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• SQL Server CLR Integration to acheive Encryption/Decryption

  - by Aakash

  I have a requirement to store the data in encrypted form in database tables. I want to do it at database level but the problems I am facing: ( a) Data Type of the field should be Varbinary. ( b) Encryption is not supported by Workgroup edition ( c) Is it possible to encrypt Numeric Fields? I want to access the encrypted data in tables to fetch in views and stored procedure for some processing but due to above problems I am not able to. Here is my Environment: Development Platform - ASP.Net,.Net Framework 3.5,Visual studio 2008 Server Operating System - Windows Server 2008 Database - SQL Server 2008 Work group edition I was also thinking to adopt a different approach to resolve this issue (yet to test it's feasibility). I was just wondering if I could create a CLR function (which could take parameters to encrypt and decrypt data using Cryptography types provided in .Net framework) and use the CLR integration feature of SQL Server and call that function from stored procedure and views. I am not sure if I am thinking in right direction? Any advice on this as well please.

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• How to read FoxPro Memo with PHP?

  - by sHiRoKKo

  I have to convert .DBF and .FPT files from Visual FoxPro to MySQL. Right now my script works for .DBF files, it opens and reads them with dbase_open() and dbase_get_record_with_names() and then executes the MySQL INSERT commands. However, some fields of these .DBF files are of type MEMO and therefore stored in a separate files ending in .FPT. How do I read this file? I have found the specifications of this filetype in MSDN, but I don't know how I can read this file byte-wise with PHP (also, I would really prefer a simplier solution). Any ideas?

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• Get Taskbar's Battery and PhoneSignal indicators icons and draw into a picturebox (C#/WindowsMobile)

  - by Christian Almeida

  Hi, Is there any way to get taskbar's battery and phonesignal indicators icons and then draw into a picturebox or something? Why do I need this? I need all screen space available, so all forms are maximized and they cover up the windowsmobile taskbar. But, I have to display information about battery e phone signal strength in just a couple of forms. I know how to get their values (like systeminformation.phonesignalstrength), but what I want is the "current icon", so I don't need to worry about their values. It's just a visual information for the user. In last case, if this is not possible, how to get those icons from windowsmobile shell, so I'll draw them by my self, treating each differente status/values that they assume. (This is what I don't want to do!) Thanks in advance and sorry for my poor english.

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• Technologies used in Remote Administration applications(not RD)

  - by Michael

  I want to know what kind of technologies are used nowadays as underlying screen capture engine for remote administration software like VNC pcAnywhere TeamViewer RAC Remote Administrator etc.. The programming language is not so important as just to know whether a driver needs to be developed which is polling video memory 30 times per second or there are any com objects built in the Windows kernel to help doing this? I'm not interested in 3rd party components for doing this. Do I have to use DirectX facilities? Just want some start point to develop my own screen stream capture engine, which will be less CPU hog.

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• How to Export Images from an Image List in VS2005?

  - by cbuck12000

  Using Visual Studio 2005, is there a way to export the images in an Image List to individual files on my PC? Using the IDE, I select the Image List and view its properties. In the "Images" property, I launch the Images Collection Editor dialog. I can only add and remove images, but I cannot find a way to export an image that is already in the list. Why? The developer who made the original list has left our company and I need the images for an ASP.NET application (will convert to .jpeg). Thank you for the help!

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• C-array to NSData and back

  - by Thor Frølich

  I'm attempting to save a c-style array of Vertex3D structs to an NSData object and get them back when reloading the app: NSData *vert = [NSData dataWithBytes:&vertices length:(sizeof(Vertex3D) * NUM_OF_VERTICES)]; This data is then saved and attempted to be read back into my c-array thusly: vertices = malloc(sizeof(Vertex3D) * NUM_OF_VERTICES); [vert getBytes:&vertices length:(sizeof(Vertex3D) * NUM_OF_VERTICES)]; The above results in “EXC_BAD_ACCESS” followed by: malloc: * error for object 0x48423c0: pointer being freed was not allocated I'm very new to programming so there's probably some fundamental memory management principle I'm unaware of. I have verified that the loaded NSData is identical to the saved one, but it's clear that the transition from c-array to NSData (and back) is not as I intended.

