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  • Question How to integrate SQL Server Express with VS C# Express

    - by paul
    I have just installed VS C# Express 2008 which includes SQL Server Express 2008. It all went ok and I can see VS C# and SQL Server in the list of installed products. When I start VS C# it looks fine but in the DB Explorer / Data Conection context menu the option 'Create new SQL Server Database' is disabled. I have uninstalled all VS products and reinstalled but the problem remains. Do I need to do anything else? Can anyone help? Thanks

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  • Manual hunk editing in git interactive mode

    - by kRON
    In manual hunk edit mode, the docs say this: # To remove '-' lines, make them ' ' lines (context). # To remove '+' lines, delete them. # Lines starting with # will be removed. What I don't understand is how to remove '-' lines. Say if I had had this bit of code: Alfa Bejta And I've edited it in my working tree to: Alpha Beta The diff is: - Alfa - Bejta + Alpha + Beta How do I edit the hunk to only commit the modifications to the first line? I've tried these: - Alfa Bejta + Alpha - Alfa + Alpha Bejta to no avail.

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  • How do I create an instance of this class in Android?

    - by Lloyd Banks
    I was wondering if it is possible to create an instance of this class (from the link, which creates a listview) from another class so that I can call on either lazyadapter.java or customizedlistview.java (not sure which one) to inflate that same listview. Is this possible? This is what I tried (obviously incorrect): CustomizedListView clv = new CustomizedListView(); clv.onCreate(...); source: http://www.androidhive.info/2012/02/android-custom-listview-with-image-and-text/ LazyAdapter.java import java.util.ArrayList; import java.util.HashMap; import android.app.Activity; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.TextView; public class LazyAdapter extends BaseAdapter { private Activity activity; private ArrayList&lt;HashMap&lt;String, String&gt;&gt; data; private static LayoutInflater inflater=null; public ImageLoader imageLoader; public LazyAdapter(Activity a, ArrayList&lt;HashMap&lt;String, String&gt;&gt; d) { activity = a; data=d; inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); imageLoader=new ImageLoader(activity.getApplicationContext()); } public int getCount() { return data.size(); } public Object getItem(int position) { return position; } public long getItemId(int position) { return position; } public View getView(int position, View convertView, ViewGroup parent) { View vi=convertView; if(convertView==null) vi = inflater.inflate(R.layout.list_row, null); TextView title = (TextView)vi.findViewById(R.id.title); // title TextView artist = (TextView)vi.findViewById(R.id.artist); // artist name TextView duration = (TextView)vi.findViewById(R.id.duration); // duration ImageView thumb_image=(ImageView)vi.findViewById(R.id.list_image); // thumb image HashMap&lt;String, String&gt; song = new HashMap&lt;String, String&gt;(); song = data.get(position); // Setting all values in listview title.setText(song.get(CustomizedListView.KEY_TITLE)); artist.setText(song.get(CustomizedListView.KEY_ARTIST)); duration.setText(song.get(CustomizedListView.KEY_DURATION)); imageLoader.DisplayImage(song.get(CustomizedListView.KEY_THUMB_URL), thumb_image); return vi; } } CustomizedListView.java import java.util.ArrayList; import java.util.HashMap; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.NodeList; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ListView; public class CustomizedListView extends Activity { // All static variables static final String URL = "http://api.androidhive.info/music/music.xml"; // XML node keys static final String KEY_SONG = "song"; // parent node static final String KEY_ID = "id"; static final String KEY_TITLE = "title"; static final String KEY_ARTIST = "artist"; static final String KEY_DURATION = "duration"; static final String KEY_THUMB_URL = "thumb_url"; ListView list; LazyAdapter adapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ArrayList&lt;HashMap&lt;String, String&gt;&gt; songsList = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;(); XMLParser parser = new XMLParser(); String xml = parser.getXmlFromUrl(URL); // getting XML from URL Document doc = parser.getDomElement(xml); // getting DOM element NodeList nl = doc.getElementsByTagName(KEY_SONG); // looping through all song nodes &lt;song&gt; for (int i = 0; i &lt; nl.getLength(); i++) { // creating new HashMap HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); Element e = (Element) nl.item(i); // adding each child node to HashMap key =&gt; value map.put(KEY_ID, parser.getValue(e, KEY_ID)); map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE)); map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST)); map.put(KEY_DURATION, parser.getValue(e, KEY_DURATION)); map.put(KEY_THUMB_URL, parser.getValue(e, KEY_THUMB_URL)); // adding HashList to ArrayList songsList.add(map); } list=(ListView)findViewById(R.id.list); // Getting adapter by passing xml data ArrayList adapter=new LazyAdapter(this, songsList); list.setAdapter(adapter); // Click event for single list row list.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position, long id) { } }); } }

