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  • Create Excel files from C# without office

    - by tbischel
    I am writing a program that generates excel reports, currently using the Microsoft.Interop.Excel reference. My dev computer has Excel on it, but the end user may or may not have Office installed. Will this tool fail if Office isn't installed on the end users computer, or is this interop service separate from the actual application?

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  • N2Cms, Adding a new property to a ContentPageBase class, corrupts the already entered data.

    - by Nour Sabouny
    i want to modify the ContentPageBase, in a functional site, i tried to add a property called for example (weight), but if there is an existing page in the database, the site will malfunction, and throws an Exception, of (Object reference not set to an instance of an object). how can i correct the already entered data ? public abstract class ContentPageBase : PageBase, ICommentable { [EditableTextBox("Weight", 10, ContainerName = Tabs.Details)] //newly added property. public virtual int Weight { get { return (int)GetDetail("Weight"); } set { SetDetail("Weight", value); } } }

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  • ASP.NET masterpage public variables error

    - by eugeneK
    I have public variable 'MessagePlaceholder' on MasterPage and a Class that accesses this property like that setting it's value to string from getMessage(); ((HttpContext.Current.Handler as System.Web.UI.Page).Master as MasterPage).MessagePlaceholder = getMessage(); which gives me an error like this one Error 3 'System.Web.UI.MasterPage' does not contain a definition for 'MessagePlaceholder' and no extension method 'MessagePlaceholder' accepting a first argument of type 'System.Web.UI.MasterPage' could be found (are you missing a using directive or an assembly reference?) What should i do ?

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  • cocoa -- What is the proper way to tell an NSWindow to redisplay its contents?

    - by William Jockusch
    According to the NSWindow Class Reference, you should "rarely need to invoke" the NSWindow methods "display" or "setViewsNeedDisplay". So what is the usual way to redisplay the window's contents? EDIT: I am having trouble dealing with resizing events. I just want to have everything scale proportionally. See this question. As no one seems to have any ideas for using masks to get it to happen, I want to redraw the whole thing.

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  • Python 3 with numpy and object refernces

    - by user963386
    I need to create a large matrix (array) structure (3 axis) and each element should store the reference to a Python object (myclass instance). Is it possible to use numpy to create such an array. Which data type should I use in order to store Python references? The advantage of numpy is the support of slicing at different levels. The alternativee is to create a nested (nested) list but it is a cumbersome solution.

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  • Java "this" and inner class

    - by llm
    Is it possible to get a reference to this from within a Java inner class? i.e. Class outer { void aMethod() { NewClass newClass = new NewClass() { void bMethod() { // How to I get access to "this" (pointing to outer) from here? } }; } }

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  • Using Action Filters for user login in Asp.NET MVC?

    - by ripper234
    I recently built a site using Asp.Net. The way I chose to implement user login is through a base 'UserAwareController' class, that all controllers extend. It contained a reference to the UserRepository, and exposed a protected GetCurrentUser() method that concrete controllers could query. The whole process felt a bit wishy-washy to me. Is Action Filters a good alternative? What are its benefits? Is there something else I might be missing?

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  • What's CFRunLoop?

    - by Boon
    I would like to understand run loop more in-depth than what the reference provides. Is there resources out there that discuss this in greater details?

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  • jQuery append and prepend divs and click events

    - by Murtaza
    i want to transfer the div's from one parent div to other on click of it. Please check the below jsfiddle page for the reference http://jsfiddle.net/fb7Tq/97/ i want to transfer the div on either side when i click on any div in grey it migrates to other div box and changes the style to red when i click back to red div it should come back to its original place in grey style. How can i achieve this?

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  • Multilevel asynchronous method call pattern in c#

    - by michajas
    Hi, I have design problem regarding async calls to method. I'd like to know best/good pattern to call async method, which calls another async method, which calls another async method :) In other words, I have WCF service reference created with async methods and I want to call them from another async method which is called by other async method. All this for non blocking GUI. Thanks!

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  • Creating SVG map from geometry stored in MySQL

    - by Barnabe
    I have a group of geometries stored in MySQl (as polygon and as well-known text) representing counties. I can build a table of geometries and color codes after querying some county data (say GDP per capita). What is the best way to export this as an SVG map? I cannot find any reference to SVG conversion in the MySQL documentation.

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  • Using UNC path as collections location in Mecurial IIS6 Server2003

    - by Chris M
    I'm running the latest Mercurial and Python 2.6; IIS6 is using the wildcard ISAPI method to attach the site to the Mecurial hgwebdir_wsgi [paths] \ = \\COMP3254\TestRepo\* [web] baseurl = / allow_push = * push_ssl = false style = monoblue The setup works perfectly if I reference the local drive E:\repo* but doesnt work if I specify the network as above; I've given the server (MERCDEV01$) full permissions on the shared folder on COMP3254, I can't think of any other reason it wouldn't work. Any ideas?

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  • popups in asp.net

    - by Surya sasidhar
    hi, i want to display the pop ups in asp.net page like how the stack over flow show the pop ups on the top of the site (you get the new answer for the question like that in a orange color) how can i write the code is there any free source code or any reference. thank you

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  • Using Android Test Framework

    - by Bharat Pawar
    Android provides various packages for testing like AndroidTestCase ApplicationTestCase InstrumentationTestCase ActivityInstrumentationTestCase2 ActivityTestCase I need to know how to decide which package is best suitable for testing my app. Some info is provided in this link http://developer.android.com/reference/android/test/package-summary.html But I need more clarity on this...

