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• Reference a internal class from a Windows Workflow Activity

  - by Ben Hughes

  I'm creating a custom Workflow activity for use within TFS2010. In the same assembly I have a XAML activity and a C# code activity. The XAML activity references the code activity. When the assembly is deployed to our clients, I only want them to be able to use the Workflow activity. The code activity is of little use by itself and would no doubt confuse them. I thought the logical way to do this would be to set the code activity class to internal: the XAML is in the same assembly and should be able to access it. However, when I do that I get an error in the XAML saying that the assembly can't be found. Is there a way to make activities internal/hidden?

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• Can Hibernate automatically uppercase a column on read/insert via configuration?

  - by T Reddy

  We have some columns with data that must always be in uppercase to ensure uniqueness. I was wondering if hibernate can force all such columns to uppercase via some configuration file change? We actually use a custom UserType for encrypting/decrypting column data for some other table, but I figured that would be overkill just to uppercase everything... Alternatively, I was thinking about modifying the models such that all getters/setters will uppercase any string coming and going. The worst(?) case scenario is to modify the Oracle column constraint to ignore case while checking uniqueness. Any thoughts?

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• WPF: "Items collection must be empty before using ItemsSource."

  - by Zack Peterson

  I'm trying to get images to display in a WPF ListView styled like a WrapPanel as described in this old ATC Avalon Team article: How to Create a Custom View. When I try to populate the ListView with a LINQ-to-Entities queried collection of ADO.NET Entity Framework objects I get the following exception: Exception Items collection must be empty before using ItemsSource. My code… Visual Basic Private Sub Window1_Loaded(...) Handles MyBase.Loaded ListViewImages.ItemsSource = From g In db.Graphic _ Order By g.DateAdded Ascending _ Select g End Sub XAML <ListView Name="ListViewImages" SelectionMode="Single" ItemsSource="{Binding}"> <local:ImageView /> </ListView> I put a breakpoint on that line. ListViewImages.ItemsSource is Nothing just before the LINQ assignment.

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• Open source iPhone components? Reusable views, controllers, buttons, table cells, etc?

  - by Ian Terrell

  Are there any repositories around for open sourced iPhone components? For instance, I have found myself needing to create several new types of table cells to mimic some of Apple's existing functionality (for instance, all the different types of table cells present in the Settings application). I can't imagine I'm alone here. Where do you go to find open sourced reusable components, or do you just write and hoard your own? Update: I know there are open source full projects around (see this question), but rummaging through them and picking and choosing still leads to significant duplication of effort. Update 2: Here are some libraries that I've found (or have come into existence) since asking this question: Three20 -- Custom UI classes used in the Facebook application CocoaHelpers -- Extensions to common classes MBProgressHUD -- Replacement for the undocumented UIProgressHUD

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• How to use browser options in selenium?

  - by Guru1985

  I have a browser which takes certain parameters as options as shown below. testbrowser.exe -id=test -url=http://www.google.com/. Below is my selenium code. selenium = new DefaultSelenium("localhost", 4444, "*custom "+testBrowser+" -id=test -url=", "http://www.google.com/"); selenium.start(); selenium.open("http://www.yahoo.com"); When i execute this i am getting the below error. java.lang.RuntimeException: Could not start Selenium session: Failed to start new browser session: Error while launching browser at com.thoughtworks.selenium.DefaultSelenium.start(DefaultSelenium.java:103) I think the problem is with options that my browser requires as the same code works fine with firefox or IE. Please help me in solving this options issue. Thanks in Advance Gururaj R

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• Integrate Zend translator into my app

  - by clinisbut

  Hello. I wish to use the Translator classes of Zend framework in my app, but I don't want to include the whole framework. I grabbed the: Locale folder Translate folder Exception.php Loader.php Locale.php Registry.php Translate.php and copied into a custom folder named zend.translator. Obviously I had to edit all them to adjust the includes to the new path... Is this the way to go? I'm worried to have to edit all those files every time a new version is released.