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• Throwing an exception while handling an exception

  - by FredOverflow

  If a destructor throws in C++ during stack unwinding caused by an exception, the program terminates. (That's why destructors should never throw in C++.) If a finally block is entered in Java because of an exception in the corresponding try block and that finally block throws another exception, the first exception is silently swallowed. This question crossed my mind: Could a programming language handle multiple exceptions being thrown at the same time? Would that be useful? Have you ever missed that ability? Is there a language that already supports this? Is there any experience with such an approach? Any thoughts?

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• Can I expose only a portion of one .NET DLL's public classes via a different "API" DLL?

  - by Ben McIntosh

  I am designing a WPF application that uses a DLL with maybe 40 public classes. I need these to be public for a variety of reasons including ease of data binding and obfuscation. I would like to allow other people to use only a portion of these classes as an API for my software. I thought I would create the main library (core.dll) and an API library (coreAPI.dll) with the API DLL to be referenced in a new project. Is there a way to allow coreAPI.dll to expose only a few of the classes that exist in core.dll? It's not so much a security issue as I primarily want to simply hide some of the unwanted classes from the Visual Studio Intellisense. Again, internal classes for the ones I want to hide is not really an option because I need to data bind some of these classes in WPF and for that, they must be public. Are there any other ways of doing this?

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• .NET Active Directory Password Expiration on Windows 2008

  - by Brent Pabst

  Searched SO and Everywhere else, including the .net developers guide to directory services programming book - no luck. I am trying to create a simple password reset web page that allows the user to change their password. The change password portion of the code is working fine. For the users I would also like to display when their current password will expire next. Using the sample code from the book mentioned above I was able to get all of the code setup however, the attribute that is returned is always equal to Long.MinValue and hence cannot be inverted to a positive number, plus this means it did not find the proper domain setting. Does anyone have sample code or references for getting the password expiration in a Windows 2008 or R2 domain environment where password policies can be different for each user?

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• How to generate proxy for a child class when my web service return a parent class?

  - by Amir Borzoei

  Hi * I have a web method like this: public class ParentClass{ public String str1; } public class ChildClass : ParentClass{ public String str2; } public class WebService{ public ParentClass WebMethod(){ return GetFirstChildClass(); //Return a child class } } When I generate proxy for this web service by Visual Studio, VS just generate proxy for ParentClass but I need ChildClass too. For workaround I add a dummy method to WebService that return ChildClass to generate proxy for ChildClass in client. public class WebService{ ... //This is a dummy method to generate proxy for ChildClass in client. public ChildClass DummyWebMethod(){ return null; } } In addition I write web service in java (JAX-WS) and my client is a SilverLight Application. Is there a better solution for this problem? tanx for your help ;)

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• use multiple views in an application

  - by Gaurav Arora

  Hi All, I am new to Iphone programming. So please don't mind if I ask some basic questions. :mad: I want to develop an application where the landing screen will be a login screen and after login application should display a new screen with the list of available categories. And on selecting any category a new screen should appear with the information related to the selected category. Basically I want to display different screens in the applications and my confusion is how can I make different screens with one .xib file? or should I use different .xib files for each screen. If I use different .xib files for each screen then how should I navigate to different screens. Please help in solving this confusion. Thanks in advance Gaurav

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• Something is wrong with this C code to reverse string, but I dont know what ? please help

  - by Harbhag

  Hi all, I am beginnner to programming. I wrote this little program to reverse a string. But if I try to reverse a string which is less than 5 characters long then it gives wrong output. I cant seem to find whats wrong. #include<stdio.h> #include<string.h> int main() { char test[50]; char rtest[50]; int i, j=0; printf("Enter string : "); scanf("%s", test); int max = strlen(test) - 1; for ( i = max; i>=0; i--) { rtest[j] = test[i]; j++; } printf("Reversal is : %s\n", rtest); return 0; }

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• Wrapping a C# service in a console app to debug it.

