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  • Value cannot be null in sportstore exampe

    - by Naim
    Hi everyone, I am having this problem when I want to implement IoC for sportstore example. The code public WindsorControllerFactory(){ container = new WindsorContainer( new XmlInterpreter(new ConfigResource("castle")) ); var controllerTypes= from t in Assembly.GetExecutingAssembly().GetTypes() where typeof(IController).IsAssignableFrom(t) select t; foreach (Type t in controllerTypes) container.AddComponentLifeStyle(t.FullName, t, LifestyleType.Transient); } protected override IController GetControllerInstance(Type controllerType) { return (IController)container.Resolve(controllerType); } } The error said that the value cannot be null in the GetControllerInstance Any help will be appreciated ! Thanks! Naim

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  • C# Reflection Question

    - by Jimbo
    This is a scenario created to help understand what Im trying to achieve. I am trying to create a method that returns the specified property of a generic object e.g. public object getValue<TModel>(TModel item, string propertyName) where TModel : class{ PropertyInfo p = typeof(TModel).GetProperty(propertyName); return p.GetValue(item, null); } The code above works fine if you're looking for a property on the TModel item e.g. string customerName = getValue<Customer>(customer, "name"); However, if you want to find out what the customer's group's name is, it becomes a problem: e.g. string customerGroupName = getValue<Customer>(customer, "Group.name"); Hoping someone can give me some insight on this way out scenario - thanks.

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  • node.js - strange behavior of coffeescript compiler

    - by JimBob
    I noticed an unexplainable behavior of the coffeescript compiler for me :) For example: getImage: (req, res) => realty_id = req.query.id if (realty_id?) Result ImageController.prototype.getImage = function(req, res) { var realty_id, _this = this; realty_id = req.query.id; if ((realty_id != null) But actually the last line should be: if ((typeof realty_id !== "undefined" && realty_id !== null)) When I comment out "realty_id = req.query.id" it works well. Has anyone a explanation for that?

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  • Castle Windsor Weak Typed Factory

    - by JeffN825
    In a very very limited number of scenarios, I need to go from an unknown Type (at compile time) to an instance of the object registered for that type. For the most part, I use typed factories and I know the type I want to resolve at compile time...so I inject a Func<IMyType> into a constructor ...but in these limited number of scenarios, in order to avoid a direct call to the container (and thus having to reference Windsor from the library, which is an anti-pattern I'd like to avoid), I need to inject a Func<Type,object>...which I want to internally container.Resolve(type) for the Type parameter of the Func. Does anyone have some suggestions on the easiest/most straightforward way of setting this up? I tried the following, but with this setup, I end up bypassing the regular TypedFactoryFacility altogether which is definitely not what I want: Kernel.Register(Component.For(typeof (Func<Type, object>)).LifeStyle.Singleton.UsingFactoryMethod( (kernel, componentModel, creationContext) => kernel.Resolve(/* not sure what to put here... */))); Thanks in advance for any assistance.

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  • Context Menu SourceControl Error

    - by developer
    Hi All, I am trying to use contextmenu in my textbox control and I want to bind the textbox value to the value selected in context menu,below is my code <Window.CommandBindings> <CommandBinding Command="local:MyPanel.ChangeTextboxValue" Executed="ChangeTextboxValue_Executed"/> </Window.CommandBindings> CODE-BEHIND public static RoutedUICommand ChangeTextboxValue = new RoutedUICommand ("ChangeTextboxValue", "ChangeTextboxValue", typeof(MyPanel)); private void ChangeTextboxValue_Executed(object sender, ExecutedRoutedEventArgs e) { string oldvalue = Convert.ToString(e.Parameter); (((sender as MenuItem).Parent as ContextMenu).PlacementTarget as TextBox).Text = oldvalue; } oldvalue is the value I want the textbox controls value to change to. I am trying to use above code but it gives me the error, 'Object reference not set to an instance of object'. I tried to debug the app and I get ContextMenu as null.. .Any ideas why??

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  • MSMQ empty object on message body

    - by Owen
    Ok, so I'm very VERY new to MSMQ and I'm already confused. I have created a private queue and added a few messages to it, all good so far. BUT when I retrieve the messages back from the queue the message body contains a empty object of the type I added. By this I don't mean that the body is null, it does have a reference to a type of the object that I added, but it's not instantiated so all the properties are in their null or default state. This is the code I use to add to the queue: using (var mQueue = new MessageQueue(QueueName)) { var msg = new Message(observation) { Priority = MessagePriority.Normal, UseJournalQueue = true, AcknowledgeType = AcknowledgeTypes.FullReceive, }; mQueue.Send(msg); } And this is the code that dequeues the messages: using (var mQueue = new MessageQueue(QueueName)) { mQueue.MessageReadPropertyFilter.SetAll(); ((XmlMessageFormatter)mQueue.Formatter).TargetTypes = new[] { typeof(Observation) }; var msg = mQueue.Receive(new TimeSpan(0, 0, 5)); var observation = (Observation)msg.Body; return observation; }

