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  • How to use derived class shared variables in shared methods of base class

    - by KoolKabin
    Hi guys, I am trying to add shared members in derived classes and use that values in base classes... I have base class DBLayer public shared function GetDetail(byval UIN as integer) dim StrSql = string.format("select * from {0} where uin = {1}", tablename, uin) .... end function end class my derived class class User inherits dblayer public shared tabledname as string = "users" end class class item inherits dblayer public shared tabledname as string = "item" end class class category inherits dblayer public shared tabledname as string = "category" end class currently there is error using the tablename variable of derived class in base class but i want to use it... coz i dun know other techniques... if other solutions are better then u can post it or u can say how can i make it work? confused...

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  • Multiple lines of text to a single map

    - by steven
    I've been trying to use Hadoop to send N amount of lines to a single mapping. I don't require for the lines to be split already. I've tried to use NLineInputFormat, however that sends N lines of text from the data to each mapper one line at a time [giving up after the Nth line]. I have tried to set the option and it only takes N lines of input sending it at 1 line at a time to each map: job.setInt("mapred.line.input.format.linespermap", 10); I've found a mailing list recommending me to override LineRecordReader::next, however that is not that simple, as that the internal data members are all private. I've just checked the source for NLineInputFormat and it hard codes LineReader, so overriding will not help. Also, btw I'm using Hadoop 0.18 for compatibility with the Amazon EC2 MapReduce.

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  • ER Diagram flaws

    - by spacker_lechuck
    I have the following ER Diagram for a bank database - customers may have several accounts, accounts may be held jointly by several customers, and each customer is associated with an account set and accounts are members of one or more account sets. What design rules are violated? What modifications should be made and why? So far, a few flaws I'm not sure about are: 1) Redundant owner-address attribute in AcctSets Entity. 2) This ER does not include accounts with multiple owners with different addresses. My Question is: How would I go about fixing these flaws and/or other flaws that I may be missing from my analysis? Thanks!

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  • Assigning to struct in different class

    - by 4thSpace
    I have a struct in ClassA and want to assign it to the same struct in ClassB (the two structs are the same with different names). ClassA and ClassB are view controllers. Basically, I need to pass this struct to another class. However, structs don't seem to be exposed as members, which means I can't access them. Here is ClassA's struct declared in its header file: typedef struct { NSString *startDate; NSString *endDate; NSString *classId; } selectedItemsClassAStruct; selectedItemsClassAStruct selectedItemsClassA; and the same for ClassB (just with ClassA text replaced) It doesn't appear in code hints for ClassB. I see this error if I try to access it: request for member 'selectedItemsClassBStruct' in something not a structure or union How should it be done?

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  • how to get SSRS 2008 R2 to export/render in Excel 2007 format?

    - by James Manning
    I have a report that has ~1k columns and ~17k rows and I'm trying to render it to Excel 2007 with SSRS 2008 R2 Nov CTP. SSRS team members have mentioned in multiple places that Excel 2007 format is included in 2008 R2, for instance: http://social.msdn.microsoft.com/Forums/en-US/sqlreportingservices/thread/69545568-73cb-4f4c-8f35-44472ba6d013 Now, it's certainly possible that it just hasn't made it into the product yet (at least as of Nov CTP), and if that's the case, that would be good to know, too (and ideally when it would be in the product). The repro report and data (along with attempts showing the existing interface still does Excel 2003 format) are attached to the bottom of this blog post, FWIW: http://cid-456117cf53a42144.spaces.live.com/default.aspx

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  • Interface "not marked with serializable attribute" exception

    - by Joel in Gö
    I have a very odd exception in my C# app: when trying to deserialize a class containing a generic List<IListMember> (where list entries are specified by an interface), an exception is thrown reporting that "the type ...IListMember is not marked with the serializable attribute" (phrasing may be slightly different, my VisualStudio is not in English). Now, interfaces cannot be Serializable; the class actually contained in the list, implementing IListMember, is [Serializable]; and yes, I have checked that IListMember is in fact defined as an interface and not accidentally as a class! I have tried reproducing the exception in a separate test project only containing the class containing the List and the members, but there it serializes and deserializes happily :/ Does anyone have any good ideas about what it could be?