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  • Is there "native" support for JSON in JDK6 Script Engine?

    - by Ayman
    I'm using JDK6the standard Scripting. I need to store and retrieve some JavaScript Objects that also contain Java Objects to JSON. I loaded the json2.js into the ScriptENgine and can use it fine without issue if the objects are all created in the Scrip Engine. The moment I try to use my own Java classes, I get some errors like "object does not support toJSON" errors. I did not find much about JSON in Java Scripting / Rhino context. Am I doing something totally wrong? What's the best way of achieving the requirement?

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  • Using CGContext to display a sprite sheet iPhone

    - by Mike
    Hello, So I have a spritesheet in png format, and have already worked out the coordinates for what I want to display. I'm trying to create a method that will return a UIImage when passed the location information on the spritesheet. I'm just not sure how to use the CGContext stuff along with the the coordinates to return an UIImage. I was looking to CGContextClipToRect because I think that is the way to do it, but I just can't seem to get it to work. Something like this CGSize size = CGSizeMake(xSize, ySize); UIGraphicsBeginImageContext(size); //CGContextClipToRect(spriteSheet.size, imageRect); [spriteSheet drawAtPoint:CGPointMake(xPos, yPos)]; UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return scaledImage; returns only what is in the size Context. I need to be able to "move" this size window around the spritesheet if that makes sense. Any help would be appreciated. Thanks, Mike

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  • Could an ontology suitably replace an RDBMS for a web app?

    - by Thomas
    I'm considering storing the content of a web app in an RDF or OWL ontology instead of an RDBMS. However, when I research ontologies they seem to always exist in the context of publicly accessible data stores serving as the backbone of the semantic web. I've never heard of them being used as the content engine behind a web app. Is it reasonable to use an ontology instead of an RDBMS for such an application? (Again, this is just for content. User data, commerce and stuff like that will stay in a database as I see no need to reinvent the wheel there.)

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  • fastest (low latency) method for Inter Process Communication between Java and C/C++

    - by Bastien
    Hello, I have a Java app, connecting through TCP socket to a "server" developed in C/C++. both app & server are running on the same machine, a Solaris box (but we're considering migrating to Linux eventually). type of data exchanged is simple messages (login, login ACK, then client asks for something, server replies). each message is around 300 bytes long. Currently we're using Sockets, and all is OK, however I'm looking for a faster way to exchange data (lower latency), using IPC methods. I've been researching the net and came up with references to the following technologies: - shared memory - pipes - queues but I couldn't find proper analysis of their respective performances, neither how to implement them in both JAVA and C/C++ (so that they can talk to each other), except maybe pipes that I could imagine how to do. can anyone comment about performances & feasibility of each method in this context ? any pointer / link to useful implementation information ? thanks for your help

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  • Internet connection in android emulator always displays connected state

