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  • Linq - How to query specific columns and return a lists

    - by Billy Logan
    Hello Everyone, I am trying to write a linq query that will only return certain columns from my entity object into a list object. Below is my code which produces an error(can't implicitly convert a generic list of anonymous types to a generic list of type TBLPROMOTION): List<TBLPROMOTION> promotionInfo = null; promotionInfo = (from p in matches orderby p.PROMOTION_NM descending select new { p.EFFECTIVE_DT, p.EXPIRE_DT, p.IS_ACTIVE, p.PROMOTION_DESC, p.PROMOTION_ID, p.PROMOTION_NM }).ToList(); What would be the best way to accomplish this. I do not want to do a "select p" in this case and return all the columns associated with the query. thanks in advance, Billy

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  • Implementing IComparable<NotSelf>

    - by Luc Touraille
    This might be a trivial question, but I didn't find any information about this: is it "harmful" or considered bad practice to make a type T implement IComparable<S> (T and S being two different types)? Example: class Foo : IComparable<int> { public int CompareTo(int other) { if (other < i) return -1; if (other > i) return 1; return 0; } private int i; } Should this kind of code be avoided, and if yes, why?

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  • Benchmark for a .NET WinPcap wrapper

    - by brickner
    I'm developing a .NET wrapper for WinPcap called Pcap.Net. I'm trying to make sure this wrapper has high performance and I want to compare it to WinPcap and to other .net wrappers for WinPcap. The features I want to profile are: WinPcap native features (sending packets in different ways, receiving packets in different ways...) Interpreting packets that Pcap.Net knows how to interpret (like Etherent, IPv4, UDP, TCP, ICMP, ...) Building packet that Pcap.Net knows how to build (the same types it knows how to interpret). I also want to be able to profile the benchmark using Visual Studio 2010 Ultimate profiling tools. My question is: What should my benchmark exactly do to cover these issues and how would you suggest to build it?

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  • Best practices for fixed-width processing in .NET

    - by jmgant
    I'm working a .NET web service that will be processing a text file with a relatively long, multilevel record format. Each record in the file represents a different entity; the record contains multiple sub-types. (The same record format is currently being processed by a COBOL job, if that gives you a better picture of what we're looking at). I've created a class structure (a DATA DIVISION if you will) to hold the input data. My question is, what best practices have you found for processing large, complex fixed-width files in .NET? My general approach will be to read the entire line into a string and then parse the data from the string into the classes I've created. But I'm not sure whether I'll get better results working with the characters in the string as an array, or with the string itself. I guess that's the specific question, string vs. char[], but I would appreciate any other pointers anyone has. Thanks.

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  • UI Automation / Retrieve File Extension / C#

    - by AP
    Dear all, I am tasked with a project that requires me to retreieve a specific file from a folder where I can only get an X and Y on the screen. While in XP I managed to use the fact that windows explorer is in essence a list view, and used the WM_HITTEST message to obtain information about the file, in Windows 7, this is not the case. To solve this problem, I am using UI Automation, which is a great tool for such things, only problem is that in the case, the windows handle I am looking at belongs to the desktop, and the desktop might have several files with the same name but with different extensions (and windows is configured to "hide extensions of known file types") UI automation does not return the extension back to me. I have tried many things, but I cannot find any robust solution which would give me 100% success. Has anyone tried this? successfully? Would appreciate any pointers. Many thanks,

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  • Animation on the iPhone - use image sequence or rotation?

    - by user157733
    I am creating a basic animation for my iPhone app. I have a choice to make between 2 different types of animation. I can use this... NSArray *myImages = [NSArray arrayWithObjects: [UIImage imageNamed:@"myImage1.png"], [UIImage imageNamed:@"myImage2.png"], [UIImage imageNamed:@"myImage3.png"], [UIImage imageNamed:@"myImage4.gif"], nil]; UIImageView *myAnimatedView = [UIImageView alloc]; [myAnimatedView initWithFrame:[self bounds]]; myAnimatedView.animationImages = myImages; myAnimatedView.animationDuration = 0.25; [self addSubview:myAnimatedView]; [myAnimatedView release]; or something like this... [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:1.5]; // other animations goes here myImage.transform = CGAffineTransformMakeRotation(M_PI*0.5); // other animations goes here [UIView commitAnimations]; I have quite a few of these parts to animate so I want to choose an option which uses the least amount of memory and runds the quickest. Any advice would be great, thanks