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  • Accessing protected REST endpoint with JQuery

    - by Andy
    I have a site where members login to their account (FormsAuth). I would like to set up a RESTful service that I can access using jQuery. I would like to protect these services using the same FormsAuth. How would a third-party site be able to access these services? They would need to pass in the Principal/Identity to the service, right? I've only seen examples of Basic Authentication (which Twitter uses and jQuery supports). I'm very new to WCT/REST, so not sure how this should be done.

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  • mailbox in PHP How be designed

    - by sandy
    How do I design mailbox in my site ... I am new to the PHP language ... And asked me to design mailbox for each member in my site... As the site contains the members, personal page for each member and the incoming fund that in which he can read private messages as well as send new messages, and also keep the messages sent .. How do I do that ...???? I just want a guideline for the right way .... How do I start to design ..???

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  • Problem building a complete binary tree of height 'h' in Python

    - by Jack
    Here is my code. The complete binary tree has 2^k nodes at depth k. class Node: def __init__(self, data): # initializes the data members self.left = None self.right = None self.data = data root = Node(data_root) def create_complete_tree(): row = [root] for i in range(h): newrow = [] for node in row: left = Node(data1) right = Node(data2) node.left = left node.right = right newrow.append(left) newrow.append(right) row = copy.deepcopy(newrow) def traverse_tree(node): if node == None: return else: traverse_tree(node.left) print node.data traverse_tree(node.right) create_complete_tree() print 'Node traversal' traverse_tree(root) The tree traversal only gives the data of root and its children. What am I doing wrong?

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  • Intercept Properties With Castle Windsor IInterceptor

    - by jeffn825
    Does anyone have a suggestion on a better way to intercept a properties with Castle DynamicProxy? Specifcally, I need the PropertyInfo that I'm intercepting, but it's not directly on the IInvocation, so what I do is: public static PropertyInfo GetProperty(this MethodInfo method) { bool takesArg = method.GetParameters().Length == 1; bool hasReturn = method.ReturnType != typeof(void); if (takesArg == hasReturn) return null; if (takesArg) { return method.DeclaringType.GetProperties() .Where(prop => prop.GetSetMethod() == method).FirstOrDefault(); } else { return method.DeclaringType.GetProperties() .Where(prop => prop.GetGetMethod() == method).FirstOrDefault(); } } Then in my IInterceptor: #region IInterceptor Members public void Intercept(IInvocation invocation) { bool doSomething = invocation.Method.GetProperty().GetCustomAttributes(true).OfType<SomeAttribute>().Count() > 0; } #endregion Thanks.

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  • razor intellisense not working on VS2010 for microsoft.web.helpers

    - by pomarc
    I have VS2010 Premium,.NET4.0, MVC3 Tools Update. I've nugetted microsoft-web-helpers successfully. I cannot get @razor intellisense to recognize the microsoft.web.helpers classes. They do work correctely at runtime, i.e. @Twitter.profile shows a profile, but at design time the statent is seen as an error and no members are shown after "." I've tried to add <add assembly="System.Web.Helpers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> to the <assemblies> element in web.config, but it didn't help. Any idea? thanks.

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  • Is SynchronizationContext.Post() threadsafe?

    - by cyclotis04
    This is a pretty basic question, and I imagine that it is, but I can't find any definitive answer. Is SynchronizationContext.Post() threadsafe? I have a member variable which holds the main thread's context, and _context.Post() is being called from multiple threads. I imagine that Post() could be called simultaneously on the object. Should I do something like lock (_contextLock) _context.Post(myDelegate, myEventArgs); or is that unnecessary? Edit: MSDN states that "Any instance members are not guaranteed to be thread safe." Should I keep my lock(), then?

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  • Help with Role Based Security.

    - by Bill K
    Hello, I'm trying to understand role based security and I have the following method: [PrincipalPermission(SecurityAction.Demand, Role = "Administrators")] static void Test() { //administratos only can call this code } What I wanna do is that only users that are members of the Windows Administrators group can call this code, however, if I do the following, it works: GenericIdentity genericIdentity = new GenericIdentity("test", "test"); GenericPrincipal genericPrincipal = new GenericPrincipal(genericIdentity, new string[] { "Administrators" }); AppDomain.CurrentDomain.SetThreadPrincipal(genericPrincipal); Test(); So, how can I make it work only if the user is in the Administrators windows group? thanks!

