybe you can use this as an emergency button saving you a lot a time. Any ideas if this is possible at all? Has somebody tried something like this before? If one could realize this it would be a cool feature :)

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  • AHCI and Memtest86+

    - by satanicpuppy
    I've got a motherboard with SATA AHCI enabled, and I need to disable it to run Memtest86+ (because Window's built-in RAM diagnostic tool isn't worth a barrel of warm snot), and because the Memtest developers are too lazy to fix the bootloader problem. Fine, I know how to do that. The problem is, I, in a moment of insanity driven by the fact that I work with hardware RAID cards all the time, felt the need to enable the onboard RAID. In retrospect, this was stupid: the onboard raid is a joke, but I'm stuck with it. My question is, if I disable AHCI am I going to lose the RAID information? I haven't been able to find a definitive yes or no anywhere, and I'm not in the mood to find out the hard way.

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  • Full Backup & Restore for Windows Vista

    - by Thomas Matthews
    I'm looking for a freeware or low cost application that will backup everything, including registry on Windows Vista Home Premium and to restore from a CDROM disk. The destination is an external hard drive on USB 2.0. Searching on SuperUser and Stack Overflow show articles, but don't mention full backup of the registry and complete restore using CDROM. I would also like to have compressed output and incremental backups. One article mentions CloneZilla, but their web page says that the incremental feature is not supported. I am using Windows Vista Home Premium, Service Pack 1. I need to backup 200 GB onto a 230 GB drive and would like to have multiple backups (thus the need for compression). Other requirements: Single file restore Quality is more important than performance. Application must run on Windows Vista. Extra: Run as daemon or background task on 4 user system. Thanks

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  • Create and Track Your Own License Keys with PowerShell

    - by BuckWoody
    SQL Server used to have  cool little tool that would let you track your licenses. Microsoft didn’t use it to limit your system or anything, it was just a place on the server where you could put that this system used this license key. I miss those days – we don’t track that any more, and I want to make sure I’m up to date on my licensing, so I made my own. Now, there are a LOT of ways you could do this. You could add an extended property in SQL Server, add a table to a tracking database, use a text file, track it somewhere else, whatever. This is just the route I chose; if you want to use some other method, feel free. Just sharing here. Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk. And this is REALLY important. I include a disclaimer at the end of my scripts, but in this case you’re modifying your registry, and that could be EXTREMELY dangerous – only do this on a test server – and I’m just showing you how I did mine. It isn’t an endorsement or anything like that, and this is a “Buck Woody” thing, NOT a Microsoft thing. See this link first, and then you can read on. OK, here’s my script: # Track your own licenses # Write a New Key to be the License Location mkdir HKCU:\SOFTWARE\Buck   # Write the variables - one sets the type, the other sets the number, and the last one holds the key New-ItemProperty HKCU:\SOFTWARE\Buck -name "SQLServerLicenseType" -value "Processor" # Notice the Dword value here - this one is a number so it needs that. Keep this on one line! New-ItemProperty HKCU:\SOFTWARE\Buck -name "SQLServerLicenseNumber" -propertytype DWord -value 4 New-ItemProperty HKCU:\SOFTWARE\Buck -name "SQLServerLicenseKey" -value "ABCD1234"   # Read them all $LicenseKey = Get-Item HKCU:\Software\Buck $Licenses = Get-ItemProperty $LicenseKey.PSPath foreach ($License in $LicenseKey.Property) { $License + "=" + $Licenses.$License }   Script Disclaimer, for people who need to be told this sort of thing: Never trust any script, including those that you find here, until you understand exactly what it does and how it will act on your systems. Always check the script on a test system or Virtual Machine, not a production system. Yes, there are always multiple ways to do things, and this script may not work in every situation, for everything. It’s just a script, people. All scripts on this site are performed by a professional stunt driver on a closed course. Your mileage may vary. Void where prohibited. Offer good for a limited time only. Keep out of reach of small children. Do not operate heavy machinery while using this script. If you experience blurry vision, indigestion or diarrhea during the operation of this script, see a physician immediately. Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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  • problem with IN clause in SQL

    - by user179056
    Hello, We have observed that there seems to be a maximum number of ids/variables which one can pass in the IN clause of SQL as comma seperated values. To avoid this we are storing all the ids in a table and doing a SELECT within the IN clause. This however means extra database operations to store and retrieve ids. Is there any other way to use IN without SELECT? regards Sameer

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  • Implementing "Generator" support in a custom language

    - by Roger Alsing
    I've got a bit of fettish for language design and I'm currently playing around with my own hobby language. (http://rogeralsing.com/2010/04/14/playing-with-plastic/) One thing that really makes my mind bleed is "generators" and the "yield" keyword. I know C# uses AST transformation to transform enumerator methods into statemachines. But how does it work in other languages? Is there any way to get generator support in a language w/o AST transformation? e.g. Does languages like Python or Ruby resort to AST transformations to solve this to? (The question is how generators are implemented under the hood in different languages, not how to write a generator in one of them)

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  • Google Maps: marker icons are multi over same location, why?

