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• Custom Validation with MVC2 and EF4

  - by csharpnoob

  Hi, on ScottGu's Blog is an Example how to use MVC2 Custom Validation with EF4: http://weblogs.asp.net/scottgu/archive/2010/01/15/asp-net-mvc-2-model-validation.aspx So here the Problem: When the Designer in VS2010 creates the Objects for the DB, along to the example you have to add [MetadataType(typeof(Person_validation))] Annotation to that class. But when i change anything in the Designer all these Annotations are lost. Is it possible to keep self made changes to the edmx file, or is there any better way of applying System.ComponentModel.DataAnnotations to the generated Entities? Thanks.

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• List display names from django models

  - by Ed

  I have an object: POP_CULTURE_TYPES = ( ('SG','Song'), ('MV', 'Movie'), ('GM', 'Game'), ('TV', 'TV'), ) class Pop_Culture(models.Model): name = models.CharField(max_length=30, unique=True) type = models.CharField(max_length=2, choices = POP_CULTURE_TYPES, blank=True, null=True) Then I have a function: def choice_list(request, modelname, field_name): mdlnm = get.model('mdb', modelname.lower()) mdlnm = mdlnm.objects.values_list(field_name, flat=True).distinct().order_by(field_name) return render_to_response("choice_list.html", { 'model' : modelname, 'field' : field_name, 'field_list' : mdlnm }) This gives me a distinct list of all the "type" entries in the database in the "field_list" variable passed in render_to_response. But I don't want a list that shows: SG MV I want a list that shows: Song Movie I can do this on an individual object basis if I was in the template object.get_type_display But how do I get a list of all of the unique "type" entries in the database as their full names for output into a template? I hope this question was clearly described. . .

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• SqlCommand.Dispose() not disposing the SqlParameters in it - Memory Leak - C#.NET

  - by NLV

  Hello I've a windows forms application with MS SQL Server 2005 as the back end. I have written code in the form to call few stored procedures using SqlConnection, SqlCommand objects and i properly dispose everything. I've disposed sqlcommand object by calling oSqlCommand.Dispose() But i witnessed my application consuming huge amount of memory. I basically pass large XML files as SqlParameters. I finally decided to memory profile it using RedGate Memory profiler and i noticed that the System.Data.SqlClient.SqlParameters are not disposed. Any insights on this? Thanks NLV

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• Flash Player 10.1 crash on shared object access

  - by Simon

  Hi all, since updating my Flash Player plugin from 10 to 10.1, I'm seeing a weird crash when accessing shared objects. Flex Builder's debugger pops up and prints a stack trace like this: undefined at flash.net::SharedObject$/getLocal() at my.code::MyClass$/load()[/my/path/to/my/MyClass.as:27] (...) This happens when calling SharedObject.getLocal("someString") for the second time for the same string, though it doesn't always crash. When using another browser on the same machine (not configured as the preferred debugging browser in Flex Builder), Flash Player remains silent. The code is wrapped in a try/catch(Error) block which does not catch this error. I'm using Flex SDK 3.5 and Flex Builder 3 on Mac OS X 10.6.3. Has anyone else seen this? Thanks, Simon

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• C# How can I tell if an IEnumerable is Mutable?

  - by Logan

  I want a method to update certain entries of an IEnumerable. I found that doing a foreach over the entries and updating the values failed as in the background I was cloning the collection. This was because my IEnumerable was backed by some LINQ-SQL queries. By changing the method to take a List I have changed this behavior, Lists are always mutable and hence the method changes the actual objects in the list. Rather than demand a List is passed is there a Mutable interface I can use? // Will not behave as consistently for all IEnumerables public void UpdateYesterday (IEnumerable<Job> jobs) { foreach (var job : jobs) { if (job.date == Yesterday) { job.done = true; } } }

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• Xcode duplicate symbol _main .