    - by ganesh
    hi I tried in many ways to check Internet connection in my android emulator ConnectivityManager conMgr = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo info= conMgr.getActiveNetworkInfo(); if(info != null || info.isConnected()) { Log.v("NetworkInfo","Connected State"); } else{ Log.v("NetworkInfo","Not Connected state"); Log.v("Reason",info.getReason()); } even if i disable Internet connection in my system ,my code seems to display Connected state so i guessed this may work if ( conMgr.getNetworkInfo(1).getState() == NetworkInfo.State.CONNECTED || conMgr.getNetworkInfo(0).getState() == NetworkInfo.State.CONNECTED ) { Log.v("Congr","Connection Present"); } else if ( conMgr.getNetworkInfo(1).getState() == NetworkInfo.State.DISCONNECTED || conMgr.getNetworkInfo(0).getState() == NetworkInfo.State.DISCONNECTED) { Log.v("conMgr"," No Connection"); } but the above code also displays "Connection Present" even when i disconnect Internet cables. .Please help to find a correct way to do this .I have ACCESS_NETWORK_STATE and INTERNET permission in my manifest file

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  • MS CRM - getting the field that caused a form save

    - by CraigF
    I have a MS CRM 4 form where when certain fields are changed, I need those fields to be written to an excel sheet. So, I edited the form field onchange event to call crmform.save() which triggers a plugin to run that writes the field value to a named range (1 cell) of an excel sheet. However, I don't know which field caused the save. Is there a way to get that information? (Not all fields on the form need to go to the excel sheet) If I use this: DynamicEntity target = (DynamicEntity)Context.InputParameters[ParameterName.Target]; I can look at specific fields, but I have no way of knowing which ones changed. Any suggestions?

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  • Resolving HttpRequestScoped Instances outside of a HttpRequest in Autofac

    - by Page Brooks
    Suppose I have a dependency that is registered as HttpRequestScoped so there is only one instance per request. How could I resolve a dependency of the same type outside of an HttpRequest? For example: // Global.asax.cs Registration builder.Register(c => new MyDataContext(connString)).As<IDatabase>().HttpRequestScoped(); _containerProvider = new ContainerProvider(builder.Build()); // This event handler gets fired outside of a request // when a cached item is removed from the cache. public void CacheItemRemoved(string k, object v, CacheItemRemovedReason r) { // I'm trying to resolve like so, but this doesn't work... var dataContext = _containerProvider.ApplicationContainer.Resolve<IDatabase>(); // Do stuff with data context. } The above code throws a DependencyResolutionException when it executes the CacheItemRemoved handler: No scope matching the expression 'value(Autofac.Builder.RegistrationBuilder`3+<c__DisplayClass0[MyApp.Core.Data.MyDataContext,Autofac.Builder.SimpleActivatorData,Autofac.Builder.SingleRegistrationStyle]).lifetimeScopeTag.Equals(scope.Tag)' is visible from the scope in which the instance was requested.

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  • Problem with Hyperic monitoring on CloudFoundry - frequent alerts

    - by Pavel P
    Hi, I'm running single instance CloudFoundry configuration with one web application. I turned on Hyperic monitoring with notification for case of web app unavailability. Now I randomly receive alert emails (Subject "An alert has been triggered - Deployment myapp - context unavailable") that the application is not running, but it obviously is running fine. In access log of Apache I see two requests every 15 seconds: 127.0.0.1 - - [17/Mar/2010:15:37:33 +0100] "GET /server-status?auto HTTP/1.1" 200 438 "-" "Jakarta Commons-HttpClient/3.1" 127.0.0.1 - - [17/Mar/2010:15:37:33 +0100] "GET /myapp HTTP/1.1" 200 - "-" "Jakarta Commons-HttpClient/3.1" At the time when I get the alert emails, everything in log still seems to be fine - two requests. Do you have idea what could be wrong? Did anybody have this kind of problem and solve it? Thanks, P

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  • .Net 3.5 Chart Controls Exception

    - by ChrisHDog
    I am using the new free .net chart controls and they appear to work fine when I run the project up in visual studio, but when hitting the same via IIS I get and exception: [HttpException (0x80004005): No http handler was found for request type 'GET'] System.Web.HttpApplication.MapIntegratedHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig, Boolean convertNativeStaticFileModule) +529 System.Web.HttpServerUtility.Execute(String path, TextWriter writer, Boolean preserveForm) +947 [HttpException (0x80004005): Error executing child request for ChartImg.axd.] System.Web.HttpServerUtility.Execute(String path, TextWriter writer, Boolean preserveForm) +4120098 System.Web.UI.DataVisualization.Charting.ChartHttpHandler.EnsureInitialized(Boolean hardCheck) +266 System.Web.UI.DataVisualization.Charting.Chart.GetImageStorageMode() +25 System.Web.UI.DataVisualization.Charting.Chart.Render(HtmlTextWriter writer) +133 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +240 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +240 System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +253 System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output) +87 System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +53 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +240 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +240 System.Web.UI.Page.Render(HtmlTextWriter writer) +38 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4240 Any idea what I'm doing wrong? Thanks!