    - by JakiT
    I'm using Google Maps and have the map set to height/width=100%. I noticed that when I resize the browser window, my map marker icons appear to redraw on top of the same location. Meaning, if I should only have 1 map marker icon on "987 Main St", when I resize the browser window - multiple map marker icons are being now draw on top of "987 Main St" that shouldn't be there. Any ideas why this is happening and how to prevent it? UPDATE: Link to actual code

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  • Clear Graphics Object to Black or other RGB

    - by Jimmy
    I am a rank beginner in C#. I am currently using this code: objGraphics.Clear(SystemColors.Control); What I want to do is Clear this object to black (or some other RGB color), and I'm stumped as to how to replace the SystemColors.Control with, preferably, an RGB color spec. I'd probably want to clear to black most of the time. Any help will be much appreciated!

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  • What is the most effective way to create BigInteger instance from int value?

    - by Roman
    I have a method (in 3rd-party library) with BigInteger parameter: public void setValue (BigInteger value) { ... } I don't need 'all its power', I only need to work with integers. So, how can I pass integers to this method? My solution is to get string value from int value and then create BigInteger from string: int i = 123; setValue (new BigInteger ("" + i)); Are there any other (recommended) ways to do that?

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  • Wpf SelectedItem wont work for a Combobox in a ListView

    - by ChristianRo
    Hi there, I´ve got a problem with a Combobox in a ListView. I´ve got a class called "Substrate". This class contains an object of a class called "SubstrateType". I want to show the objects of the class "Substrate" in a Listview. Each property of the "Substrate" is presented in the columns of the Listview. For the different "SubstrateType" I want to use a combobox. In the XAML I tried it like this: <ComboBox Name="CBType" ItemsSource="{Binding ElementName=SettingsSubstrate, Path=TypeList}" SelectedItem="{Binding Path=Substrate.SubstrateType}" DisplayMemberPath="Description"/> In the code-behind I got two ObservableCollections. One for all Substrates and one for all possible SubstrateTypes. The combobox displays all SubstrateTypes if you click on it. But the combobox has no selecteditem if you dont select one. http://i44.tinypic.com/2eakxav.png Thanks in advance.

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  • Code is not running on .click of hyperlink

    - by coffeeaddict
    Code is not running on .click when I have this: $(".cancel").click(function() { alert("got here"); $(this).closest(":dialog").dialog("close"); }); <a class="cancel" href=""><img src="images/cancelButton.gif" border="0" /></a> It's got to be something stupid, but I cannot see it.

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  • .Net OpenXml - Write Word 2007 document

    - by Melursus
    My problem is in two parts. 1. First part How can I, in Word 2007, put an id on a section so I can easy access this section from my code ? Let say I got Name : Here I want to set the name from my c# code 2. Second part How can I, from my c# code, fill this section id ?

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  • Debugging HeapReAlloc failure using GetExceptionCode

    - by Becky Franklin
    Hey folks, Been messing about with this all day and haven't got anywhere so I'm hoping someone can help me - I have a HeapReAlloc method failing with the error ACCESS_VIOLATION, but I'm unsure how to implement a further check using GetExceptionCode as it uses try/catch or exception or something - can someone give me a quick example of how I can use it to narrow down this failure, please? Thanks very much, Becky

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  • Custom UISlider Image disappearing?

    - by Silent
    Hello all i have a custom image to replace the UISLider defult button image, all works fine image shows, it does not clip off. The problem is when i use the slider to move up and down the image dissapears and some how doesnt show up anymore only sometimes. could someone have a fix? CGRect rect = CGRectMake(16.0, 390.0, 297.0, 35.0); slider.frame = rect; UIImage* thumbImage = [UIImage imageNamed:@"thumb.png"]; [slider setThumbImage:thumbImage forState:UIControlStateNormal]; UIImage* leftImage = [UIImage imageNamed:@"SliderLeft.png"]; [slider setMinimumTrackImage:leftImage forState:UIControlStateNormal]; UIImage* rightImage = [UIImage imageNamed:@"SliderRight.png"]; [slider setMaximumTrackImage:rightImage forState:UIControlStateNormal];

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