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  • Fluent NHibernate - Unable to parse integer as enum.

    - by Aaron Smith
    I have a column mapped to an enum with a convention set up to map this as an integer to the database. When I run the code to pull the data from the database I get the error "Can't Parse 4 as Status" public class Provider:Entity<Provider> { public virtual Enums.ProviderStatus Status { get; set; } } public class ProviderMap:ClassMap<Provider> { public ProviderMap() { Map(x => x.Status); } } class EnumConvention:IUserTypeConvention { public void Accept(IAcceptanceCriteria<IPropertyInspector> criteria) { criteria.Expect(x => x.Property.PropertyType.IsEnum); } public void Apply(IPropertyInstance instance) { instance.CustomType(instance.Property.PropertyType); } } Any idea what I'm doing wrong?

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  • Does the Microsoft SQL Server native client support IDBAsynchNotify?

    - by Aaron Klotz
    I'm working on some OLE DB code that runs queries on MS SQL Server via ICommand::Execute. I'm converting this code to operate asynchronously by setting the DBPROPVAL_ASYNCH_INITIALIZE property on the command before executing. I'd prefer to register a IDBAsynchNotify sink so that my code can be notified of events, as opposed to polling or blocking via ISSAsynchStatus. The documentation for ICommand::Execute does not show IConnectionPointContainer as an acceptable riid parameter, but the same document, when discussing the DB_S_ASYNCHRONOUS return code, suggests that it is possible to request an IConnectionPointContainer interface that I could use to register my event sink. When I call ICommand::Execute, passing IID_IConnectionPointContainer as the riid parameter, I receive the E_NOINTERFACE error. I also tried setting the DBPROP_IConnectionPointContainer property before Execute but I received the same results. If I have to, I'll use ISSAsynchStatus, but I'd much rather use IDBAsynchNotify. Is it possible?

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  • Django : presenting a form very different from the model and with multiple field values in a Django-

    - by sebpiq
    Hi ! I'm currently doing a firewall management application for Django, here's the (simplified) model : class Port(models.Model): number = models.PositiveIntegerField(primary_key=True) application = models.CharField(max_length=16, blank=True) class Rule(models.Model): port = models.ForeignKey(Port) ip_source = models.IPAddressField() ip_mask = models.IntegerField(validators=[MaxValueValidator(32)]) machine = models.ForeignKey("vmm.machine") What I would like to do, however, is to display to the user a form for entering rules, but with a very different organization than the model : Port 80 O Not open O Everywhere O Specific addresses : --------- delete field --------- delete field + add address field Port 443 ... etc Where Not open means that there is no rule for the given port, Everywhere means that there is only ONE rule (0.0.0.0/0) for the given port, and with specific addresses, you can add as many addresses as you want (I did this with JQuery), which will make as many rules. Now I did a version completely "handmade", meaning that I create the forms entirely in my templates, set input names with a prefix, and parse all the POSTed stuff in my view (which is quite painful, and means that there's no point in using a web framework). I also have a class which aggregates the rules together to easily pre-fill the forms with the informations "not open, everywhere, ...". I'm passing a list of those to the template, therefore it acts as an interface between my model and my "handmade" form : class MachinePort(object): def __init__(self, machine, port): self.machine = machine self.port = port @property def fully_open(self): for rule in self.port.rule_set.filter(machine=self.machine): if ipaddr.IPv4Network("%s/%s" % (rule.ip_source, rule.ip_mask)) == ipaddr.IPv4Network("0.0.0.0/0"): return True else : return False @property def partly_open(self): return bool(self.port.rule_set.filter(machine=self.machine)) and not self.fully_open @property def not_open(self): return not self.partly_open and not self.fully_open But all this is rather ugly ! Do anyone of you know if there is a classy way to do this ? In particular with the form... I don't know how to have a form that can have an undefined number of fields, neither how to transform these fields into Rule objects (because all the rule fields would have to be gathered from the form), neither how to save multiple objects... Well I could try to hack into the Form class, but seems like too much work for such a special case. Is there any nice feature I'm missing ?

