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  • How to inherit constructors with arguments in .NET?

    - by Soumya92
    I have a "MustInherit" .NET class which declares a constructor with an integer parameter. However, Visual Studio gives me an error when I create any derived class stating that there is no constructor that can be called without any arguments. Is it possible to inherit the constructor with arguments? Right now, I have to use Public Sub New(ByVal A As Integer) MyBase.New(A) End Sub in the derived classes. Is there any way to avoid this?

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  • The concept of an Intent in Android?

    - by Mohit Deshpande
    I don't really understand the use and concept of an Intent. I DO understand that an activity are one visual interface and one endeavour that the user can partake in. I THINK an intent is used to launch and communicate between different activities. If so, then how would you accomplish that? A code sample would be helpful.

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  • ASP.NET MVC 2 - user defined database connection.

    - by J Harley
    Hello, I am looking to port my very basic DBMS software from classic ASP to ASP.net - however the user would need to input the connection details in order to connect to their specific DBMS server. Is this at all possible with ASP.NET MVC (very similar to DSN-less connections in ASP). Cheers, Joel

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  • crazy asp.net error

    - by dominic
    Hi I am having a problem debugging an issue on a website. Everything works locally, the local and server databases are the same The strange thing about the error is that it points to my local dev machine in the error stack. Is that crazy or what, The files are published and being hosted on a server machine and the error is pointing to a line of code on my local dev box. I feel like I am losing the plot. Can someone pls help be clear the air here because this is very weird Error in '/' Application. Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index] System.Collections.ArrayList.get_Item(Int32 index) +10066148 System.Collections.Specialized.NameObjectCollectionBase.BaseGet(Int32 index) +17 System.Web.HttpFileCollection.get_Item(Int32 index) +9 System.Web.HttpFileCollectionWrapper.get_Item(Int32 index) +18 PitchPortal.Web.Binders.DocumentModelBinder.ValidateAndAssignPostedFile(ControllerContext controllerContext, ModelBindingContext bindingContext, Document doc) in C:\Users\Bich Vu\Documents\Visual Studio 2008\Projects\PitchPortal\PitchPortal.Web\Binders\DocumentModelBinder.cs:73 PitchPortal.Web.Binders.DocumentModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) in C:\Users\Bich Vu\Documents\Visual Studio 2008\Projects\PitchPortal\PitchPortal.Web\Binders\DocumentModelBinder.cs:45 System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContext controllerContext, ParameterDescriptor parameterDescriptor) +404 System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContext controllerContext, ActionDescriptor actionDescriptor) +140 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +658084 System.Web.Mvc.Controller.ExecuteCore() +125 System.Web.Mvc.<c_DisplayClass8.b_4() +48 System.Web.Mvc.Async.<c_DisplayClass1.b_0() +21 System.Web.Mvc.Async.<c__DisplayClass81.<BeginSynchronous>b__7(IAsyncResult _) +15 System.Web.Mvc.Async.WrappedAsyncResult1.End() +85 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +51 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +454 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +263

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  • Stop objects from wrapping in Android

    - by jay
    How do I prevent a TextView, or any visual object, from wrapping to the screen and instead being chopped off the sides? Is there some XML attribute or code to do this or is it impossible to have anything overflow from the screen? For example, you have this: But you really want this: Any ideas?

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  • Routing without a controller and action name

    - by Eden
    Hi, I've a very basic ASP.NET MVC application that uses the default routing. Now I need to route all the requests that comes with out a specific URL to one action with a single parameter. Examples: www.myapp.com/2374982 www.myapp.com/3242342 should be routed to the same action: public ActionResult ViewById(intid) .... Thanks, Eden

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  • How does the elliptic-curve version of Diffie-Hellman cryptography work?

    - by cmaduro
    Does the Elliptic curve diffie hellman calculation look any different from the standard one defined here: /* * The basic Diffie-Hellman Key Agreement Equation * * The client initiates * A = g^a mod p * * Sends (g p A) to the server * * The server calculates B * B = g^b mod p * * Sends B back to client * * The client calculates K * K = B^a mod p * * The server calucaltes K * K = A^b mod p * */ Or is it just a specific way of selecting g, a, p and b? How are g,a,p and b selected anyway?

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  • MS Runtime required for app to run, how can I include with setup?

    - by JPJedi
    My application requires access to be installed on the computer or at least the MS Access runtime. Is their a way to include that with the application to check for that component/resource or install it if it isn't? Or would it just be easier to include a link to tell the user where to get the runtime if the error happens? I am using Visual Studio 2008 and the windows form app is written in VB.net. I am currently using click once for the deployment. Thanks

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  • Django ForeignKey created empty?

    - by Scott Willman
    This seems very basic and I must be missing something, but here goes anyways... With two models like so: class School(models.Model): name = models.CharField("Official School Name", max_length=128) address = models.TextField("Address of the School", max_length=256) mascot = models.CharField("Name of the School Mascot", max_length=128) class StudentProfile(models.Model): name = models.CharField(max_length=128) school = models.ForeignKey(School) If the student gets created before the school, how do I give 'school' a default empty value? Is it blank or null or what? Thanks!

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  • Validate xml against xsd using c++

    - by manu
    Hi , i am very new to xml and c++. i want to validate xml against xsd using c++ api.can any one gimme any tutorial link? or sample program.i don want to do using msxml as its works in windows and visual studio. i tried to use xerces and libxml but i have failed.now i am trying using tinyxml. please help me to validate xml against xml schema using c++(not vc++,should work in cross platform) regards, manu

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  • Security of WCF endpoints

    - by Matt
    For the sake of argument, lets say that I've got a basicHttp WCF service. Besides implementing authentication (login/logout methods), what is stopping someone from just cracking open Visual Studio, adding a web reference to my website's service, and then playing playing around with my service? I'm not familiar with a method of stopping someone from doing this. The idea of someone downloading all of my Data/Operation contracts and then start playing around is keeping me up at night, and I like my sleep!

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  • Umbraco 404 error after install

    - by ruz
    I have downloaded and setup umbraco on IIS 7.5. I got a 404 page error when I tried running umbraco with Visual Web Developer 2008 Express Edition. Here is the error: Server Error in '/umbraco4' Application. HTTP Error 404 - Not Found. Version Information: ASP.NET Development Server 9.0.0.0 umbraco4 is the webroot directory where I have setup umbraco I don't have experience working with .net Any help will be appreciated. Thanks!!

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  • String manupulation classic interview questions

    - by user189364
    Hi, I am scheduled to have an onsite interview so I am preparing few basic questions. According to the company profile, they are big on string manipulation questions. So far i am manually coded these functions: 1) String length, copy, concat, remove white space 2) Reverse 3) Anagrams 4) Palindrome Please can some can give me a list of more classic string questions which i can practice before going there.

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  • Swing verify code on event dispatch thread at runtime

    - by Jeff Storey
    Are there any libraries that instrument code to verify that methods called on swing components are called on the event dispatch thread? It probably wouldn't be too difficult to write some basic code for doing this, but I'm sure there are edge cases and whatnot that other people have handled. I'm looking for this at runtime though, not for unit tests. thanks, Jeff

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  • Render web page to picture.

    - by Steck
    I have the string with URL. For example "http://google.com". Is there are any way to download and render this page to picture file? ("test.jpg") I tried to use WebBrowser control, to download and render picture, but it only works when WebBrowser placed in displayed form. In other ways it's render only black rectangle. But i want to render picture without any visual effect (creating, activating form etc.)

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