  - by Prithvi Raj

  I'm getting the following error in Xcode 3.2.1 on Snow Leopard 10.6.2 whenever I try to compile any iPhone application generated by Appcelerator's Titanium . However , the build error only appears when I select iPhone simulator on the architecture menu , and if I select iPhone device , I am able to run the app on my device . Further , the iPhone simulator launches successfully and executes the program directly from the Titanium environment , which uses Xcode to build . Why is this happening ? ld: duplicate symbol _main in Resources/libTitanium.a(main.o) and /Users/prithviraj/Documents/project/Final/build/iphone/build/Final.build/Debug-iphonesimulator/Final.build/Objects-normal/i386/main.o collect2: ld returned 1 exit status Command /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 failed with exit code 1

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• How to convert SSRS 2008 Server reports to SSRS 2008 Client Reports

  - by Nasser Hajloo

  I have a large SSRS 2008 Server Report Project (more than 200 reports). Currently my companystrategy has been changed and we want to convert these server reports to client reports. All of the Server reports uses Storeprocedures (or in some cases from the SQl Functions) All of them work properly andthere is no problem Beause of project scale it is not a good idea to create all of server reports in client again. SO I want to check How to convert SSRS 2008 Server reports to SSRS 2008 Client Reports? RDL to RDLC. Note : I knowthat Client reports use Dataset And I have to create Dataset. I'm also looking for a way to generate these dataset too.but for now I'm just looking for a way to convert RDL files to RDLC files. If there are anyApplication which can convert RDL XML to RDLC XML let me know. Any help appriciate.

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• Updating a progress bar while wpf data binding is taking place (in c#)

  - by evan

  I bind a large dataset to a WPF list box which can take a long time (more than ten seconds). While the the data is being bound I'd like to display a circular progress bar I can't get the progress bar to show while the data binding is occurring, even though I am trying to do the binding in a backgroundworker. I tested it by making the first line of the backgroundworkd's dowork event a Thread.Sleep(5000) and sure enough the progress bar started spinning for that duration only to freeze while when the binding started. Is this because both the databinding and the UI updating have to occur on the same thread? Any ideas on how to work around it? Thanks for your help!!

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• ASP.Net SSRS Report Viewer 9.0 and Report Viewer 10.0 Side-By-Side

  - by user333541

  We are rolling out a large deployment of SQL Server Reporting Services Reports and our platform is SQL Server 2005 so our Report Server is version 2005 running in Native mode. Our web application uses server reports rendered in the Report Viewer 9.0 control. We want to be able to use local reports based on the 2008 RDL spec to create some dashboard applications. We also would like to use the new report viewer 10.0 to viewer these reports. Is there a way to run these both Side-By-Side in the same project? If so how would we go about that? Create a custom server control?

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• Update EntitySet<> LINQ to SQL references

  - by gtas

  I know that when attaching an entity into a DataContext you have to also attach the related referenced objects manually too. While I'm attaching the EntityRef<'s everything works as expected and my entities are updated to the database. But i have noticed that a problem occurs while trying to attach the EntitySet<'s. I dont use rowversion columns so I'm attaching for every entity on the EntitySet< using original values. Tried just attaching AttachAll() the EntitySet< with no luck and no exception too. There is no exception but the update is not really happening. What am i missing?

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• Android ListView TextSize

  - by zaid

  my listview.xml <?xml version="1.0" encoding="utf-8"?> <RelativeLayout android:id="@+id/RelativeLayout01" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:myapp="http://schemas.android.com/apk/res/zaid.quotes.dlama"> <ListView android:id="@+id/ListView01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_marginBottom="50dp" android:paddingTop="50dp"></ListView> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/Back" android:layout_alignParentBottom="true" android:text="Go Back"></Button> <LinearLayout android:layout_width="wrap_content" android:id="@+id/LinearLayout01" android:layout_height="wrap_content" android:layout_alignParentTop="true"> <com.admob.android.ads.AdView android:id="@+id/ad" android:layout_width="fill_parent" android:layout_height="wrap_content" myapp:backgroundColor="#000000" myapp:primaryTextColor="#FFFFFF" myapp:secondaryTextColor="#CCCCCC" android:layout_alignParentTop="true" /> </LinearLayout> </RelativeLayout> the current size of the text in the listview is large. and i cant seem to figure out how to change the text size.

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• Space partitioning algorithm

  - by Karol Kolenda

  I have a set of points which are contained within the rectangle. I'd like to split the rectangles into subrectangles based on point density (giving a number of subrectangles or desired density, whichever is easiest). The partitioning doesn't have to be exact (almost any approximation better than regular grid would do), but the algorithm have to cope with the large number of points - approx. 200 millions. The desired number of subrectangles however is substantially lower (around 1000). Does anyone knows any algorithm which may help me with this particular task?