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  • Good way to edit the previous defined class in ipython

    - by leo
    Hi, I am wondering a good way to follow if i would like to redefine the members of a previous defined class in ipython. say : I have defined a class intro like below, and later i want to redefine part of the function definition _print_api. Any way to do that without retyping it . class intro(object): def _print_api(self,obj): def _print(key): if key.startswith('_'): return '' value = getattr(obj,key) if not hasattr(value,im_func): doc = type(valuee).__name__ else: if value.__doc__ is None: doc = 'no docstring' else: doc = value.__doc__ return ' %s :%s' %(key,doc) res = [_print(element) for element in dir(obj)] return '\n'.join([element for element in res if element != '']) def __get__(self,instance,klass): if instance is not None: return self._print(instance) else: return self._print_api(klass)

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  • FxCop giving a warning on private constructor CA1823 and CA1053

    - by Luis Sánchez
    I have a class that looks like the following: Public Class Utilities Public Shared Function blah(userCode As String) As String 'doing some stuff End Function End Class I'm running FxCop 10 on it and it says: "Because type 'Utilities' contains only 'static' ( 'Shared' in Visual Basic) members, add a default private constructor to prevent the compiler from adding a default public constructor." Ok, you're right Mr. FxCop, I'll add a private constructor: Private Utilities() Now I'm having: "It appears that field 'Utilities.Utilities' is never used or is only ever assigned to. Use this field or remove it." Any ideas of what should I do to get rid of both warnings?

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  • C#: Put member variables into a list.

    - by David
    Hi all Assuming I have a method which accepts an IList or similar thing as a parameter: public void JiggleMyList(IList<string> list)... Is there an easy way that I can pass in string members of a list of objects? I mean, if for example, I have a list of Person objects which expose a string property called FullName, is there a quick way to stuff the FullNames of all the Person objects into the method parameter, or do I have to create a new List and iterate through the Person objects: List<string> fullNames = new List<string>; foreach (Person person in people) { fullNames.Add(person.FullName); } JiggleMyList(fullNames); I come across this all the time, and it would be nice if there was a shortcut. Many thanks David

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  • PRISM View Injection/Navigation in Same Module

    - by Jeaffrey Gilbert
    This is ModuleInit.cs in Products module public class ModuleInit : IModule { private readonly IUnityContainer _container; private readonly IRegionManager _regionManager; public ModuleInit(IUnityContainer container, IRegionManager regionManager) { _container = container; _regionManager = regionManager; } #region IModule Members public void Initialize() { App app = (App)Application.Current; _regionManager.RegisterViewWithRegion(RegionNames.ModuleRegionProducts, () => _container.Resolve<Views.ProductsCycle>()); } #endregion } Below is button event handler in ProductsCycle.cs to go to another view still within same module: private void btnForward_Click(object sender, RoutedEventArgs e) { IRegion productsRegion = _regionManager.Regions["ModuleRegionProducts"]; var productsListView = _container.Resolve<Views.ProductsList>(); productsRegion.Add(productsListView, "ProductsList"); productsRegion.Activate(productsListView); } State: ProductsCycle page is successfully loaded on first load. Problem: View doesn't changed from ProductCycle page to ProductsList page when btnForward is clicked. I'm using Silverlight 4 and PRISM2. Please your advice, thank you.

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  • CodeContracts: ccrewrite fails with Object reference not set to an instance of an object

    - by Vyas Bharghava
    The below code makes ccrewrite blow up! Ideas? BTW, If you comment out the ActualClass, ccrewrite succeeds... [ContractClass(typeof(TestContracts))] interface ITestInterface { bool IsStarted { get; set; } void Begin(); } class ActualClass : ITestInterface { public bool IsStarted { get; set; } public void Begin() { this.IsStarted = true; } } [ContractClassFor(typeof(ITestInterface))] class TestContracts : ITestInterface { ITestInterface Current { get; set; } private TestContracts() { Current = this; } #region ITestInterface Members bool ITestInterface.IsStarted { get; set; } void ITestInterface.Begin() { Contract.Requires(!Current.IsStarted); Contract.Ensures(Current.IsStarted); } Thanks in advance!