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  • jQuery hide/show div using variables

    - by user295927
    I am a nOOb to jQuery. I want to use variables in jQuery to hide/show divs. what I have so far is: $(document).ready(function(){ $('#listMenu a').click(function () { var getPage = $(this).attr("id"); var getName = $(this).attr("name"); //console.log(getPage); //console.log(getName); $("#" & getName ).show(); }); }); firebug console shows that I have the vars correctly, but I get this error next: this[H].style is undefined [Break on this error] (function(){var R=/((?:((?:([^()]+)...typeof K==="string"?K:K+"px")}})})(); any help is appreciated. sjs

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  • Using database default values with Linq to SQL codewise

    - by Ivo
    I am using Dynamic Data with linq to SQL and SQL Server 2008. I have a GUID column that gets his value from the default value with newguid(). When I set IsDbGenerated to true in the designer it works like a charm. But when I renew table this property is set back to false again. So I added it to the metadata. For some reason it's not being pickup, "00000000-0000-0000-0000-000000000000" is being inserted in database. The displayname and readonly change are being pick up. What am I missing? [MetadataType(typeof(CMS_Data_HistoryMetadata))] public partial class CMS_Data_History { } [TableName("Content")] public class CMS_Data_HistoryMetadata { [DisplayName("Pagina Title")] public object pageTitleBar { get; set; } [ReadOnly(true)] [DisplayName("Versie")] public object version_date { get; set; } [ColumnAttribute(IsDbGenerated = true)] public object entity_id; }

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  • JavaScript function that returns result of ajax call

    - by ilkin
    Hi guys. Help needed. Im writing a function that returns result of ajax call but i did not get any results, i guess it's a scope issue, but is there any way to do it? Here is my code: function Favorites() { var links; $.ajax({ type: "GET", url: "/Services/Favorite.svc/Favorites", data: "{}", contentType: "application/json; charset=utf-8", dataType: "json", cache: false, success: function(msg) { links = (typeof msg.d) == 'string' ? eval('(' + msg.d + ')') : msg.d; } }); return links; };

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  • Insert using stored procedure from nhibernate

    - by jcreddy
    Hi I am using the following code snippets to insert values using stored procedure. the code is executing successfully but no record is inserted in DB. Please suggest with simple example. **---- stored procedure--------** Create PROCEDURE [dbo].[SampleInsert] @id int, @name varchar(50) AS BEGIN insert into test (id, name) values (@id, @name); END **------.hbm file-------** <?xml version="1.0" encoding="utf-8" ?> <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"> <sql-query name="Procedure"> exec SampleInsert :Id,:Name </sql-query> </hibernate-mapping> **--------c# code to insert value using above sp------** ISessionFactory sessionFactory = new Configuration().Configure().BuildSessionFactory(); ISession session = sessionFactory.OpenSession(); IQuery query = session.GetNamedQuery("Procedure"); query.SetParameter("Id", "222"); query.SetParameter("Name", "testsp"); query.SetResultTransformer(new NHibernate.Transform.AliasToBeanConstructorResultTransformer(typeof(Procedure).GetConstructors()[0])); Regards Jcreddy

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  • Reflection: How to get the underlying type of a by-ref type

    - by Qwertie
    I was surprised to learn that "ref" and "out" parameters are not marked by a special attribute, despite the existence of ParameterInfo.IsOut, ParameterInfo.IsIn (both of which are always false as far as I can see), ParameterAttributes.In and ParameterAttributes.Out. Instead, "ref" parameters are actually represented by a special kind of "Type" object and "out" parameters are just ref parameters with an additional attribute (what kind of attribute I don't yet know). Anyway, to make a by-ref argument you call Type.MakeByRefType(), but my question is, if you already have a by-ref type, how do you get back to the original Type? Hint: it's not UnderlyingSystemType: Type t = typeof(int); Console.WriteLine(t.MakeByRefType().UnderlyingSystemType==t); // FALSE

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  • Why not System.Void?

    - by Stewart
    I have no practical reason for knowing this answer, but I'm curious anyway... In C#, trying to use System.Void will produce a compilation error: error CS0673: System.Void cannot be used from C# -- use typeof(void) to get the void type object As I understood it, void is simply an alias of System.Void. So, I don't understand why 'System.Void' can't be used directly as you might with 'string' for 'System.String' for example. I would love to read an explanation for this! Incidentally, System.Void can be successfully used with the Mono compiler, instead of Microsoft's .Net, and there it appears equivalent to using the void keyword. This must therefore be a compiler-enforced restriction rather than a CLR restriction, right?