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• Invoke a COM addin option from VBA

  - by rip

  Can I invoke an option on a COM Add-in from a VBA macro in Word or Excel 2007? The COM Add-in was written using VSTO – it adds a custom ribbon tab with a number of options that I want to execute from a VBA macro. I can reference the add-in using Application.COMAddIns("MyAddinName") but I can’t find an option to invoke an option. I’ve also played around with the Application.CommandBars collection, and can see that you can execute an option using CommandBarControl.Execute but I can’t find my command bar in the Application.CommandBars collection. Does anyone know if this is possible?

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• How do i handle jcupload and no flash?

  - by acidzombie24

  I am using http://www.jcupload.com/ (basic) to upload files. I am considering having a friend write a more custom version or to do magic with ajax; so the solution should be able to work without that. With jcupload i include css, a script and write <div id="jcupload_content"></div> in my html and i am done. Problem is, with no flash i get an object box. Instead i would like is an iframe or a html form to upload the file. How do i do this? Should i detect flash from javascript and overload the div myself if no flash is available? How do i detect if flash is available? with jquery i know i can write something like $('#jcupload_content').innerHtml = blah; How do i handle the flash part?

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• How do I detect the environment in Salesforce?

  - by Craig Harris

  I am integrating our back end systems with Salesforce using the web services. I have production and stage environments running on different URLs. I need to be able to have the endpoint of the web service call be different depending on whether the code is running in the production or sandbox Salesforce instance. How do I detect the environment. Currently I am considering looking up a user to see if there user name ends in 'devsandbox' as I have been unable to identify a system object that I can query to get the environment. Further clarification: The location I need to determine this is within the Apex code that is invoked when I select a button in Salesforce. My custom controller needs to know if it running in the production or sandbox Salesforce environment.

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• Element binding in Silverlight

  - by Matt

  Where can I find some good documentation on data/element binding? My Google searches haven't turned much up. I had a custom class with two properties named Text and Value. When I tried binding a list to a listbox it wouldn't work. By chance I modifed my datatemplate from this <TextBox Text="{Binding Text}"></TextBox> to this <TextBox Text="{Binding Path=Text}"></TextBox> and then everything worked great. I need some indepth documenation/samples to data/element binding. I don't understand why some examples have the path set whereas others do not. A full explanation of this, and all other nice to know tips would be much appreciated.

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• ScrollBars are not visible after changing positions of controls inside a Canvas

  - by akjoshi

  Hi, I created a custom canvas control inheriting from WPF Canvas. I am using it like this in main window - <ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto"> <RTD:RTDesignerCanvas Margin="5" Background="White" x:Name="canvas1" Focusable="True" AllowDrop="True"> </RTD:RTDesignerCanvas> </ScrollViewer> Everyhting works fine but when I try to set the position of controls inside it like this Canvas.SetTop(item, 200); scrollbars are not visible and control is hiddedn down somewhere. Intrestingly, if I add another control to it scroll bars are visible and I can scroll downwards to see the previous control. I tried to use base.InvalidateVisual(); base.UpdateLayout(); base.InvalidateArrange(); after changing items Top or Left but nothing happens; Am I missing something or this happens due to some bug?

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• create a simple pdf report from html

  - by opensas

  I'm looking for a way to generate pdf files from html In order to make simple tabular reports I would need the following features table rendering variable page size repeating headers / footers on every page calculated page number / total page css support would be nice I know there have been many similar questions in stackoverflow, but I don't know if there's a product that supports the aforementioned features... Ideally, the source would be a plain and simple well built html with css, (I'm building the html files, so I can adapt to the products needs, that is, it won't have to render every piece of html crap you can throw at a browser) and with some custom tags to configure headings, footer, page size, etc... then I would run a command line to convert it from html to pdf. I think http://www.allcolor.org/YaHPConverter/ does something like that

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• How to find missing web part ?

  - by Leonidius

  Does anybody know how to find offending web part which causes this error ? “A Web Part or Web Form Control on this Web Part Page cannot be displayed or imported because it is not registered on this site as safe.” I have inherited an old SharePoint 2003 portal site which uses custom web parts. I know what this error means. I also know that each web part must be installed and registred as safe in web.config. The problem is that I don't know which one is missing. I get same error when I'm trying to open the page in FrontPage as well.