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  • C# MVC: User Password Reset Controller: Issues with email addresses as usernames

    - by 109221793
    Hi guys, I have written the code below for resetting users passwords (am using the aspnet membership api) in an C# MVC application, and tested successfully on a sample tutorial application (MVC Music Store). Skip to the end if you wish to read problem description first. InactiveUsers View (Partial View) <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<System.Web.Security.MembershipUserCollection>" %> <table class="normal" style="width: 100%; background-color: White;"> <tr> <th>User Name</th> <th>Last Activity date</th> <th>Locked Out</th> </tr> <%foreach (MembershipUser user in Model){ %> <tr> <td><%: Html.RouteLink(user.UserName, "AdminPassword", new { username = user.UserName }) %></td> <td><%: user.LastActivityDate %></td> <td><%: user.IsLockedOut %></td> </tr> <% }%> </table> InactiveUsers Controller public ActionResult InactiveUsers() { var users = Membership.GetAllUsers(); return View(users); } changeUserPassword GET and POST Controllers public ActionResult changeUserPassword(string username) { ViewData["username"] = username; return View(); } [HttpPost] public ActionResult changeUserPassword(ChangePasswordModel model, FormCollection values) { string username = values["username"]; string password = values["password"]; string confirmPassword = values["confirmPassword"]; MembershipUser mu = Membership.GetUser(username); if (password == confirmPassword) { if (mu.ChangePassword(mu.ResetPassword(), password)) { return RedirectToAction("Index", "ControlPanel"); } else { ModelState.AddModelError("", "The current password does not meet requirements"); } } return View(); } I also modified the Global.asax.cs file to cater for my route in the InactiveUsers partial: // Added in 10/01/11 RouteTable.Routes.MapRoute( "AdminPassword", // routename "ControlPanel/changeUserPassword/{username}", new { controller = "ControlPanel", action = "changeUserPassword", username = UrlParameter.Optional } ); // END Now, when I tested on the MVC Music Store, all of my usernames were just words, e.g. Administrator, User, etc. However now I am applying this code to a situation in my workplace and it's not working out quite as planned. The usernames used in my workplace are actually email addresses and I think this is what is causing the problem. When I click on the RouteLink in the partial InactiveUsers view, it should bring me to the reset password page with a url that looks like this: http://localhost:83/ControlPanel/changeUserPassword/[email protected], HOWEVER, what happens when I click on the RouteLink is an error is thrown to say that the view changeUserPassword cannot be found, and the URL looks like this: http://localhost:83/ControlPanel/changeUserPassword/example1%40gmail.com - See how the '@' symbol gets messed up? I've also debugged through the code, and in my GET changeUserPassword, the username is populating correctly: [email protected], so I'm thinking it's just the URL that's messing it up? If I type in the URL manually, the changeUserPassword view displays, however the password reset function does not work. An 'Object reference not set to an instance of an object' exception is thrown at the if (mu.ChangePassword(mu.ResetPassword(), password)) line. I think if I could solve the first issue (URL '@' symbol problem) it might help me along with my second issue. Any help would be appreciated :) Stack Trace - as requested 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: [InvalidOperationException: The view 'changeUserPassword' or its master was not found. The following locations were searched: ~/Views/ControlPanel/changeUserPassword.aspx ~/Views/ControlPanel/changeUserPassword.ascx ~/Views/Shared/changeUserPassword.aspx ~/Views/Shared/changeUserPassword.ascx] System.Web.Mvc.ViewResult.FindView(ControllerContext context) +495 System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +208 System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +39 System.Web.Mvc.<>c__DisplayClass14.<InvokeActionResultWithFilters>b__11() +60 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +391 System.Web.Mvc.<>c__DisplayClass16.<InvokeActionResultWithFilters>b__13() +61 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +285 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +830 System.Web.Mvc.Controller.ExecuteCore() +136 System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +111 System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +39 System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__4() +65 System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +44 System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +42 System.Web.Mvc.Async.WrappedAsyncResult`1.End() +141 System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +54 System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +52 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +38 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8841105 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184