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  • InvalidCastException when creating an instance using assembly.CreateInstance

    - by Yossi Dahan
    I'm looking for an explanation for the following - I have an assembly I'm loading using Assembly assembly = Assembly.LoadFrom(filename); I then loop on all the types in the assembly, and wish to try and find out if a type implements a particular interface and if so I want an instance of that type, I've tried several things which did not work, but when I fell back to the most basic (and probably inefficient) way, I realised there's something more fundamental I don't understand - foreach (Type t in assembly.GetTypes()) { foreach (Type i in t.GetInterfaces()) { if (i.FullName == pluginInterfaceType.FullName) { object o = assembly.CreateInstance(t.ToString()); IInterface plugin = (IInterface)o; That last line causes an InvalidCastException, despite the fact that the type created definitely implements that interface. Further more - if I use Activator.CreateInstance instead of Assembly.CreateInstance (which I don't want to do), casting to the interface works just fine.

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  • Does there exist a jQuery plugin or JavaScript library that allows Venn Diagram presentation?

    - by knowncitizen
    I'm writing a jQuery application to allow analysis of data with the help of visual cues. My data is retrieved via XMLHttpRequest in the form of JSON. The visual cues include histograms, spark lines, and various other graph types. The idea is that the user is able to narrow their data via these various visual views. My question is thus - aside from the Google Charts API, does there exist a JavaScript way of presenting a Venn Diagram? Requirement: no Flash. Canvas is acceptable.

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  • java casting a list

    - by dcp
    Let's say I had: protected void performLogic(List<Object> docs) { ... } In the code where I'm going to be calling this method, I have a List<String> list. I want to call performLogic, passing this list. But it won't work because the lists are 2 different types: public void execute() { List<String> docs = new ArrayList<String>(); performLogin(docs); // won't work } I tried casting to List<Object> also, but that won't work either. So is the only way to do this is to make a new ArrayList of Object and just add the values and then pass it? Just seems cumbersome. I wondered if there was a better way to do it. Thanks.

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  • Trying to integrate Jeditable+MarkItUp and Thickbox/Lightbox

    - by Bob Sawyer
    I've managed to successfully integrate MarkItUp with Jeditable based on the instructions on those two sites. What I would really like to do, however, is to have the Jeditable/MarkItUp editing window appear in a Thickbox or Lightbox overlay. So far my attempts to do this have not been successful. So, at the moment, I have the standard code: $.editable.addInputType('markitup', { element : $.editable.types.textarea.element, plugin : function(settings, original) { $('textarea', this).markItUp(settings.markitup); } }); $(".editme").editable("/content/save", { event : 'dblclick', type : 'markitup', submit : 'OK', cancel : 'Cancel', width : 640, height : 'auto', tooltip : 'Double-click to edit...', onblur : 'ignore', markitup : mySettings }); I've found other posts here that show how to trigger the edit box by clicking on a link rather than the object itself, and I've tried integrating that with the Thickbox calls, to no avail. Would appreciate anyone pointing me in the right direction. Thanks!

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  • ASP.NET MVC <OutputCache> SqlDependency (CommandNotification?) with LINQ queries

    - by sinni800
    Hello, I use LINQ queries in my ASP.NET MVC application and want to use OutputCache in some of my Actions. I hear this should be possible with CommandNotifications. But those seem to only go for self-created SQLCommands, or am I wrong? Can I manually tell SQL server to send SQLDependency notifications if certain tables change? And if yes, how can I attach them to the OutputCache? Another side question: Can you do this with strongly types views too? Thank you in advance...

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  • Java getMethod with superclass parameters in method

    - by Jonathon
    Given: class A { public void m(List l) { ... } } Let's say I want to invoke method m with reflection, passing an ArrayList as the parameter to m: List myList = new ArrayList(); A a = new A(); Method method = A.class.getMethod("m", new Class[] { myList.getClass() }); method.invoke(a, Object[] { myList }); The getMethod on line 3 will throw NoSuchMethodException because the runtime type of myList is ArrayList, not List. Is there a good generic way around this that doesn't require knowledge of class A's parameter types?