  - by Jack Smit

  I want to debug a service written in C# and the old fashioned way is just too long. I have to stop the service, start my application that uses the service in debug mode (Visual studio 2008), start the service, attach to the service process and then navigate in my Asp.Net application to trigger the service. I basically have the service running in the background, waiting for a task. The web application will trigger a task to be picked up by the service. What I would like to do is to have a console application that fires the service in an effort for me to debug. Is there any simple demo that anybody knows about? Thank you Jack

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• Inserting snippets from macros

  - by Matt

  In Visual Studio 2008 I had a macro which would insert a snippet and input today's date in one of the replacements. When I try to run this macro in VS 2010 it doesn't work. No matter how I try it will not insert a snippet. When I try the following command: DTE.ExecuteCommand("Edit.InvokeSnippetFromShortcut", "snippetName") This fails with error "Error HRESULT E_FAIL has been returned from a call to a COM component. I tried recording a new macro and when I pressed the keyboard shortcut for inserting a snippet (Ctrl+K, Ctrl+X) VS gave the error "The command Insert Snippet is not currently available." Did MS remove the ability to insert snippets from macros? If so this really is a shame because macros have functionality not found in snippets and vice versa.

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• Webbrowser javascript errors

  - by Gaby

  HI, I use a WebBrowser control to navigate to a html page which contains JavaScript. When I open this page in the IE browser no JavaScript error is shown and the page is displayed and functions perfectly. But when navigating to the same page with the WebBrowser control, a pop-up appears to inform about a Script error. I have tried to suppress the script error with the ScriptErrorsSuppressed property but now another pop-up comes up with the title "Visual Studio Just-In-Time Debugger" and proposes to debug. How can i disable all the errors?

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• learning the Lower levels of computing

  - by Ben

  I am a software developer with four years experience in .Net development, I always like to keep up to date with the latest technologies (.net related normally) being released and love learning them. I didn't however go to university and learnt all I know through helpful colleagues, .Net courses, the internet and good old books. I feel that I am a good developer, but without learning the lower levels of a computer as you would in the first year of a computer related Uni course, I get lost when talking to people about a lot of more technical lower level computing. Is there a book(s) that anyone could recommend, that would cover the lower levels of what is going on when I click "Run" in Visual Studio? I feel out of my depth when my boss says to me "Thats running in the CPU cache" or "you're limited by disk reads there", and would like to feel more confident when talking about how the hardware talks to each other (CPU to RAM etc). Apologise if thats a vague question, or has been asked before (i did check and couldn't find anything on here that answers my question).

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• Using an NSButtonCell with template image in a NSTableView

  - by alloy

  In Interface Builder, I have set the dataCell of one of the columns of my NSTableView instance to be NSButtonCell. This works as expected, however, trying to use a ‘template’ image doesn't yield the expected visual result when clicking the button. How I configure the NSButtonCell: Image: NSRevealFreestandingTemplate Scaling: None Bezel: Bevel Type: Momentary Push In Bordered: false Expected result when clicking the button: Since the image is a ‘template’, the button should render its ‘on’ state. The background, ie the space surrounding the image, should not change. Actual result when clicking the button: No difference in the ‘state’ of the rendered image. The background color changes to white. Even-though I’ve tried my best to make the explanation of the problem as concise as possible, I’ve also made a simple screencast to visually illustrate the problem. And uploaded the demo app.

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• Crystal Reports and Report Viewer runtime question

  - by Spooky2010

  Using vs2008 c#. Howdy, Ive got an application where im trying to decide if i should use the Crystal reports or the Report viewer that comes with the visual studio install. My issue is that while it will run fine on my development machine, a lot of the machines the application will be deployed to in remote locations WONT have the runtime for either crystal reports or the report viewer installed. therefore if i build an application using either of these, and prevent user access to the reports only on the machines that do NOT have the runtimes, can the application run ok, or should i expect crazy errors on install and such Any advice appreciated.

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• Comparing Clojure books

  - by Michiel Borkent

  Currently there is (afaik) one completed Clojure book available: Programming Clojure by Stuart Halloway. Two are being written and partially available at Manning: The Joy of Clojure by Fogus and Houser Clojure in Action by Amit Rathore Another one is about to be published in May: Practical Clojure (The Definitive Guide) by Luke Van der Hart Are these books more or less the same and meant as a general introduction to Clojure? Does it make sense to buy them all, or is there a risk of having three very similar books? Will there be books that go into more specialized areas of Clojure and targetted for 'intermediate' or 'advanced' Clojure programmers?