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  • Visual Studio 2010 does not discover new unit tests

    - by driis
    I am writing some unit tests in Visual Studio 2010. I can run all tests by using "Run all Tests in Current Context". However, if I write a new unit test, it does not get picked up by the environment - in other words, I am not able to find it in Test List Editor, by running all tests, or anywhere else. If I unload the project and then reload it; the new test is available to run. When I am adding a unit test, I simply add a new method to an already existing TestClass and decorating it with [TestMethod] attribute - nothing fancy. What might be causing this behaviour, and how do I make it work ?

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  • How do I get a TextBox to only accept numeric input in WPF?

    - by Giffyguy
    I'm looking to accept digits and the decimal point, but no sign. I've looked at samples using the NumericUpDown control for WinForms, and this sample of a NumericUpDown custom control from Microsoft. But so far it seems like NumericUpDown (supported by WPF or not) is not going to provide the functionality that I want. The way my app is designed, nobody in their right mind is going to want to mess with the arrows. They don't make any practical sense, in the context of my app. So I'm looking for a simple way to make a standard WPF TextBox accept only the characters that I want. Is this possible? Is it practical? Thanks, SO!

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  • jQuery - ajax page load - php scope

    - by Develman
    I am using jquery.tabs() and want to load the pages of the tabs with ajax. I am using MVC pattern with PHP and used a frontcontroller / pagecontroller pattern. The templating is done by PHP, e.g.: <?php if($this->userLoggedIn == TRUE): ?> <span>Herzlich Willkommen <?php echo $this->userName; ?>! [<a href="logout">Ausloggen</a>] </span> <?php endif; ?> The variables ($this-userName) are injected by the pagecontroller class. The problem is, that when I load a page via ajax, the variables are not known. Following PHP error is coming up: Fatal error: Using $this when not in object context.... Any idea, how to use / load the variables and using it in the template files.

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  • Reading Active Directory group users in SharePoint

    - by Faiz
    Hi, Say that i have an active directory group called "Group1". I add this Group1 to a SharePoint site ( People and Group New User). All the users that are part of Group1 can now access sharepoint site. Now,for a specific custom webpart, i need to target to only users who belong to Group1. But when a user who belongs to Group1 logs into the sharepoint site, i am not finding a way to determine from within SharePoint context if this user belongs to Group1. Any thoughts? Thanks, Faiz

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  • Architecture choice about representation of collections in Business Objects