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  • Quick MySQLi security question

    - by Benjamin Falk
    I have a quick MySQLi security related question... For example, take a look at this code (gets in put from the user, checks it against the database to see if the username/password combination exist): $input['user'] = htmlentities($_POST['username'], ENT_QUOTES); $input['pass'] = htmlentities($_POST['password'], ENT_QUOTES); // query db if ($stmt = $mysqli->prepare("SELECT * FROM members WHERE username=? AND password = ?")) { $stmt->bind_param("ss", $input['user'], md5($input['pass'] . $config['salt'])); $stmt->execute(); $stmt->store_result(); // check if there is a match in the database for the user/password combination if ($stmt->num_rows > 0) {} } In this case, I am using htmlentities() on the form data, and using a MySQLi prepared statement. Do I still need to be using mysql_real_escape_string()?

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  • Dynamic notifications using jQuery

    - by sparkymark75
    I'm currently building a homepage for our staff which is to be set as the homepage in their browser. I'm currently building the facility whereby nominated members of staff can send notifications to all staff. These will popup on their home page without the need for them to refresh the page. I've currently got the code below which worked fine for 1 notification, but there may be more than 1 at a time waiting to be shown. I've switched to outputting json but I'm not sure how to modify my code to consume it. I'm using the PeriodicalUpdater and jGrowl plugins to get this functionality, if there's better alternatives then feel free to sugget them. $.PeriodicalUpdater({ url: 'getNotifications.aspx', maxTimeout: 6000, type: 'json' }, function(data) { var message = data; if (message != '') { $.jGrowl(message, { sticky: true }); } }); As an additional piece of functionality, would it be possible to store in a cookie when a user has closed a notification so they don't see it again? Thanks.

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  • How to control a NSView, located in a dedicated NSWindow, from the main NSWindow designed to support

    - by Michael
    Hi, This is probably a simple problem for the high skilled Cocoa programmers, but I can't find how to control the graph in a separate window. I read carefully the Cocoa related books, go through many web notes,but I can't find a solution to my problem. The purpose is to use a dedicated window to draw the I=F(Vg) curves extracted by the GUI from a specific hardware. All the GUI and the hardware works fine ( thanks to the help provided by several members of stackoverflow) , but no way to send the parameters to the NSView to display the results. So far, the GUI class is based on a NSObject, the graphic class is NSView. Any idea, examples, links will be appreciated. Thank you so much. Michael

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  • WCF: Is it safe to override the Client's Dispose method using a partial class?

    - by pdiddy
    I'd like to override the Dispose method of generated proxy (ClientBase) because of the fact that disposing of a proxy calls Close and can throw an exception when the channel is faulted. The only way I came up was to create a partial class to my generated proxy, make it inherit from IDisposable: public partial class MyServiceProxy : IDisposable { #region IDisposable Members public void Dispose() { if (State != System.ServiceModel.CommunicationState.Faulted) Close(); else Abort(); } #endregion } I did some test and my Dispose method is indeed called. Do you see any issue with this strategy? Also, I don't like the fact that I'll have to create this partial class for every generated proxy. It be nice if I was able to make my proxy inherit from a base class...

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  • Accessing structure through pointers [c]

    - by Blackbinary
    I've got a structure which holds names and ages. I've made a linked-list of these structures, using this as a pointer: aNode *rootA; in my main. Now i send **rootA to a function like so addElement(5,"Drew",**rootA); Because i need to pass rootA by reference so that I can edit it in other functions (in my actual program i have two roots, so return will not work) The problem is, in my program, i can't say access the structure members. *rootA->age = 4; for example doesnt work. Hopefully you guys can help me out. Thanks!

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  • adhoc struct/class in C#?

    - by acidzombie24
    Currently i am using reflection with sql. I find if i want to make a specialize query it is easiest to get the results by creating a new class inheriting from another and adding the 2 members/columns for my specialized query. Then due to reflections in the lib in my c# code i can write foreach(var v in list) { v.AnyMember and v.MyExtraMember) Now instead of having the class scattered around or modifying my main DB.cs file can i define a class inside a function? I know i can create an anonymous object by writing new {name=val, name2=...}; but i need a to pass this class in a generic function func(query, args);

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  • Purchase music from iTunes store without leaving app?

    - by chris.o.
    Hi all, Is anyone aware of a standard way of allowing a user to purchase music from the app store without leaving the app? For instance, if a band has an album for sale on iTunes and then releases an iPhone game featuring the band members, is there a "standard way" to allow the user to buy songs without leaving the app? From what I can tell, there is not and, given that in the example above, the album is not content specifically for the app, it would not qualify for In-App purchase. Any suggestions? Thanks, Chris

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