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• Zend_Form -> Nicely change setRequired() validate message

  - by dittonamed

  Say I create a text element like this: $firstName = new Zend_Form_Element_Text('firstName'); $firstName->setRequired(true); Whats the best way to change the default error message from: Value is empty, but a non-empty value is required to a custom message? I read somewhere that to replace the message, just use addValidator(..., instead (NO setRequired), like this: $firstName = new Zend_Form_Element_Text('firstName'); $firstName->addValidator('NotEmpty', false, array('messages'=>'Cannot be empty')); but in my testing, this doesn't work - it doesn't validate at all - it will pass with an empty text field. Using both (addValidator('NotEmp.. + setRequired(true)) at the same time doesn't work either - it double validates, giving two error messages. Any ideas? Thanks!

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• Problems with contenttypes when loading a fixture in Django

  - by gerdemb

  I am having trouble loading Django fixtures into my MySQL database because of contenttypes conflicts. First I tried dumping the data from only my app like this: ./manage.py dumpdata escola > fixture.json but I kept getting missing foreign key problems, because my app "escola" uses tables from other applications. I kept adding additional apps until I got to this: ./manage.py dumpdata contenttypes auth escola > fixture.json Now the problem is the following constraint violation when I try to load the data as a test fixture: IntegrityError: (1062, "Duplicate entry 'escola-t23aluno' for key 2") It seems the problem is that Django is trying to dynamically recreate contenttypes with different primary key values that conflict with the primary key values from the fixture. This appears to be the same as bug documented here: http://code.djangoproject.com/ticket/7052 The problem is that the recommended workaround is to dump the contenttypes app which I'm already doing!? What gives? If it makes any difference I do have some custom model permissions as documented here: http://docs.djangoproject.com/en/dev/ref/models/options/#permissions

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• What is the best way to post data from web browser to server?

  - by Kronass

  Hi, I want to know what is the best way to send data from web browser to server using post method. I've seen a practice where they wrap all the elements data in XML, convert it into Base64 string and then post it to the server (via Ajax or hidden field). this way will not work if the Javascript is disabled, any how if I ignored this. is it a good practice to wrap elements into XML (or create my custom wrapper in general) and post them to server saying it will enhance the maintainability of the code or just stick with the classical way and no need to add unnecessary text in the post.

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• How can I hide a database column in the entity model?

  - by Nick Butler

  Hi. I'm using the Entity Framework 4 and have a question: I have a password column in my database that I want to manage using custom SQL. So I don't want the model to know anything about it. I've tried deleting the property in the Mapping Details window, but then I got a compilation error: Error 3023: Problem in mapping fragments starting at line 1660:Column User.Password in table User must be mapped: It has no default value and is not nullable. So, I made the column nullable in the database and updated the model. Now I get this error: Error 3004: Problem in mapping fragments starting at line 1660:No mapping specified for properties User.Password, User.Salt in Set Users. An Entity with Key (PK) will not round-trip when: Entity is type [UserDirectoryModel.User] Any ideas please? Thanks, Nick

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• Cleanup for control inside a FlowDocument

  - by Thorarin

  I have a custom control that I use inside a FlowDocument. The control uses a System.Drawing.ImageAnimator to display transparent, animated GIF images. Why is this such a pain in the butt in WPF anyway? :P In my original implementation, this was causing memory leaks when a paragraph containing the control was being deleted from the document, because the ImageAnimator kept a reference to the control for event handling. I've now implemented a WeakEventManager pattern which seems to indeed fix the leak itself, but I would like to stop "OnFrameChanged" events from being fired if a particular animated GIF is not currently in the document, instead of relying on the garbage collector to eventually collect the control objects and my event manager to notice that there no longer are valid listeners to the event. Basically, I would like to take a more active role in this and have the control react to being removed from the FlowDocument. Is there some way to do this? I've been unable to find it. OnVisualParentChanged doesn't get fired, because the direct parent (a Paragraph) is unchanged.

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• How to set timeout with python-mechanize?