    - by Rajarshi
    I have made certain choices in my architecture which I request the community to review and comment. I am breaking up the post in smaller sections to make it easier to understand the context and then suggest/comment. I am sorry that the post is long, but is required to explain the context. What am I building A typical business application where there are application users, security roles, business operation/action rights based on roles and several business modules like Stock Receive, Stock Transfer, Sale Order, Sale Invoice, Sale Return, Stock Audit etc. and several reports. The application is a WinForm application since it has a lot of rich and responsive UI requirements and has to operate in disconnected mode (with a local SQL Server), most of the time. What have I done I have built a framework - nothing to boast about, but just a set of libraries that serves the repetative requirements of my application, e.g. authentication, role based authorization, data access, validation, exception handling, logging, change status tracking, presentation model compliance and reasonable loose coupling between components. No, I have not written everything from scratch, you can say I have consolidated many things together like some concepts from CSLA, Martin Fowler for Presentation Model, blocks from Enterprise Library, Unity etc. to build a set of libraries that will help my developers be productive quickly without having to look up Google for many of the technical requirements. I have tried to keep the framework generic so that it can be used in typical business applications and also tried to follow some best practices that will support the same Business Objects to be used in an ASP.NET MVC environment also. My present architecture serves my objectives well, and have built several modules (on WinForm) without much trouble. The architecture also lent itself well to build some usable prototype on ASP.NET MVC with the same set of business objects, without changing a single line of code. My Dilemma I have used Custom Business Objects since that gives me a clearer OOP representation of the problem scope in my solution scope, and helps me visualize my entire solution as collection of objects with data and behavior rather than having a set of relational data (DataSet) and implement behaviours (business logic, validation) etc. separately. With rich databinding support in .NET 2.0 binding Custom Business Objects to UI was a breeze. Now while building my business objects, I am still in a dilemma about representation of collections in business objects. Currently I am using DataSets to represent collections while I have seen many suggestions to implement custom collections. For example, in my vision, a typical Sale Invoice Object will contain 'Sales Invoice Items' as a collection. Now theoritically, I can accept that the each 'Sales Invoice Item' should have its own behavior along with their data (ItemCode, Name, Qty, Price etc.) but typically managing of Sale Invoice Items in a Sale Invoice is handled by the Sale Invoice Object itself, e.g. adding/removing Items from collection. Additionally, we can also put business logic/rules for the Sales Invoice Items like "Qty should not be greater than the ordered qty", "Price should be max 10% above the price in Sale Order" etc. in the Sale Invoice object itself. With that kind of a vision, I felt that most business object child collections can be managed by the parent itself, including add/remove from collection as well and implementing business logic for the collection items, hence the collection items hold nothing but data. Additionally, typical collections are represented in UI in Grids, where ability to support DataBinding becomes very important for any collection. Implementing a custom collection, in that case would also mean, I have to implement robust DataBinding support as well, for the collection, which is of course time consuming. Now, considering child collection behaviors are implemented in the parent and the need for DataBinding of child collections, I chose DataSet to represent any child collection in my business objects. In the above example of Sale Invoice I will have 'Invoice Number', 'Date', 'Customer' etc. as attributes of the 'Sale Invoice' but 'InvoiceItems' as a DataSet. Of course, when I say DataSet, it is not a vanilla dataset but an extended DataSet that supports business rule validation and the same role based security model of my framework to allow/deny any business operation to rows/columns of the DataSet, automatically. This approach has allowed easier collection management and databinding in my business objects and my developers are able to deliver modules rapidly. Questions Do you feel that the approach is reasonable? Do you see any shortcomings of this approach? I am recently thinking of using 'Typed DataSets' as child collections, for easier representation in code, that will allow me to write 'currentInvoice.InvoiceItems' (for the DataTable) and 'invoiceItem.ProductCode' or 'invoiceItem.Qty', instead of 'drow["ProductCode"].ToString()' or '(int)drow["Qty"]' etc. Does this choice have any demerits? Thank you if you have read so far and a salute if you still have the Energy to answer.

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  • What happens before applicationDidFinishLaunching is invoked?

    - by nefsu
    I'm doing performance testing on my iphone app and I'm noticing that sometimes a good 3-4 secs elapse at startup before I start seeing my NSLogs from applicationDidFinishLaunching. I've optimized what happens once the code enters applicationDidFinishLaunching but I'm not sure how to optimize what goes on before that. I'm using a Default.png splash screen so it basically just stalls on that screen before it enters applicationDidFinishLaunching and starts doing something. Just to give you guys some context, I have no nib files and I'm using core animation, if that makes any difference. I have about 10 different controllers and my total bundle size is just under 2MBs.

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  • Code to read & write in XML

    - by user2954088
    I am trying to write code to read and write the XML but I am facing some errors, Could please someone provide the sample code to read XML in grid and can update/insert data from grid which will be saved in following sample xml file. Sample XML file: I am facing the below exception: The assembly with display name '...XmlSerializers' failed to load in the 'LoadFrom' binding context of the AppDomain with ID 1. The cause of the failure was: System.IO.FileNotFoundException: Could not load file or assembly '.....XmlSerializers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.