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  • Probability Homework Help

    - by Alon
    A child is tasting two types of chocolate. The probability that he will like the first type if he liked the second type is 5/6. The probability that he will like the second type if he liked the first type is 3/8. It is known that the probability that the child won't like the second type of chocolate is doubled than the probability that he won't like the first type. What is the probability that the child like at least one of the two type of chocolates? So I tried: 1-[P(not like the first type AND not like the second type)] which is like: 1-[P(not like the first type)*P(not like first type / not like the second type) + P(not like the second type) which equals: P(not like first type / not like second type) But now, I don't have the data of the conditional probability. In addition, I'd like to see how could it solved using a computer programming language. Any ideas? Thank you.

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  • Manual testing Vs Automated testing

    - by mgj
    Respected all, As many know testing can be mainly classified into manual and automated testing. With regard to this certain questions come to mind. Hope you can help... They include: What is the basic difference between the two types of testing? What are the elements of challenges involved in both manual and automated testing? What are the different skill sets required by a software tester for manual and automated testing respectively? What are the different job prospects and growth opportunities among software testers who do manual testing automated testing respectively? Is manual testing under rated to automated testing in anyway(s)? If yes, kindly specify the way. How differently are the manual testers treated in comparison to automated testers in the corporate world?( If they truly are differentiated in any terms as such ) I hope you can share your knowledge in answering these questions.. Thank you for your time..:)

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  • Using CSS Classes for indivdual effects - opinions?

    - by Cool Hand Luke UK
    Hey, Just trying to canvas some opinions here. I was wondering how people go about adding individual effects to html elements. Take this example: you have three types of h1 titles all the same size but some are black some are gold and some are white. Some have a text-shadow etc. Would you create separate CSS classes and add them do the h1 tag or would you create a new single class for each different h1 title type (with grouped CSS elements)? With singular class for each effect you can build up combos of classes in html class="gold shadow" but also how would you name them. For example its bad practice to give classes and id names associated to colours, because it doesn't define what it does well. However is this ok with textual CSS classes? Just wondering what others do, I know there are no hard and fast rules. Cheers.

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  • Parsing plain Win32 PE File (Exe/DLL) in C#.NET

    - by Usman
    Hello, I need to parse plain Win32 DLL/Exe and need to get all imports and exports from it and to show it on console or GUI(say Win Forms). Is it possible to parse Win32 DLL/Exe in C#.NET, read its export table,import table and get managed types from it. As its unmanaged PE(.NET doesn't allows you to convert unmanaged PE files to managed .NET assemblies, only it generates COM managed assemblies). So how to parse export and import tables of PE files and take all methods(signatures from it) in managed form.(e.g if char* as argument, it should display as IntPtr) Regards Usman

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  • classic asp - response.redirect and response.write problem

    - by apg1985
    Hi People, The problem if someone types into the search box a location it goes through to that location page but if they type in a location thats not found or they dont type anything in I need it to redirect back to the homepage (index.asp) and display "whoops we couldnt find that" in the search box (input field) This is the vb Case Else response.redirect "index.asp?whoops=whoops we couldnt find that" End Select Then in the value of the input field I have value="<% =whoops %>" This doesnt work by the way, first is this the best way of doing it because id rather not have the error message in the url. This there away of posting the error as a variable and then calling it into the input field like, <% =whoops %>

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  • C# settings using ApplicationSettingsBase - roaming and common

    - by Mark Pim
    I'm using the Windows Forms Application settings architecture (or however you're supposed to refer to it) and am successfully saving user settings to AppData. What I want to do is have some settings common to all users of a particular machine and some settings which roam with users across machines. For example I have some settings relating to a peripheral attached to the computer (model, settings etc.) and some user preferences like user interface colours. The colours preferences should roam with the user, but the peripheral settings should stay on the local computer no matter who's logged on. How can I mark these types of settings so that some get stored in /AppData/... and some in /AppData? Note that I don't want Application level settings - each computer the app will be installed on will have different settings. I'm targetting .Net 3.0 if that makes a difference.

