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• ASP.NET Excel Export formatting question

  - by BWC

  Hey Guys, I've been banging my head on the wall over this issue for a couple days now and I need some help. I'm creating an excel file using ASP.net and everything is going just fine except one column has to be formatted as a decimal to 2 places but when it pulls into excel, excel automatically formats it as a whole number instead of keeping the decimal places. sw.Write(String.Format("{0:f}", CDbl(dr(14)).ToString("0.00"))) this produces "20.00" but when I open it in excel it's displayed as 20...if I select the whole column and format it as a number it gets displayed as 20.00 like it's supposed to but I don't want to have to do this (I can't do that) the file is supposed to be automatically picked up and imported into another system that needs the column to be a decimal. Any suggestions would be greatly appreciated.

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• How to display image that is located on another server on the network (ASP.NET)

  - by eviljack

  I've got a ASP.NET site that's located on a local server (MY_SERVER). And one of the things it does is pull up tiff files which are located on another server (ANOTHER_SERVER). The location of each of these files is stored in SQL. I pull up each of these images and am supposed to display them. The problem is: the files are not named with a tiff extension (does it matter?) they aren't displaying at all. I am using an Image control to display these images, and I'm not sure if it matters that the extension is not set (does the image control know the difference between an jpg and a tiff without the extension?) I am guessing the images aren't displaying because they are not on the same server MY_SERVER that the images are located (ANOTHER_SERVER). Any ideas on how to fix this?

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• Is this part of MVC in .NET?

  - by 4thSpace

  I have a .NET MVC winform app. I've created an AppDelegate class that handles application startup and shutdown...for now (it might do more later). Winform apps have a Program.cs file that does some app initialization, starts the message pump and creates the first form. In my app, the first form is AppDelegate, which isn't really a form but is forced that way by Application.Run(). AppDelegate does any further app initialization and starts the first Controller, which then initializes any child controllers (these then create their views). I don't consider events occuring in Program.cs and AppDelegate as part of the MVC. Conceptually, what would these be called?

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• C# .net framework- border on only one side of the form

  - by user161179

  I am an inexperienced programmer , completely new to programming for windows . I am writing a little program that I always wanted . Its being written using C# using .net framework. atleast thats what I think I am doing. All the talk about framework and .nets , windows forms , and win32 api has all got me really confused.. :( anyways I have simple Form object. Form f = new Form() ; f.Text = "" ; f.ControlBox =false ; Now How to remove the all the borders on the form except one sides? As in, the side borders should go , but the top border should stay FormBorderStyle doesn't have anything for this Also how do you people solve such problems yourself , without asking ? look at others code ? read a a book ? any particular website ? I have googled , but it didn't turn up nothing.

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• .NET SettingsProvider/ApplicationSettingsBase caching

  - by Andy White

  I'm looking at some code that uses the .NET System.Configuration.SettingsProvider and ApplicationSettingsBase to handle configuration. We have a class that derives from SettingsProvider that uses a database as the data store, and then we have other settings classes that inherit from ApplicationSettingsBase, and have the [SettingsProvider(typeof(MySettingsProvider))] attribute. The problem is that we're using these settings classes in multiple applications, but they seem to permanently cache the configuration values, the first time they are loaded. The issue is that if a setting is changed in one application, the other applications will not get the setting until the next restart, because they are cached everywhere. My question is: is there a way to force the SettingsProvider implementation, or the classes derived from ApplicationSettingsBase to not cache values, and re-query the datastore every time the setting is accessed? A valid answer might be that these classes were not intended to be used in multi-application environments...

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• ASP.NET Call Another Element's DoPostBack Function

  - by blu

  I have an ASP.NET control that has an onclick event handler rendered inline on the element. I would like to call that function and have it raise the target control's server side event handler. <asp:CheckBox ID="Foo" runat="server" AutoPostBack="true" Text="Foo" /> <a href="#" onclick="javascript:setTimeout('__doPostBack(\'Foo\',\'\')', 0)">Test </a> I created the checkbox, looked at the rendered function on the field, and then copied that into the onclick on the anchor element. The anchor will raise a postback, but the event handler for the check box is not raised. protected override void OnLoad(EventArgs e) { // fires for checkbox // fires for anchor (the anchor does cause a postback) } void Foo_CheckedChanged(object sender, EventArgs e) { // fires for checkbox // does not fire for anchor } protected override void OnInit(EventArgs e) { this.Foo.CheckedChanged += new EventHandler(Foo_CheckedChanged); } Is it possible to do this?