  - by Michal Cihar

  I'm using python-mechanize to scrape some web sites, which sometime simply don't respond to requests and these requests stay open too long, so I need to limit timeout for these requests. While using urlopen method, the timeout can be set using timeout parameter, but I have not found easy way for doing it with high level API such as submit or click methods. Ideally the timeout would be set just once for whole browser class and all calls would honor that. It would be probably possible to customize this by passing custom request_class to every click and submit call, but this would just pollute the code, so I'm looking for nicer solution for setting timeout for mechanize's browser class (and no, I don't want to change default socket timeout using socket.setdefaulttimeout).

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• NHibernate transaction management in ASP.NET MVC - how should it be done?

  - by adrin

  I am writing a simple ASP.NET MVC using session per request and transaction per request patterns (custom HttpModule). It seems to work properly, but.. the performance is terrible (a simple page loads ~7 seconds). For every http request, graphical resources incuding (all images on the site) a transaction is created and that seems to delay the loading times (without the transactions loading times per one image are ~1-10 ms with transactions they are over 1 second). What is the proper way to manage transactions in ASP.NET MVC + NH stack? When i've put all transactions into my repository methods, for some obscure reasons I got 'implicit transactions' warning in NHProf (the SQL statements were executed outside transaction, even that in code session.Save()/Update()/etc methods were invoked within transaction 'using' scope and before transaction.Commit() call) BTW are implicit transactions really bad?

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• UpdateModel prefix - ASP.NET MVC

  - by Kristoffer Ahl

  I'm having trouble with TryUpdateModel(). My form fields are named with a prefix but I am using - as my separator and not the default dot. <input type="text" id="Record-Title" name="Record-Title" /> When I try to update the model it does not get updated. If i change the name attribute to Record.Title it works perfectly but that is not what I want to do. bool success = TryUpdateModel(record, "Record"); Is it possible to use a custom separator?

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• Loading a UIDatePicker in Landscape on a UINavigationController

  - by Ryan

  I have a custom UINavigationController that supports auto-rotate. I also have a UIDatePicker on one of my views that I throw onto the stack of the Navigation controller. The auto-rotate works if I start the date picker view in portrait and then rotate it. If I try load the date picker view in landscape to begin with, the view is all messed up. It looks like it would if it didn't support rotation and the frame only has about half of the picker visible and off center. I've tried making my own date picker that supports auto-rotate in case that was the problem, I've tried creating two different views and swapping them out, and I've tried changing the view frame size on the ViewWillAppear method. None of them seem to be working for me as of yet. Anyone have any suggestions on how to get the date picker to show up in landscape correctly on a navigation controller? I probably am overlooking something simple and the answer is right in front of me, but I'm not finding it.

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• RadioButtonList.SelectedIndex vs RadioButtonList.SelectedValue

  - by Pinpin

  Out of curiosity, anyone knows the particulars of the internal implementation of ListControl.SelectedIndex = (int) <new valueIndex> VS ListControl.SelectedValue = <new value>.ToString() I'm having difficulties with a custom validation object we've built here to process all validation in one sweep. I suspect using <SelectedValue = > will raise a SelectedIndexChanged event, even though both the value and index remain the same, both before and after the operation. (The ListControl's values are populated declaratively....) As ever, thank you for your time!

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• Wordpress Video Portal

  - by choise

  Hi out there, my challenge is to built a video portal, based on wordpress (blog already started). so in the backend there must be a option to add, tag, descripe videos and in frontend the videos must have a comment function, must be searchable and so on. wordpress gives already a large amout of functionallity and i want to use this, comments for example, but also categorisation and tagging. what is the best practise to built such a "plugin" ? where to start? what to use? custom tables and built everything by myself or can i use the blog functionallity to advantage? hopefully everything is clear, comment if not ;)

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• how to hook up default beforeunload event on an aspx page ?

  - by Nikhil Vaghela

  I have a custom web part placed on one of the application page in SharePoint. This page it seems already have a function which gets executed on windows beforeunload javascript event. My problem is that i too need to execute some client side code (to prompt user for any unsaved changes in my web part) on windows beforeunload event. How can i achieve this ? I mean let the default event be fired as well as call my function also ? Appreciate any help. Nikhil.

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