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  • How do you remove the Bing Disambiguation Dialog via API call?

    - by Justin Dearing
    I am integrating bing maps into a web page. I am calling the GetDirections() method of my VEMap option. and setting the VERouteOptions.ShowDisambiguation property to true when I call VEMap.GetDirections(). So sometimes I get the following dialog: The problem is sometimes the user will enter a second set of directions into my form, and dialog remains. I've done the following to attempt to correct it: // In case the disambiguation dialog a.k.a "" is present from a previous direction search var disambiguationDialogElement = $('#myMap_veplacelistpanel')[0]; if (typeof (disambiguationDialogElement) == "object") { map.DeleteControl(disambiguationDialogElement); } It seems to work, but it feels like a suboptomial approach. Is there a better way to do it?

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  • problem while converting object into datetime in c#

    - by Lalit
    Hi, I am getting string value in object let say "28/05/2010". While i am converting it in to DateTime it is throwing exception as : String was not recognized as a valid DateTime. The Code is: object obj = ((Excel.Range)worksheet.Cells[iRowindex, colIndex_q17]).Value2; Type type = obj.GetType(); string strDate3 = string.Empty; double dbl = 0.0; if (type == typeof(System.Double)) { dbl = Convert.ToDouble(((Excel.Range)worksheet.Cells[iRowindex, colIndex_q17]).Value2); strDate3 = DateTime.FromOADate(dbl).ToShortDateString(); } else { DateTime dt = new DateTime().Date; //////////dt = DateTime.Parse(Convert.ToString(obj)); **dt = Convert.ToDateTime(obj).Date;** strDate3 = dt.ToShortDateString(); } The double star "**" line gets exception.

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  • NHibernate FetchMode

    - by Sandra
    Hi All, I have an object Parent which has a list of Children: class Parent {Id, Name, IList children} class Child {Id, Name} I need to select all parents where there is a condition for their children but I do not want to get duplicate rows (don't want the children details to appear in select list) Here is the code: session.CreateCriteria(typeof(Parent)) .SetFetchMode("children", FetchMode.Select); .CreateCriteria("children").Add(Subqueries.PropertyIn("Id", {1,2,3,4})) .List(); The query adds all proprties of child class to select list which results in duplicate Parents. Is there any way I can select all parents without having the child details in the select list? Thanks

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  • How can the generic method called know the type of the generic return?

    - by Paulo Guedes
    I couldn't find a duplicate for this question for Java, although there are a lot of them for C#. I have this method: public <T> T getSomething() { // } According to the type of T, I will have a different return. For example: String a = getSomething(); int b = getSomething(); For a, my method will return a specific String. For b, it will return a specific int. And so on. It seems that this can be done with typeof() in C#. How can I achieve it in Java?

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  • How to parse JSON string that can be one of two different strongly typed objects?

    - by user852194
    Background: I'm invoking a web service method which returns a JSON string. This string can be of type ASConInfo or ASErrorResponse. Question: Using the DataContractJsonSerializer, how can I convert the returned JSON string to one of those objects? Thanks in advance I have tried the following technique, but it does not work: public static object test(string inputString) { object obj = null; using (MemoryStream ms = new MemoryStream(Encoding.Unicode.GetBytes(inputString))) { DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(object)); obj = ser.ReadObject(ms) as object; } return obj; } [WebMethod] public string TypeChecker() { string str = "{\"Error\":191,\"ID\":\"112345678921212\",\"Length\":15}"; //string strErro = ""; object a = test(str); if (a is ASResponse) { return "ASResponse"; } if (a is ASErrorResponse) { return "ASErrorResponse"; } return "Nothing"; }

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  • Gridview making a column invisable

    - by flyersun
    Hi I have a grid view which is dynamically generated via C# using a DataSet. I'm passing a row ID field (from the database) to the grid view, as this is required when a user clicks to edit a records. However I don't want the user to be able to view the column. I have tried the following but it doesn’t seem to work? Could anyone suggest a way to hide the column or a better way of attaching the information to the grid view row so it can be used at a later stage. c# DataColumn ColImplantCustomerDetailsID = new DataColumn(); ColImplantCustomerDetailsID.ColumnName = "Implant ID"; ColImplantCustomerDetailsID.DataType = typeof(int); ColImplantCustomerDetailsID.Visable = false; <-- visable doens't work here. asp.net

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  • looping through checkboxes and inserting checkbox values to DB

    - by user1150440
    ASPX Page: <asp:ListView ID="lvSubjects" runat="server" > <LayoutTemplate> <asp:PlaceHolder ID="itemPlaceholder" runat="server" /> </LayoutTemplate> <ItemTemplate> <asp:CheckBox ID="cbRegularSubjects" Text=<%# Eval("SubjectName") %> runat="server" /> </ItemTemplate> <AlternatingItemTemplate> <asp:CheckBox ID="cbRegularSubjects" Text=<%# Eval("SubjectName") %> runat="server" /> </AlternatingItemTemplate> </asp:ListView> Code Behind: For Each ctrl As Control In Page.Controls If TypeOf ctrl Is CheckBox AndAlso CType(ctrl, CheckBox).Checked Then '**Here I want to get the text of the check box and insert into the DB** End If Next Where am i going wrong??i do not get any error...but this code is not working for me.