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  • WPF: Soft deletes and binding?

    - by aks
    I have custom objects which implement INotifyProperyChanged and now I'm wondering if it is possible to implement soft delete which would play nicely with binding? Each object would have a IsDeleted property and if this property would be set to true than it would not be displayed in GUI. I was thinking about making a custom markup extension which would decorate Binding class but it hadn't worked out as expected. Now I'm considering using MultiBinding with IsDeleted as one of bound properties so that converter would be able to figure out which object is deleted. But this solution sounds quite complicated and boring. Does anybody have an idea how to implement soft deletes for binding?

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  • WPF - Make two controls the same size

    - by John Michaels
    Is there any way to make two controls that are in different containers the same size in WPF? For example, suppose you have two textboxes: textbox1 and textbox2. Textbox1 is in a grid and its size can grow and shrink when the user resizes the window. Textbox2 is in another part of the window and I need it to always have the same size as textbox1. Is there any way to do this? Keep in mind SharedSizeGroup will not work because the textboxes are in different containers. Also, I've tried binding textbox2's height property to textbox1 and that doesn't seem to work either. Finally, I tried catching textbox1's SizeChanged event, but its Height property is always NaN for some reason.

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  • Find height of ContextMenuStrip before showing it

    - by Nailuj
    I have a ContextMenuStrip (ctMenuMassEdit) that I want to display when left-clicking a button (btnMassEdit). I want the ContextMenuStrip to be displayed above the button, i.e. position (0,-ContextMenuStrip.Height) relative to the button: private void btnMassEdit_Click(object sender, EventArgs e) { ctMenuMassEdit.Show(btnMassEdit, new Point(0, -ctMenuMassEdit.Height)); } However, the Height property is 0 the first time the button is clicked (I assume the ContextMenuStrip isn't created before it is shown the first time), and the result is that the ContextMenuStrip appears on top of the button. The 2nd time I click the button however, it appears in the correct position, so the basic of my logic is at least correct. I tried adding the following before showing the ContextMenuStrip, but it didn't work as hoped: if (!ctMenuMassEdit.Created) { ctMenuMassEdit.CreateControl(); } So, is there a way I can create the ContextMenuStrip before showing it the first time, so I have the correct Height property? I could of course use the hack of showing it, hiding it and showing it again, but that doesn't seem really neat...

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  • Inheritance of Custom Attributes on Abstract Properties

    - by Marty Trenouth
    I've got a custom attribute that I want to apply to my base abstract class so that I can skip elements that don't need to be viewed by the user when displaying the item in HTML. It seems that the properties overriding the base class are not inheriting the attributes. Does overriding base properties (abstract or virtual) blow away attributes placed on the original property? From Attribute class Defination [AttributeUsage(AttributeTargets.Property, Inherited = true, AllowMultiple = false)] public class NoHtmlOutput : Attribute { } From Abstract Class Defination [NoHtmlOutput] public abstract Guid UniqueID { get; set; } From Concrete Class Defination public override Guid UniqueID{ get{ return MasterId;} set{MasterId = value;}} From class checking for attribute Type t = o.GetType(); foreach (PropertyInfo pi in t.GetProperties()) { if (pi.GetCustomAttributes(typeof(NoHtmlOutput), true).Length == 1) continue; // processing logic goes here }

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  • DragDrop-Support of PictureBox-Control

    - by Effdee
    After some searching i figured out how dragdrop is implemented for a picturebox. But there is one thing - the (inherited of course) allowdrop property isn't accessible from code or property window of picturebox class. So to make it work i added following line to my form-load: ((Control)pictureBox1).AllowDrop = true; Why do i have to do that? In msdn it says: "This API supports the .NET Framework infrastructure and is not intended to be used directly from your code." Any explanation appreciated and sorry for my grammar ;)

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  • Question on SyndicationItem - ASP.NET