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  • ASP.NET 2.0: Specifying an instance of an object for an ObjectDataSource

    - by Austin Salonen
    I'm using an ObjectDataSource to bind data to a GridView; it works fine except that it always creates a new object to use as a data source. I can do all the setup just fine but I cannot use an instance of an existing object to specify as the "data source" for it. Is it possible to do this? If so, how? If it's not possible, why? EDIT: Here's the gist of what's going on (object types changed): On the first page you are editting the attributes for a dog. One of the attributes is "has puppies" and if it's true, the next page you specify the names of those puppies. What's happening in my case is that those puppies are not getting linked to the original dog but to a "new" dog. (The implication that my problem is a "female dog" was coincidental. ;-) )

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  • Synchronising tables across remote Access databases

    - by Paul H
    Hi folks, I'm helping out a business by providing an Access DB to manage requests of various types. As they are a construction company, they have one machine in an 'office' on the building site, plus 3 based in their main office. The machine on site has no internet connectivity. Is there any (reasonably simple) way to synchronise these databases every so often? I realise the tables could be merged, but each has an autoincrement field which must be synced between instances (i.e. when merging two tables the autoincrement should be reassigned based on the combination of records). Cheers in advance, Paul

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  • How to CompareTo two Object without known about their real type

    - by Kamil
    I have to implement a one linked list but it should put object in appropriate position. Everything was OK when I use it in conjunction with specific class, but when I tried make it universal and argument of method insert was Object some problem appeared. When I want to input Object in right position I should use CompareTo method, but there isn't method in Object class! The problem is how to compare two object elements without known about their real types. Maybe I should use generic class type? But what about CompareTo? Or maybe combine with Element class and place CompareTo there? I suppose it is feasible. :) public void insert(Object o) { Element el = new Element(o); // initializing and setting iterators while(!it.isDone() && ((it.current().getValue())).CompareTo(o)<0) // it.current() returns Element of List { //move interators } //... }

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  • Convert From Custom List to List of String

    - by Paul Johnson
    Hi all I have the following code: Public Shared Function ConvertToString(ByVal list As IList) As String Dim strBuilder = New System.Text.StringBuilder() Dim item As Object For Each item In list strBuilder.Append(obj.ToString()) strBuilder.Append(",") Next Return strBuilder.ToString(strBuilder.Length - 1) End Function The intention is to convert an IList of custom objects to a string equivalent comprising each element in the Ilist. Unfortunately I can't seem to find a way to get the underlying data of the custom object, and of course as in the above example, using object simply gives me a string of types definitions, rather than access to the underlying data. Any assistance much appreciated. Paul.

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  • Anyone know how to use TValue.AsType<TNotifyEvent> properly?

    - by Mason Wheeler
    I'm trying to use RTTI to add an event handler to a control, that may already have an event handler set. The code looks something like this: var prop: TRttiProperty; val: TValue; begin prop := FContext.GetType(MyControl.ClassInfo).GetProperty('OnChange'); val := prop.GetValue(MyControl); FOldOnChange := val.AsType<TNotifyEvent>; prop.SetValue(MyControl, TValue.From<TNotifyEvent>(self.MyOnChange)); end; I want this so I can do this in MyOnChange: begin if assigned(FOldOnChange) then FOldOnChange(Sender); //additional code here end; Unfortunately, the compiler doesn't seem to like the line FOldOnChange := val.AsType<TNotifyEvent>;. It says E2010 Incompatible types: 'procedure, untyped pointer or untyped parameter' and 'TNotifyEvent' Anyone know why that is or how to fix it? It looks right to me...

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  • Is there a J2SE sensor API?

    - by Martin Strandbygaard
    Does anyone know of a "standardized" Java API for working with sensors, and which is closely tied to J2ME as is the case with JSR 256? I'm writing a Java library for interfacing with a sensor network consisting of several different types of sensors (mostly simple stuff such as temperature, humidity, GPS, etc.). So far I've rolled my own interface, and users have to write apps against this. I would like to change this approach and implement a "standard" API so that implementations aren't that closely tied to my library. I've looked at JSR 256, but that really isn't a great solution as it's for J2ME, and my library is mostly used by Android devices or laptops running the full J2SE.

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  • Can you handle both json and html datatypes in the same ajax call?

    - by Prabhu
    Is there anyway I can handle both json and html return types when posting jquery ajax: For example, this ajax call expects html back $.ajax({ type: "POST", url: url data: data, dataType: "html", success: function (response) { var $html = "<li class='list-item'>" + response + "</li>"; $('#a').prepend($html); }, error: function (xhr, status, error) { alert(xhr.statusText); } }); but I wanted to modify it so that I can return a json object if there is a model error. so I can do something like this: success: function (response) { if (response.Error){ alert(response.Message); } else { var $html = "<li class='list-item'>" + response + "</li>"; $('#a').prepend($html); } Is this possible?

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