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• ASP.NET: How to initialize when *user control* is initially loaded

  - by kendor

  I have an ASP.NET user control that I'm embedding in another user control. This works fine. I need to know the best logic/method for detecting when the control is loaded. In other words, I have some display initialization logic that needs to run when the control is initially displayed. Surely there is a pattern for this. The typical method is to put (!IsPostBack) logic in the Page_Load method of the control. This works great until you end up with a state when the Parent page has already posted back many times. My user control gets added to the page but its display does not intialize properly. I'm hoping to find a way that keeps this logic inside the control, versus various hacking around in the codebehind of the parent page.

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• Double encoded url being fully decoded in ASP.NET

  - by Brad R

  I have just come across something that is quite strange and yet I haven't found any mention on the interwebs of others having the same problem. If I hit my ASP.NET application with a double encoded url then the Request["myQueryParam"] will do a double decode of the query for me. This is not desirable as I have double encoded my query string for a good reason. Can others confirm I'm not doing something obviously wrong, and why this would happen. A solution to prevent it, without doing some nasty query string parsing, would be great too! As an example if you hit the url: http://localhost/MyApp?originalUrl=http%3a%2f%2flocalhost%2fAction%2fRedirect%3fUrl%3d%252fsomeUrl%253futm_medium%253dabc%2526utm_source%253dabc%2526utm_campaign%253dabc (For reference %25 is the % symbol) Then look at the Request["originalUrl"] (page or controller) the string returned is: http://localhost/Action/Redirect?Url=/someUrl?utm_medium=abc&utm_source=abc&utm_campaign=abc I would expect: http://localhost/Action/Redirect?Url=%2fsomeUrl%3futm_medium%3dabc%26utm_source%3dabc%26utm_campaign%3dabc I have also checked in Fiddler and the URL is being passed to the server correctly (one possible culprit could have been the browser decoding the URL before sending).

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• Best ASP.NET reporting engine with custom reports creation ability

  - by Alex Konduforov

  We need to choose the reporting engine for our ASP.NET application. The main functional requirement is an ability for end users (not programmers, just normal users) to create custom reports. We will be using SQL Server as a database so I am aware of some options: SQL Server Reporting services, Crystal Reports, Active Reports, even WindwardReports. But frankly speaking I've never used any of those except Reporting services and it's quite difficult to choose which one suits the best to customer needs of custom reports creation. Is it possible to get some pros and cons for these options or at least your advice on what would be better to use in this case. Thanks a lot.

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• How to catch HttpAntiForgeryException in ASP.NET MVC

  - by megalonychidae

  I'm using the AntiForgeryToken in my ASP.NET MVC forms. If I deactivate cookies in my browser and send the from, I'd get following error message: A required anti-forgery token was not supplied or was invalid. How can I prevent this message from showing? I would prefer redirecting the user to another page. I've activated customErrors and included this HandleError in my controller: [HandleError(ExceptionType=typeof(HttpAntiForgeryException), View="Index")] public class MyController : Controller { ... } The HandleError is ignored. Has anyone got a solution?

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• Extending configuration for .Net 3.5 Applications

  - by Maximiliano Rios

  Due to a requirement in my current project, I have to build a configuration manager to handle configurations that merge local config info with database one. Custom configuration doesn't fit my needs, problem is that I don't know what's the type before loading certain information, for example: Loading database information I will able to know what's myhandler's type. Not previously. So I thought to write my own handler but I can't let set blank as type for sections, in fact .net requires to know what's the type to match myhandler nodes. I'm thinking on building a different parser to read XML nodes but I would prefer to match this structure. I've not found any information to do that yet, is there any way? Can I extend or hook up something into the framework to be capable of loading on-the-fly types and validate nodes? Thanks in advance.

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• Image gallery control for ASP.Net with filtering capabilities

  - by ks78

  I'm writing an ASP.Net application which needs to display a large number of thumbnails, preferably in a paginated format. These thumbnails will be stored on the server's hard disk, but will have their filenames listed in a SQL Server database. What I want to do is to be able to filter the images being displayed based on criteria within the database. I've looked at the NotesForGallery control, which I really like, but it doesn't seem to have a way to do that. --if I'm wrong, please correct me. Are there any other image gallery type controls, preferably free, that can do what I need? I'm hoping someone can recommend a control or solution that will point me in the right direction. Thanks in advance.