    - by bobsmith123
    I am trying to understand how to use SyndicationItem to display feed which is RSS 2.0 or Atom compliant. What property of SyndicationItem gives me the entire description of the post. It appears that there is a Summary property but per MSDN, it gives only the Summary. Also I have noticed that in my RSS feed reader, some RSS feeds show only a few lines of description and I have to click and go to the website for the full post. But in some feeds, I can see the full post within the Feed Reader. Can someone explain how all this comes together? PS: My web page lets user enter a RSS feed address and I need to validate if the feed exists. If it does, I need to grab the last x items and show the feed's title and full description

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  • Combining lists but getting unique members

    - by MC
    I have a bit of a special requirement when combining lists. I will try to illustrate with an example. Lets say I'm working with 2 lists of GamePlayer objects. GamePlayer has a property called LastGamePlayed. A unique GamePlayer is identified through the GamePlayer.ID property. Now I'd like to combine listA and listB into one list, and if a given player is present in both lists I'd like to keep the value from listA. I can't just combine the lists and use a comparer because my uniqueness is based on ID, and if my comparer checks ID I will not have control over whether it picks the element of listA or listB. I need something like: for each player in listB { if not listA.Contains(player) { listFinal.Add(player) } } However, is there a more optimal way to do this instead of searching listA for each element in listB?

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  • When Debugging in Xcode what does "out of scope" mean?

    - by Buffernet
    I'm in xcode debugging my iphone application. when i get to a break point and I roll over my object and properties of that object say "out of scope" instead of their respective values. Here's what I do: I have inited a view with nib name (initwithnibname). Then set the property of that view to the object that I want. I have placed the breakpoint in the viewwillappear method. I rollover my reference to the variable that was is my property. All properties in the object say "out of scope" Does anyone know why this is happening?

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  • Apache complex regex crashing with 500 error

    - by digitalspaghetti
    I have been working with an existing website out company has running until I finish developing the new site. I've been asked to add some additional functionality to booking pages that will automatically set a booking button based on passed parameters. The existing working regex is as follows: RewriteRule ^.+-(\d+)\.accommodation$ property_detail.php?id=$1 Which works fine with the url like below and passes through the URL. this-is-the-property-name.1234.accomodation However as a quick shiv, I am trying to do the following: this-is-the-property-name.1234.accomodation?override=true&start_date=2010-05-14&numbernights=2&sleeps=10&price=1012 The regex I came up with for this was: RewriteRule ^.+-(\d+)\.accommodation\?override=(\w+)&start_date=(19|20)[0-9]{2}[- /.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])&numbernights=(\d+)&sleeps=(\d+)&price=(\d+)$ property_detail.php?id=$1&override=$2&start_date=$3-$4-$5&numbernights=$6&sleeps=$7&price=$8 The regex is passing as valid in RegexBuddy - however it keeps causing a 500 error on the server. Can anyone help me get my head around this one?

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  • Detecting if the user selected "All Users" or "Just Me" in a Custom Action

    - by Ben
    Hi, I'm trying to detect if the user has selected the "All Users" or the "Just Me" radio during the install of my program. I have a custom action setup that overrides several methods (OnCommit, OnBeforeInstall, etc.). Right now I'm trying to find out this information during OnCommit. I've read that the property I want to get at is the ALLUSERS property, but I haven't had any luck finding where it would be stored in instance/local data. Does anyone know of a way to get at it? -Ben

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  • I've got a ComboBox that's giving me grief in WPF using the MVVM pattern

    - by Mike
    Here's my code: <ComboBox Grid.Column="1" Grid.Row="9" ItemsSource="{Binding Path=PriorityEntries}" SelectedItem="{Binding Path=Priority,Mode=TwoWay}"/> The comboBox is bound properly with PriorityEntries, and when i change the value of the comboBox the "set" of the bound property(Priority) is called setting it to what it needs to be. However, when i close the UserControl that this combobox resides, it calls the set property again with a value of null and then sets what the selectedItem was to null. Why is the comboBox being bound again when I close the usercontrol. I tried setting the mode to OneTime, but that won't reflect any changes...