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  • java web application best practices

    - by Bruce
    Hi all I'm trying to figure out the optimum way to develop and release a fairly simple web application, and I'm running into several problems. I'll outline the decisions I've made, because somewhere I've clearly gone off the rails.. Hugely grateful for any help! I have what I think is a fairly simple web application. It contains a couple of jsps that reference a couple of java beans, and the usual static html, js, css and images. Decision 1) I wanted to have a clear and clean release procedure, such that I could develop on my local machine and then release reliably to a production machine. I therefore made the decision to package the application into a war file (including all the static resources), to minimize the separate bits and pieces I would need to release. So far so good? Decision 2) I wanted things on my local machine to be as similar as possible to the production environment. So in my html, for example, I may have a reference to a static file such as http://static.foo.com/file . To keep this code working seamlessly on dev and prod, I decided to put static.foo.com in my /etc/hosts when developing locally, so that all the urls work correctly without changing anything. Decision 3) I decided to use eclipse and maven to give me a best practice environment for administering and building my project. So I have a nice tight set up now, except that: Every time I want to change anything in development, like one line in an html file, I have to rebuild the entire project and then wait for tomcat to load the war before I can see if it's what I wanted. So my questions are: 1) Is there a way to connect up eclipse and tomcat so that I don't have to rebuild the war each time? ie tomcat is looking straight at my actual workspace to serve up the static files? 2)I think I'm maybe making things harder by using /etc/hosts to reflect production urls - is there a better way that doesn't involve manually changing over urls (relative urls are fine of course, but where you have many subdomains, say one for static files and one for dynamic, you have to write out the full path, surely?) 3) Is this really best practice?? How do people set things up so that they balance the requirement for an automated, all-encompassing build process on the one hand, and the speed and flexibility to be able to develop javascript and html and css quickly, as quickly as if one just pointed apache at the directory and developed live? What do people find works? Many thanks!

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  • iPhone memory management

    - by Prazi
    I am newbie to iPhone programming. I am not using Interface Builder in my programming. I have some doubt about memory management, @property topics in iPhone. Consider the following code @interface LoadFlag : UIViewController { UIImage *flag; UIImageView *preview; } @property (nonatomic, retain) UIImageView *preview; @property (nonatomic, retain) UIImage *flag; @implementation @synthesize preview; @synthesize flag; - (void)viewDidLoad { flag = [UIImage imageNamed:@"myImage.png"]]; NSLog(@"Preview: %d\n",[preview retainCount]); //Count: 0 but shouldn't it be 1 as I am retaining it in @property in interface file preview=[[UIImageView alloc]init]; NSLog(@"Count: %d\n",[preview retainCount]); //Count: 1 preview.frame=CGRectMake(0.0f, 0.0f, 100.0f, 100.0f); preview.image = flag; [self.view addSubview:preview]; NSLog(@"Count: %d\n",[preview retainCount]); //Count: 2 [preview release]; NSLog(@"Count: %d\n",[preview retainCount]); //Count: 1 } When & Why(what is the need) do I have to set @property with retain (in above case for UIImage & UIImageView) ? I saw this statement in many sample programs but didn't understood the need of it. When I declare @property (nonatomic, retain) UIImageView *preview; statement the retain Count is 0. Why doesn't it increase by 1 inspite of retaining it in @property. Also when I declare [self.view addSubview:preview]; then retain Count increments by 1 again. In this case does the "Autorelease pool" releases for us later or we have to take care of releasing it. I am not sure but I think that the Autorelease should handle it as we didn't explicitly retained it so why should we worry of releasing it. Now, after the [preview release]; statement my count is 1. Now I don't need UIImageView anymore in my program so when and where should I release it so that the count becomes 0 and the memory gets deallocated. Again, I am not sure but I think that the Autorelease should handle it as we didn't explicitly retained it so why should we worry of releasing it. What will happen if I release it in -(void) dealloc method In the statement - flag = [UIImage imageNamed:@"myImage.png"]]; I haven't allocated any memory to flag but how can I still use it in my program. In this case if I do not allocate memory then who allocates & deallocates memory to it or is the "flag" just a reference pointing to - [UIImage imageNamed:@"myImage.png"]];. If it is a reference only then do i need to release it. Thanks in advance.

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  • How do I get the CPU speed and total physical ram in C#?

    - by edude05
    I need a simple way of checking how much ram and fast the CPU of the host PC is. I tried WMI however the code I'm using private long getCPU() { ManagementClass mObject = new ManagementClass("Win32_Processor"); mObject.Get(); return (long)mObject.Properties["MaxClockSpeed"].Value; } Throws a null reference exception. Furthermore, WMI queries are a bit slow and I need to make a few to get all the specs. Is there a better way?

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  • Peek ahead when iterating an array in PHP 5.2

    - by pako
    Is it possible to "peek ahead" while iterating an array in PHP 5.2? For example, I often use foreach to manipulate data from an array: foreach($array as $object) { // do something } But I often need to peek at the next element while going through the array. I know I could use a for loop and reference the next item by it's index ($array[$i+1]), but it wouldn't work for associative arrays. Is there any elegant solution for my problem, perhaps involving SPL?

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  • winsock component

    - by Oghenero
    i have a winsock component made with vb.net in a class library that has events. how do i make it appear in tool box if i reference the dll in another project.? How do i use it in my c# program? thanks

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