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• Eclipse IDE's Hello World Cheatsheet seems to have a mistake

  - by Sean

  Hey guys, Just a warning: I'm completely new to Java and am trying to teach myself Android programming. I installed the Eclipse IDE today and tried to walk through the first Java Hello World "cheat sheet," and it didn't work! I was really quite surprised. When it asked me to select the checkbox to create the main() method, there wasn't anything on-screen that looked like a checkbox with "main()" or "method" next to it, so I guessed that maybe what they meant was the "Modifiers" radio button. So I left that checked for "public." It didn't compile and I got red X's next to every folder in my Package Explorer. Has anybody else had this problem? Thanks!

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• What learning habits can you suggest?

  - by Asaf R

  Hi, Our profession often requires deep learning; sitting down and reading, and understanding. I'm currently undergoing an exam period, and I'm looking for ways to learn more effectively. I'm not asking about what to learn, or whether to prefer blogs over books, etc. My question is much more physical than that - What do you do when need to study, and I mean study hard? I'm looking for answers such as I slice my time to 2.5 hours intervals and make a break between them, but never during. I keep a jar of water nearby. I wake up at 6 o'clock sharp and start my day with a session at the gym. What good learning habits did acquire, or wish you had acquired? (I know this isn't strictly programming related, but it is programmers related)

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• WPF : how can i use a picture while i'm showing it?

  - by Roy Gavrielov

  hello, i'm trying to do so but the program throws this exception : An unhandled exception of type 'System.IO.IOException' occurred in mscorlib.dll Additional information: The process cannot access the file 'C:\Users\Roy\documents\visual studio 2010\Projects\Assignment3\Assignment3\bin\Debug\Images\Chrysanthemum.jpg' because it is being used by another process. is there a way to use it while it's open? code : if (imgAddMessage.Source != null) { BitmapImage src = (BitmapImage)imgAddMessage.Source; if (!Directory.Exists("Images")) { Directory.CreateDirectory("Images"); } FileStream stream = new FileStream("Images/" + imageName, FileMode.Create, FileAccess.ReadWrite); JpegBitmapEncoder encoder = new JpegBitmapEncoder(); encoder.Frames.Add(BitmapFrame.Create(src)); encoder.Save(stream); stream.Close(); } thanks.

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• IoC and Design Time

  - by benPearce

  I have a WPF application which I am using to learn MVVM and IoC. The problem is that the Model used by one of the Views expects to pull one of its dependancies in the constructor from an IoC container. When working on this View in the Visual Studio designer it cannot show the design because an exception is being raised in the model. Is there a way around this? Am I pulling my dependancies in the wrong place in code or is there a way I can pass in constructed dependancies, perhaps through Constructor injection. At present the IoC container is setup in code in App.xaml.cs. The IoC container is a roll-your-own taken from this article on MSDN - http://msdn.microsoft.com/en-us/magazine/cc337885.aspx

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• Where did System.Design go?

  - by Nilbert

  I am making a C# project in which I am using ScintillaNet, and it says: The referenced assembly "ScintillaNet" could not be resolved because it has a dependency on "System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" which is not in the currently targeted framework ".NETFramework,Version=v4.0,Profile=Client". Please remove references to assemblies not in the targeted framework or consider retargeting your project. I tried adding a reference to System.Design, but it doesn't exist in my list. Do I need to download it somewhere? I have MS Visual Studio 10.

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• SQL Server - Schema/Code Analysis Rules - What would your rules include?

  - by Randy Minder

  We're using Visual Studio Database Edition (DBPro) to manage our schema. This is a great tool that, among the many things it can do, can analyse our schema and T-SQL code based on rules (much like what FxCop does with C# code), and flag certain things as warnings and errors. Some example rules might be that every table must have a primary key, no underscore's in column names, every stored procedure must have comments etc. The number of rules built into DBPro is fairly small, and a bit odd. Fortunately DBPro has an API that allows the developer to create their own. I'm curious as to the types of rules you and your DB team would create (both schema rules and T-SQL rules). Looking at some of your rules might help us decide what we should consider. Thanks - Randy

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