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  • socket.setdefaulttimeout interacting with M2Crypto connection

    - by Becky
    Hello - I'm making a secure SSL connection to a server using python and M2Crypto. See code below. from M2Crypto import SSL, m2,x509 from M2Crypto.m2xmlrpclib import Server, SSL_Tranport ctx = SSL.Context() m2.ssl_ctx_use_pkey_privkey(ctx.ctx,myKey.pkey) m2.ssl_ctx_use_x509(ctx.ctx,myCert.x509) server = Server(serverUrl, SSL_Transport(ctx)) server.ping() The above works fine. If I try to change the default socket timeout by adding the following two lines at the beginning of the code, I get a protocol error. import socket socket.setdefaulttimeout(40) This is the error I receive: File "/usr/local/lib/python2.4/xmlrpclib.py", line 1096, in call return self._send(self._name, args) File "/usr/local/lib/python2.4/xmlrpclib.py", line 1383, in _request verbose=self._verbose File "/usr/local/lib/python2.4/site-packages/M2Crypto/m2xmlrpclib.py", line 68, in request headers xmlrpclib.ProtocolError: Why is the default socket timeout causing problems?

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  • How do I open android built in downloads app?

    - by user1502829
    So I'm downloading stuff and it gets put into the built in downloads app since thats how the download manager works. I just want to the user to click a button which opens the built in downloads app. Heres my try: btnDownloads.setOnClickListener(new Button.OnClickListener(){ public void onClick(View v) { PackageManager pakMan=MainActivity.context.getPackageManager(); Log.d("bebr", "Making pak"); if(pakMan!=null){ Intent downloadsIntent=new Intent(Intent.ACTION_MAIN).addCategory(Intent.CATEGORY_LAUNCHER).setComponent(new ComponentName("com.android.downloads","com.android.downlods.Downloads")); ResolveInfo resolved=pakMan.resolveActivity(downloadsIntent, PackageManager.MATCH_DEFAULT_ONLY); Log.d("bebr","Resolving"); if(resolved!=null){ Log.d("bebr", "Starting"); startActivity(downloadsIntent); } } } });

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  • In Haskell, will calling length on a Lazy ByteString force the entire string into memory?

    - by me2
    I am reading a large data stream using lazy bytestrings, and want to know if at least X more bytes is available while parsing it. That is, I want to know if the bytestring is at least X bytes long. Will calling length on it result in the entire stream getting loaded, hence defeating the purpose of using the lazy bytestring? If yes, then the followup would be: How to tell if it has at least X bytes without loading the entire stream? EDIT: Originally I asked in the context of reading files but understand that there are better ways to determine filesize. Te ultimate solution I need however should not depend on the lazy bytestring source.

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  • Creating new tags in StackOverflow [closed]

    - by Biranchi
    Hi, Earlier users with more than 300 reputations or so (don't remeber exactly) had the ability to create new tags which is tagged to their Questions , so that it was easier to search for similar questions with the tags. And also the tags helped to identify the context of the Questions asked for. I had also created few new tags for the questions that i ask for. But now it seems the Stackover team without prior notice to the users or any intimation has revoked the permission for creating new tags and also has set the reputation to more that 1500 for creating new tags. Isn't this a bully act or did they feel its useless/unnecessary not required to inform all the registered users before making the changes ? thoughts....

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  • Xcode 3.2 + LLVM = no local symbols when debugging

    - by glebd
    I have a project for Mac OS X 10.5 that I'm building on 10.6 using Xcode 3.2. When I use GCC 4.2 for Debug build and hit a breakpoint, Xcode debugger displays local variable information normally. If I choose LLVM GCC 4.2 or Clang LLVM, when I hit breakpoint, local symbols are not available, and GDB says No symbol 'self' in current context if I try to print self or any other local symbol. In all cases Generate debug info option is set. The Debug configuration is set to $(NATIVE_ARCH) and 10.5 SDK, Build active architecture only option is set. When GDB starts, I can see it is being configured as x86_64-apple-darwin. I must be missing something obvious. How do I make GDB show local symbols when using a LLVM compiler?

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