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  • How to format complex chained Linq statements for readibility?

    - by Joan Venge
    I have some code like this: var effects = xElement.Elements ( "Effects" ).Elements ( "Effect" ).Select ( e => new Effect ( ( EffectType ) Enum.Parse ( typeof ( EffectType ), ( string ) e.Elements ( "Type" ).FirstOrDefault ( ) ), e.Elements ( "Options" ).Any ( ) ? e.Elements ( "Options" ).Select ( o => ( object ) o.Elements ( "Option" ).Select ( n => n.Value ).First ( ) ) : null ) ) .ToList ( ); But currently this doesn't look as readable and I am not sure where I should add a new line and/or indent for readability. Any suggestions I could use to make consistent, readable linq blocks?

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  • How to dynamically use the PropertyType reflection attribute to create a respective typed Function<

    - by vsj
    I want to use type returned by PropertyType to create a typed function. I found this similiar http://stackoverflow.com/questions/914578/using-type-returned-by-type-gettype-in-c but this mentions how to create a list but does not mention how we can create a Func<. Please help me out. Pseudocode: PropertyInfo inf = typeof(SomeClass).GetProperty("PropertyName"); Type T=inf.PropertyType; Expression<Func<SomeClass,T>> le = GetPropertyOrFieldByName<SomeClass, T>("PropertyName");

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  • xmlserializer throwing InvalidOperationException

    - by AndyC
    I have an XmlSerializer object, and I have added 2 event handlers to the UnknownElement and UnknownAttribute events, as below: XmlSerializer xs = new XmlSerialiser(typeof(MyClass)); xs.UnknownAttribute += new XmlAttributeEventHandler(xs_UnknownAttribute); xs.UnknownElement += new XmlElementEventHandler(xs_UnknownAttribute); Each of these event handlers basically do the same thing, they print out the node name or the attribute name causing the issue. But for some reason, an InvalidOperationException is getting thrown saying there is an error in the xml document with . I thought these errors would be caught by my events?

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  • Javascript looping only through defined properties of array. How?

    - by Beck
    For example if i'm keeping array of references via id like that: if(typeof channel_boards[misc.channel_id] == 'undefined') { channel_boards[misc.channel_id] = $('<div class="channel" channel_id="'+misc.channel_id+'"></div>').appendTo('#board'); } And then i'm looping through array to find required reference. I'm looping through undefined properties as well. Is it possible to loop only through defined properties? for(i=0;i<channel_boards.length;i++) { if(channel_boards[i] != undefined) { if(channel_boards[i].attr('channel_id') != visible) {channel_boards[i].addClass('hidden_board');} else {channel_boards[i].removeClass('hidden_board');} } } Maybe i should change the way i'm storing references? Via object for example, but how i'll be able to find proper reference via id number.

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  • c# marshaling dynamic-length string

    - by mitsky
    i have a struct with dynamic length [StructLayout(LayoutKind.Sequential, Pack = 1)] struct PktAck { public Int32 code; [MarshalAs(UnmanagedType.LPStr)] public string text; } when i'm converting bytes[] to struct by: GCHandle handle = GCHandle.Alloc(value, GCHandleType.Pinned); stru = (T)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(T)); handle.Free(); i have a error, because size of struct less than size of bytes[] and "string text" is pointer to string... how can i use dynamic strings? or i can use only this: [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]

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  • Receiving an Expectedmessage differs error

    - by Mark
    I am quite new to TDD and am going with NUnit and Moq. I have got a method where I expect an exception, so I wanted to play a little with the frameworks features. My test code looks as follows: [Test] [ExpectedException(ExpectedException = typeof(MockException), ExpectedMessage = "Actual differs from expected")] public void Write_MessageLogWithCategoryInfoFail() { string message = "Info Test Message"; Write_MessageLogWithCategory(message, "Info"); _LogTest.Verify(writeMessage => writeMessage.Info("This should fail"), "Actual differs from expected" ); } But I always receive the errormessage that the error message that the actual exception message differs from the expected message. What am I doing wrong?

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