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  • NHibernate - mappping composite-id to table with non-composite primary key

    - by Dmitry
    I have table like this: ID - PK; KEY1 - UNIQUE1; KEY2 - UNIQUE1; If I don't want to use ID in my mappings, can I tell NHibernate to use KEY1 & KEY2 as a composite id? When I declare composite id like this: <composite-id> <key-property name="KEY1"/> <key-property name="KEY2"/> </composite-id> I get FKUnmatchingColumnsException (Foreign key ... must have same number of columns as the referenced primary key ...)

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  • Hidden features of WPF and XAML?

    - by Sauron
    Here is a large number of hidden features discussed for variety of languages. Now I am curious about some hidden features of XAML and WPF? One I have found is the header click event of a ListView <ListView x:Name='lv' Height="150" GridViewColumnHeader.Click="GridViewColumnHeaderClickedHandler"> The GridViewColumnHeader.Click property is not listed. Some of relevant features so far: Multibinding combined with StringFormat TargetNullValue to bindings TextTrimming property Markup extensions Adding Aero effect to Window Advanced "caption" properties XAML Converters See also: Hidden features of C# Hidden features of Python Hidden features of ASP.NET Hidden features of Perl Hidden features of Java Hidden features of VB.NET Hidden features of PHP Hidden features of Ruby Hidden features of C And So On........

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  • How can a component at designtime determine the project directory

    - by Heinz Z.
    Hello, I write a component which should store some information relative to the project directory. Every time a property of my component is changed it should write a file. So how can a component determine the current project directory at design time. Thanks in advance EDIT: I want to generate a delphi source file every time a property of my component is changed, so that I always get the latest version when I compile my code. Think of it as a kind of code generator. At the moment I set whole path and filename where the source should be stored but I prefer a relative path to the project (or the form/datamodule which contains my component) to make it easier to copy the project on different developer machines.

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  • wpf DependencyProperty Not accepting default value for short

    - by biju
    Hi, I was trying to use tis depencency property in my code but it gives me error says that Default value type does not match type of property 'MyProperty'.But short should accept 0 as default value.Ans also if i try to give null as default value it works..even if its a non nullabel type.How come this happens.. public short MyProperty { get { return (short)GetValue(MyPropertyProperty); } set { SetValue(MyPropertyProperty, value); } } // Using a DependencyProperty as the backing store for MyProperty. This enables animation, styling, binding, etc... public static readonly DependencyProperty MyPropertyProperty = DependencyProperty.Register("MyProperty", typeof(short), typeof(Window2), new UIPropertyMetadata(0));

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  • How to inject JPA EntityManager using spring

    - by marcos
    Hello all! I have a few questions about jpa + spring integration running on tomcat, i've been looking fo some time and couldn't find any concrete answer, so here it goes: Is it possible to have spring to inject the JPA entityManager object into my DAO class without extending JpaDaoSupport? if yes, does spring manage the transaction in this case? I'm trying to keep spring configuration as simple as possible: <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> <property name="entityManagerFactory" ref="em"/> </bean> <bean id="em" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean"> <property name="persistenceUnitName" value="myPU"/> </bean> EDIT: that was very helpfull, thank you all!

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  • xaml nested class path designer issue