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• How to transport an XML fragment in an XML Document

  - by mrwayne

  Hi, I'm using an AJAX system on a web application, and for one of the objects i return, it needs to contain an xml fragment. Unfortunately, being AJAX, i'm sending the values back via XML already. So, at the moment, i have something that looks like this (ignoring the fact the tags arent perfect. <Transport> <Message> <Content><[CDATA...] XML Content in here </Cdata></Content> </Message> </Transport> This has worked pretty well for the last few years, however, now the XML content itself needs to contain its own CDATA tags and its causing me grief because you cannot nest CDATA sections. Is there another way to encode the 'XML Content' internally?

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• Asp.net ADO.NET Entity Framework or ADO.NET

  - by sharru

  I'm starting a new project based on ASP.NET and Windows server. The application is planned to be pretty big and serve large amount of clients pulling and updating high freq. changing data. I have previously created projects with Linq-To-Sql or with Ado.Net. My plan for this project is to use VS2010 and the new EF4 framework. It would be great to hear other programmers options about development with Entity Framework Pros and cons from previous experience? Do you think EF4 is ready for production? Should i take the risk or just stick with plain old good ADO.NET?

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• WPF ComboBox Binding to non string object

  - by Mike L

  I'm using MVVM (MVVM Light Toolkit) and have a property on the view model which exposes a list of objects. The objects contain two properties, both strings, which correlate to an abbreviation and a description. I want the ComboBox to expose the pairing as "abbreviation - description". If I use a data template, it does this easily. I have another property on the view model which represents the object that should display as selected -- the chosen item in the ComboBox. I'm binding the ItemsSource to the list, as it represents the universe of available selections, and am trying to bind the SelectedItem to this object. I'm killing myself trying to figure out why I can't get it to work, and feeling more like a fraud by the hour. In trying to learn why this works, I created the same approach with just a list of strings, and a selected string. This works perfectly. So, it clearly has something to do with the typing... perhaps something in choosing equality? Or perhaps it has to do with the data template? Here is the XAML: <Window x:Class="MvvmLight1.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="300" Width="300" DataContext="{Binding Main, Source={StaticResource Locator}}"> <Window.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="Skins/MainSkin.xaml" /> </ResourceDictionary.MergedDictionaries> <DataTemplate x:Key="DataTemplate1"> <StackPanel Orientation="Horizontal"> <TextBlock TextWrapping="Wrap" Text="{Binding CourtCode}"/> <TextBlock TextWrapping="Wrap" Text=" - "/> <TextBlock TextWrapping="Wrap" Text="{Binding CourtDescription}"/> </StackPanel> </DataTemplate> </ResourceDictionary> </Window.Resources> <Grid x:Name="LayoutRoot"> <ComboBox x:Name="cmbAbbrevDescriptions" Height="35" Margin="25,75,25,25" VerticalAlignment="Top" ItemsSource="{Binding Codes}" ItemTemplate="{DynamicResource DataTemplate1}" SelectedItem="{Binding selectedCode}" /> <ComboBox x:Name="cmbStrings" Height="35" Margin="25" VerticalAlignment="Top" ItemsSource="{Binding strs}" SelectedItem="{Binding selectedStr}"/> </Grid> </Window> And, if helpful, here is the ViewModel: using GalaSoft.MvvmLight; using MvvmLight1.Model; using System.Collections.Generic; namespace MvvmLight1.ViewModel { public class MainViewModel : ViewModelBase { public const string CodesPropertyName = "Codes"; private List<Court> _codes = null; public List<Court> Codes { get { return _codes; } set { if (_codes == value) { return; } var oldValue = _codes; _codes = value; // Update bindings and broadcast change using GalaSoft.Utility.Messenging RaisePropertyChanged(CodesPropertyName, oldValue, value, true); } } public const string selectedCodePropertyName = "selectedCode"; private Court _selectedCode = null; public Court selectedCode { get { return _selectedCode; } set { if (_selectedCode == value) { return; } var oldValue = _selectedCode; _selectedCode = value; // Update bindings and broadcast change using GalaSoft.Utility.Messenging RaisePropertyChanged(selectedCodePropertyName, oldValue, value, true); } } public const string strsPropertyName = "strs"; private List<string> _strs = null; public List<string> strs { get { return _strs; } set { if (_strs == value) { return; } var oldValue = _strs; _strs = value; // Update bindings and broadcast change using GalaSoft.Utility.Messenging RaisePropertyChanged(strsPropertyName, oldValue, value, true); } } public const string selectedStrPropertyName = "selectedStr"; private string _selectedStr = ""; public string selectedStr { get { return _selectedStr; } set { if (_selectedStr == value) { return; } var oldValue = _selectedStr; _selectedStr = value; // Update bindings and broadcast change using GalaSoft.Utility.Messenging RaisePropertyChanged(selectedStrPropertyName, oldValue, value, true); } } /// <summary> /// Initializes a new instance of the MainViewModel class. /// </summary> public MainViewModel() { Codes = new List<Court>(); Court code1 = new Court(); code1.CourtCode = "ABC"; code1.CourtDescription = "A Court"; Court code2 = new Court(); code2.CourtCode = "DEF"; code2.CourtDescription = "Second Court"; Codes.Add(code1); Codes.Add(code2); Court code3 = new Court(); code3.CourtCode = "DEF"; code3.CourtDescription = "Second Court"; selectedCode = code3; selectedStr = "Hello"; strs = new List<string>(); strs.Add("Goodbye"); strs.Add("Hello"); strs.Add("Ciao"); } } } And here is the ridiculously trivial class that is being exposed: using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace MvvmLight1.Model { public class Court { public string CourtCode { get; set; } public string CourtDescription { get; set; } } } Thanks!