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• Strange thing about .NET 4.0 filesystem enumeration functionality

  - by codymanix

  I just read a page of "Whats new .NET Framework 4.0". I have trouble understanding the last paragraph: To remove open handles on enumerated directories or files Create a custom method (or function in Visual Basic) to contain your enumeration code. Apply the MethodImplAttribute attribute with the NoInlining option to the new method. For example: [MethodImplAttribute(MethodImplOptions.NoInlining)] Private void Enumerate() Include the following method calls, to run after your enumeration code: * The GC.Collect() method (no parameters). * The GC.WaitForPendingFinalizers() method. Why the attribute NoInlining? What harm would inlining do here? Why call the garbage collector manually, why not making the enumerator implement IDisposable in the first place? I suspect they use FindFirstFile()/FindNextFile() API calls for the imlementation, so FindClose() has to be called in any case if the enumeration is done.

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• .net converting bytearray to double[]

  - by AJ

  Hello, I am working with a database from a legacy app which stores 24 floating point values (doubles) as a byte array of length 192, so 8 bytes per value. This byte array is stored in a column of type image in a SQL Server 2005 database. In my .net app I need to read this byte array and convert it to a array of type Double[24]. I can access the field easy enough reader.GetBytes(...) but how to convert the returned ByteArray to Double[24] Any ideas? Thanks, AJ

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• .NET Single Line Logging (ala Trace.Write/WriteLine) using Instrumentation.Logging

  - by KnownColor

  Hello Everyone, My question is whether it is possible to get line/multiline (very unsure of correct term for this) behaviour of the Trace.Write and Trace.WriteLine methods but using the Microsoft Instrumentation Logging framework in .NET 2.0. Desired Output Hello World! Oh Hai. What I Currently Have Trace.Write("Hello "); Trace.WriteLine("World!"); Trace.Write("Oh Hai."); I would prefer to use instrumentation to log rather than writing to a log file using Debug.Trace. EDIT: By Instrumentation Logging I mean using a 'loggingConfiguration' block in my App.config and writing Log Entries using using Microsoft.Practices.EnterpriseLibrary.Logging.Logger.Write(LogEntry logEntry); Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.FlatFileTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=2.0.0.0 for example. Ta, KnownColor

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• asp.net mvc userinteractive problem

  - by niao

  Greetings, in my mvc application when I try to connect to wcf service I get this error It is invalid to show a modal dialog or form when the application is not running in UserInteractive mode. Specify the ServiceNotification or DefaultDesktopOnly style to display a notification from a service application. The problem only occurs on production server (Win2008, IIS7). On my development server (WinXp, IIS6) it works ok. Additionally. I can connect from asp.net mvc development to wcf production service. I can't do this od production server (asp mvc production to production wcf service)

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• How use asp.net get video duration

  - by mhmt

  using Microsoft.DirectX.AudioVideoPlayback; Video vvideo = new Video(FileUpload.FileName.ToString()); StringBuilder sb = new StringBuilder(); sb.Append(duration.toString()); error message; “Installed an access attempt was made to the application domain.” “vvideo” instance is created error msj :// But down found cods I found a working code in c #. but asp.net does not work string file1 = "c://ds.mpeg" IMediaPosition m_objMediaPosition = null; FilgraphManager m_objFilterGraph = new FilgraphManager(); m_objFilterGraph.RenderFile(filename); m_objMediaPosition = m_objFilterGraph as IMediaPosition; int s = (int)m_objMediaPosition.Duration; int h = s / 3600; int m = (s - (h * 3600)) / 60; s = s - (h * 3600 + m * 60); I DON'T TAKE VIDEO DURATION BOYS :/

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• .NET Data Adapter Timeout SP Issue

  - by A-B

  We have a SQL Server stored procedure that runs fine in SQL Manager directly, does a rather large calculation but only takes 50-10 seconds max to run. However when we call this from the .NET app via a data adapter it times out. The timeout however happens before the timeout period should, we set it to 60 seconds and it still times out in about 20 seconds or less. I've Googled the issue and seen others note issues where a SP works fien directly but is slow via a data adpater call. Any ideas on how to resolve this?