    - by Vlad Bezden
    Hi, I have nested class public class Enums { public enum WindowModeEnum { Edit, New } } In my xaml I reference code: <Style.Triggers> <DataTrigger Binding="{Binding WindowMode}" Value="{x:Static Types1:Enums+WindowModeEnum.Edit}"> <Setter Property="Visibility" Value="Collapsed" /> </DataTrigger> </Style.Triggers> Code compiles and runs properly, however I can't open xaml code in design window. I am getting following error: Type 'Types1:Enums+WindowModeEnum' was not found. at MS.Internal.Metadata.ExposedTypes.ValueSerializers.StaticMemberDocumentValueSerializer.ConvertToDocumentValue(ITypeMetadata type, String value, IServiceProvider documentServices) at MS.Internal.Design.DocumentModel.DocumentTrees.Markup.XamlMarkupExtensionPropertyBase.get_Value() at MS.Internal.Design.DocumentModel.DocumentTrees.DocumentPropertyWrapper.get_Value() at MS.Internal.Design.DocumentModel.DocumentTrees.InMemory.InMemoryDocumentProperty..ctor(DocumentProperty property, InMemoryDocumentItem item) at MS.Internal.Design.DocumentModel.DocumentTrees.InMemory.InMemoryDocumentItem.SetUpItem(DocumentItem item) Same error exist in VS2008, VS2010. Does anybody has any idea, how to deal with it so I can open window in design mode. Thanks a lot. Sincerely, Vlad.

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  • typesafe NotifyPropertyChanged using linq expressions

    - by bitbonk
    Form Build your own MVVM I have the following code that lets us have typesafe NotifyOfPropertyChange calls: public void NotifyOfPropertyChange<TProperty>(Expression<Func<TProperty>> property) { var lambda = (LambdaExpression)property; MemberExpression memberExpression; if (lambda.Body is UnaryExpression) { var unaryExpression = (UnaryExpression)lambda.Body; memberExpression = (MemberExpression)unaryExpression.Operand; } else memberExpression = (MemberExpression)lambda.Body; NotifyOfPropertyChange(memberExpression.Member.Name); } How does this approach compare to standard simple strings approach performancewise? Sometimes I have properties that change at a very high frequency. Am I safe to use this typesafe aproach? After some first tests it does seem to make a small difference. How much CPU an memory load does this approach potentially induce?

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  • ASP.NET Binding integer to CheckBox's Checked field

    - by Sung Meister
    I have a following ListView item template, in which I am trying to bind integer value to Checked property of CheckBox. IsUploaded value contains only 0 and 1... <asp:ListView ID="trustListView" runat="server"> <ItemTemplate> <asp:CheckBox ID="isUploadedCheckBox" runat="server" Checked='<%# Bind("IsUploaded") %>' /> </ItemTemplate> </asp:ListView> But ASP.NET complains that Exception Details: System.InvalidCastException: Sepcified cast is not valid Even though following code using DataBinder.Eval() works, I need to have a 2-way binding, thus need to use Bind(). <asp:CheckBox ID="isUploadedCheckBox2" runat="server" Checked='<%# Convert.ToBoolean( DataBinder.Eval(Container.DataItem, "IsUploaded"))) %>' /> How can I convert 0's and 1's to boolean using Bind()? [ANSWER] I have extended auto-generated type through partial class by adding a new property mentioned in the answer by Justin

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  • Modern way to handle and validate POST-data in MVC 2

    - by zerkms
    There are a lot of articles devoted to working with data in MVC, and nothing about MVC 2. So my question is: what is the proper way to handle POST-query and validate it. Assume we have 2 actions. Both of them operates over the same entity, but each action has its own separated set of object properties that should be bound in automatic manner. For example: Action "A" should bind only "Name" property of object, taken from POST-request Action "B" should bind only "Date" property of object, taken from POST-request As far as I understand - we cannot use Bind attribute in this case. So - what are the best practices in MVC2 to handle POST-data and probably validate it. UPD: After Actions performed - additional logic will be applied to the objects so they become valid and ready to store in persistent layer. For action "A" - it will be setting up Date to current date.

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  • Quickly check which part of the page lifecycle a control is in

    - by Khanzor
    Is there any way to check what events have fired during the asp.net webforms page/control lifecycle? I know that I can manually add handlers for each event, but that seems a bit ... inefficient. Is there a visualiser, or a property that I can check that will tell me whether these events have fired? EDIT The reason I want to know this is that I am overriding the ViewState property of a custom control, and the viewstate disappears at some point, and I'd like to know at which point in the page lifecycle it is being overriden.

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