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• How to scroll to the bottom of a UITableView on the iPhone before the view appears

  - by acqu13sce

  I have a UITableView that is populated with cells of a variable height. I would like the table to scroll to the bottom when the view is pushed into view. I currently have the following function NSIndexPath *indexPath = [NSIndexPath indexPathForRow:[log count]-1 inSection:0]; [self.table scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionBottom animated:NO]; log is a mutable array containing the objects that make up the content of each cell. The above code works fine in viewDidAppear however this has the unfortunate side effect of displaying the top of the table when the view first appears and then jumping to the bottom. I would prefer it if the table view could be scrolled to the bottom before it appears. I tried the scroll in viewWillAppear and viewDidLoad but in both cases the data has not been loaded into the table yet and both throw an exception. Any guidance would be much appreciated, even if it's just a case of telling me what I have is all that is possible.

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• Nullable One To One Relationships with Integer Keys in LINQ-to-SQL

  - by Craig Walker

  I have two objects (Foo and Bar) that have a one-to-zero-or-one relationship between them. So, Foo has a nullable foreign key reference to Bar.ID and a (nullbusted) unique index to enforce the "1" side. Bar.ID is an int, and so Foo.BarID is a nullable int. The problem occurs in the LINQ-to-SQL DBML mapping of .NET types to SQL datatypes. Since int is not a nullable type in .NET, it gets wrapped in a Nullable<int>. However, this is not the same type as int, and so Visual Studio gives me this error message when I try to create the OneToOne Association between them: Cannot create an association "Bar_Foo". Properties do not have matching types: "ID", "BarID". Is there a way around this?

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• Android - getting from a Uri to an InputStream to a byte array?

  - by AP257

  Hi there I'm trying to get from an Android Uri to a byte array. I have the following code, but it keeps telling me that the byte array is 61 bytes long, even though the file is quite large - so I think it may be turning the Uri string into a byte array, rather than the file :( Log.d(LOG_TAG, "fileUriString = " + fileUriString); Uri tempuri = Uri.parse(fileUriString); InputStream is = cR.openInputStream(tempuri); String str=is.toString(); byte[] b3=str.getBytes(); Log.d(LOG_TAG, "len of data is " + imageByteArray.length + " bytes"); Please can someone help me work out what to do? The output is "fileUriString = content://media/external/video/media/53" and "len of data is 61 bytes". Thanks!