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• ASP.NET/JavaScript: How to surround an auto generated JavaScript block with try/catch statement

  - by Rami Shareef

  In the Script documents that asp.net automatically generates how can I surround the whole generated scripts with try/catch statement to avoid 'Microsoft JScript Compilation error' My issue is: i got a DevExpress control (ASPxGridView) that added and set-up in run time, since i activated the grouping functionality in the grid I still get JS error says ';' expected whenever i use (click) on one of grouping/sorting abilities, I activated script Debugging for IE, in the JS code turns out that there is no missing ';' and once i click ignore for the error msg that VS generates every thing works fine, and surly end-user can't see this msg so i figured out if i try/catch the script that may help avoid this error. Thanks in advance

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• datatables.net plugin hides table behind left menu

  - by naveen

  I had a page that works perfectly in IE. Then I added the wonderful jQuery plugin datatables.net to it using this code in DOMReady with this code $('#articlestable-container table').dataTable({ "bPaginate": true, "bLengthChange": false, "bFilter": true, "bSort": false, "bInfo": false, "bAutoWidth": false }); Everything is fine in Webkit and Firefox browsers. See the image. But in IE, the table hides the menu that ideally should come over the table like this. As you can see, the sub-menu gets rendered behind the table. I don't think z-index is the culprit here. The sub-menu has z-index: 9999; anyway. What could be wrong? Any pointers to solve this will be very helpful.

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• Tips for optimizing C#/.NET programs

  - by Bob

  It seems like optimization is a lost art these days. Wasn't there a time when all programmers squeezed every ounce of efficiency from their code? Often doing so while walking 5 miles in the snow? In the spirit of bringing back a lost art, what are some tips that you know of for simple (or perhaps complex) changes to optimize C#/.NET code? Since it's such a broad thing that depends on what one is trying to accomplish it'd help to provide context with your tip. For instance: When concatenating many strings together use StringBuilder instead. If you're only concatenating a handful of strings it's ok to use the + operator. Use string.Compare to compare 2 strings instead of doing something like string1.ToLower() == string2.ToLower()

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• Pipe ffmpeg to oggenc(2) with .NET

  - by acidzombie24

  I am trying to encode ogg files at -q 6/192k. ffmpeg doesnt seem to be listenting to my command ffmpeg -i blah -acodec vorbis -ab 192k -y out.ogg So i would like to use the recommended ogg encoder. It says the input must be wav or similar. I would like to pipe a wav from ffmpeg to ogg. However not only am i unsure if oggenc2 will accept input from stdin, i have no idea how to pipe one process to another inside of .net using the Process class.

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• Reporting framework for extending definition & execution to the end users (ASP.Net)

  - by Kabeer

  Hello. My application is a product which will have reporting capabilities. The product, when in production, is expected to have several ad-hoc report defined by the end users. I am looking for a platform that can be tailored to harness the business entities and extend reporting capabilities (definition & execution) to the end user. Here are some constraints: From the usability standpoint, I like what MS Access reports offer. But of course it is not suitable for the target web application. However, it certainly is a source of inspiration usability wise. Cost is a constraint. So something recommended from open source world will be appreciated. Otherwise too I'd like to know. The product in question is somewhat 'generic' in nature. Mine is a ASP.Net platform.

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• How apply Unit tests in ASP.NET webforms

  - by gre3ns0ul

  Hi guys. I'm developing a website in asp.net webforms with 3 layers; UI, BLL and DAL The website is already developed, but i like have more control about the unit tests of each form Pass specific values at specific inputs for i see, if application survives or not. I already study about NUnit but in webforms in UI layer how can apply these tests? What i wnat is get some way to test UI (validations) without have to access to the BLL as i was an user. I'm trying to add the Unit tests to my app but i not sure how to do it! somebody can help my small-bigger problem? apreciated

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• ASP.NET MSSQL Select top N values but skip M results

  - by Mikey

  Im working on an ASP.Net project to display information on a website from a database. I want to select the top 10 items from a news table but skip the first Item and I'm having some problem with it. <asp:SqlDataSource ID="SqlDataSource1" runat="server" ProviderName="System.Data.SqlClient" ConnectionString="<%$ ConnectionStrings:ClubSiteDB %>" SelectCommand="SELECT top 5 [id], [itemdate], [title], [description], [photo] FROM [Announcements] order by itemdate desc"> </asp:SqlDataSource> This is what I have so far but i can't find any info online about how to skip a record

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