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• multiple key ranges as parameters to a couchdb view

  - by kolosy

  is there a way to send multiple startKey/endKey pairs to a view, akin to the keys: [] array that can be posted for keys? the underlying problem - let's say my documents have "categories" and timestamps. if i want all documents in the "foo" category that have a timestamp that's within the last two hours, it's simple: function (doc) { emit([doc.category, doc.timestamp], null); } and then query as GET server:5894/.../myview?startKey=[foo, |now - 2 hours|]&endkey=[foo, |now|] the problem comes when i want something in categories foo or bar, within the last two hours. if i didn't care about time, i could just pull directly by key through the keys collection. unfortunately, i have no such option with ranges. what i ended up doing in the meantime is rounding the timestamp to two-hour blocks, and then multiplexing the query out: POST server:5894/.../myview keys=[[foo, 0 hours], [foo, 2 hours], [bar, 0 hours], [bar, 2 hours]] it works, but will get messy if i want to go back a large amount of time (in relationship to the blocksize)

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• Validating result of JsonConvert.DeserializeObject (think "try parse") using JSON.Net

  - by Riri

  I have incoming messages that I need to try and parse in my own objects structure. SOme of these are well formed JSON obejcts and some are just nonsense. I use JsonConvert.DeserializeObject<MyObject>(incmoingString); to do this. This however sometimes gives me a exception when the incoming is total garbage. Other times I get a non-complete object structure when the incoming string is kind of OK - and finally it sometimes work. I've wrapped the conversion in a try/catch and than manually validate that I've gotten the properties I need to the deserialized result. Is there a better way to do this?

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• Validating ModelChoiceField in Django forms

  - by Andrey

  I'm trying to validate a form containing a ModelChoiceField: state = forms.ModelChoiceField(queryset=State.objects.all(), empty_label=None) When it is used in normal circumstances, everything goes just fine. But I'd like to protect the form from the invalid input. It's pretty obvious that I must get forms.ValidationError when I put invalid value in this field, isn't it? But if I try to submit a form with a value 'invalid' in 'state' field, I get ValueError: invalid literal for int() with base 10: 'invalid' and not the expected forms.ValidationError. What should I do? I tried to place a def clean_state(self) to check this field but that didn't work plus I don't think this is a good solution, there must be something more simple but I just missed that.

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• boost spirit semantic action parameters

  - by lurscher

  Hi, in this article about boost spirit semantic actions it is mentioned that There are actually 2 more arguments being passed: the parser context and a reference to a boolean ‘hit’ parameter. The parser context is meaningful only if the semantic action is attached somewhere to the right hand side of a rule. We will see more information about this shortly. The boolean value can be set to false inside the semantic action invalidates the match in retrospective, making the parser fail. All fine, but i've been trying to find an example passing a function object as semantic action that uses the other parameters (parser context and hit boolean) but i haven't found any. I would love to see an example using regular functions or function objects, as i barely can grok the phoenix voodoo

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• Exporting to PNG from Adobe Illustrator cutting off edges

  - by Luther Baker

  I created a 40px x 40px image in Adobe Illustrator CS4. I saved as an .ai file and then tried to export as a PNG. Adobe Illustrator automatically crops the background and tightens the export to a rect around all the objects which if fine. In this case, I am not working edge to edge so my image is not quite 40px wide. But, unfortunately, Illustrator is not exporting the entire image. I end up with an image that is 34px wide. Indeed, the icon I draw starts on the left hand side but the right edge of my object cut off. Any ideas why this is happening? I can't imagine Illustrator CS4 can't correctly to export to PNG.

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• HttpRuntime.Cache scavenging default behavior?

  - by Rire1979

  When adding items using the default insert method Insert(key, value) and as such using the default behavior of HttpRuntime.Cache, when does the scavenging take place? The limit on the application pool that hosts my application is 0 (unlimited)... but I see no way to find out how big the cache can get before scavenging occurs? The problem is I am caching a potentially very large amount of data but I have limited memory on the server and I want to avoid recycling of the app pool. I am asking in the context of IIS6 and IIS7. Thank you.

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• jquery dialog - which button opened the dialog?

  - by Dan

  In the example below, how can you use the event and ui objects to detect which link opened the dialog? Can't seem to get $(event.target).attr("title"); to work properly, and I'm having trouble finding documentation on the 'ui object that is passed. Thanks! $( ".selector" ).dialog({ link_title = $(event.target).attr("title"); alert(link_title); }); $("a").live("click", function() { btn_rel = $(this).attr("rel"); $(btn_rel).dialog("open"); }); <a class="btn pencil" rel="#dialog_support_option_form" title="Edit Support Option">Edit</button>

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