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• How to use client side code in Visual studio ASP.NET

  - by Robert

  I am a quite new to web development and I am trying to do some small form updates without causing a postback. For example making a control visible when a drop down list is changed. I have so far come across some features that achieve this like the RequiredFieldValidator inside an update panels. However, these are specific to a single task. What are my options to achieve these client side updates in Visual Studio? At the moment I don't know any JavaScript, so I would prefer another solution if it exists.

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• How to implement a syndication receiver? (multi-client / single server)

  - by LeonixSolutions

  I have to come up with a system architecture. A few hundred remote devices will be communicating over internet with a central server which will receive data and store it in a database. I could write my own TCP/IP based protocol use SOAP use AJAX use RSS anything else? This is currently seen as one way (telemetry, as opposed to SCADA). Would it make a difference if we make it bi-directional. There are no plans to do so, but Murphy's law makes me wary of a uni-directional solution (on the data plane; I imagine that the control plane is bi-directional in all solutions (?)). I hope that this is not too subjective. I would like a solution which is quick and easy to implement and for others to support and where the general "communications pipeline" from remote deceives to database server can be re-used as the core of future projects. I have a strong background in telecomms protocols, in C/C++ and PHP.

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• 'client_errors' warning in output from cron job that runs PHP on GoDaddy

  - by Kevin

  Hi. I have several cron jobs that I've set up on my GoDaddy hosting account through their control panel. The commands look like this: /web/cgi-bin/php5 "$HOME/html/myfolder/cron_do_stuff.php" The jobs runs as scheduled, and the scripts work perfectly, and the output from the scripts always gets sent to my email address. I would love a way to disable this (since the PHP script can send it's own emails if it's necessary). But my real question is about the output, which always contains this on the first line: /web/cgi-bin/php5: Symbol `client_errors' has different size in shared object, consider re-linking Looks like a server configuration error to me, and after talking with GoDaddy they said it's a benign warning and not to worry about it. I was just curious if anyone had ideas for fixing it.

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• QScrollBar Snap to value

  - by j3frea

  Hi all, I'm wanting to implement a scroll bar that snaps to particular values (like windows can snap to the edge of a screen). The idea is that as I drag the scrollbar down it snaps the bar to values as it approaches them. My scenario is displaying 3 chapters of text. I would like to be able to snap to the beginning or end of a chapter. Of course, to go to the start of the first chapter the scrollbar one can just scroll to the top and likewise with the end of the third chapter. So I'd like to draw two lines on the scrollbar to represent the start of the second and third chapters and then have the top and bottom of the scrollbar snap to those lines. So I'm really actually wanting to use this within a QTextBrowser but I can control a QTextBrowser with a "QSnapScrollBar" I just don't really know where to start. Any help would be greatly appreciated.

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• How to use a CTabCtrl in a MFC dialog based application ?

  - by shan23

  I need to do something which i expected to be was simple - create a tab control which has 2 tabs, implying 2 modes of operation for my app. When user clicks on Tab1, he'll be presented with some buttons and textboxes, and when he clicks Tab2, some other input method. I noticed that there was a CTabCtrl class thats used in MFC to add tabs. However, once I added the tab ctrl using the UI designer, I couldn't specify how many tabs there'll be using property window. Searching on the net, I found some examples but all of them required you to derive from CtabCtrl , create 2 or more child dialogs etc and to write your own custom class. My question is, since I want to do something so basic, why couldn't I do it using the familiar Add Event handler/Add member variable wizard and then handle everything else inside my app's class ? Surely, the default CTabCtrl class can do something useful without needing to derive from it ?

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• toggle the grid cells value, ASP.net 3.5

  - by user92027

  Hi For my web application, I want a 10*10 (100 cells which is created dynamically) grid to be displayed in the following manner. 0) Initially all the cells' color is green. 1) If i click on any cell its color becomes red if it is green and if i click again it becomes red.(Toggle the cell color) 2) I should be able to display dynamic number of link buttons in each cell.On the click of which it pop ups a window. Are there any control available for this? Or how can i implement this functionality. I am using ASP.net 3.5.

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• What is the best solution to do Reporting on Object data for .NET ?

  - by Peter Fox

  Hi, Our projects are using objects as the data source to reports. Our business layer is returning single objects or IEnumerable. Our reports (quite complex) need to display value-type properties of the object, and its related objects. Typical case would be, from a List, display a master report with category data, then a subreport with data for each Product inside each Category, then a subreport for each Part of each Product, and so on. Reporting from the database is not an option for us. We have tried so far - Reporting Services : works but have to mess around with the XML definition of the report to define the datasource classes, very hard to work with if you use an object datasource, architecturally not too clean - Telerik Reports : quite nice (esp., nice architecture) but seems to have problems with complex reports (master/sub), does not give great paging control, rumored to have performance/crash problems (immature product). Does anyone know a good reporting solution that can be integrated in an ASP.NET application and works well with objects as datasources ?

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• to change the style of div

  - by ramyatk06

  hi guys, I have 2 buttons and 2 divs div1 and div2.On click button1 div1 is made visible and div2 invisible,On clicking button2 div2 is made visible and div1 is invisible. For that i used javascript. function showdiv2() { document.getElementById("div2").style.visibility="visible"; document.getElementById("div2").style.display="inline"; document.getElementById("div1").style.visibility="hidden"; document.getElementById("div1").style.display = "none"; document.getElementById("lbl_msg").innerHTML = "" } function showdiv1() { document.getElementById("div1").style.visibility="visible"; document.getElementById("div1").style.display="inline"; document.getElementById("div2").style.visibility="hidden"; document.getElementById("div2").style.display = "none"; document.getElementById("lbl_msg").innerHTML = "" } In div2 i have a gridview in which i have a linkbutton named lnkDelete.In its click control is going to div1.In click of lnkDelete,i want to make div1 invisible,but on clicking button1 div1 should be visible.Can anybody help to make div1 invisible in clickevent of lnkDelete in codebehind?

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• Large ResultSet on postgresql query

  - by tuler

  I'm running a query against a table in a postgresql database. The database is on a remote machine. The table has around 30 sub-tables using postgresql partitioning capability. The query will return a large result set, something around 1.8 million rows. In my code I use spring jdbc support, method JdbcTemplate.query, but my RowCallbackHandler is not being called. My best guess is that the postgresql jdbc driver (I use version 8.3-603.jdbc4) is accumulating the result in memory before calling my code. I thought the fetchSize configuration could control this, but I tried it and nothing changes. I did this as postgresql manual recomended. This query worked fine when I used Oracle XE. But I'm trying to migrate to postgresql because of the partitioning feature, which is not available in Oracle XE. My environment: Postgresql 8.3 Windows Server 2008 Enterprise 64-bit JRE 1.6 64-bit Spring 2.5.6 Postgresql JDBC Driver 8.3-603

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• Is it possible to destroy a CDI scope?

  - by Matt Ball

  I'm working on a Java EE application, primarily JAX-RS with a JSF admin console, that uses CDI/Weld for dependency injection with @ApplicationScoped objects. Minor debugging issues aside, CDI has worked beautifully for this project. Now I need some very coarse-grained control over CDI-injected object lifecycles. I need the ability to: Remove an injected object from the application context, or Destroy/delete/clear/reset/remove the entire application context, or Define my own @ScopeType and implementing Context in which I could provide methods to perform one of the two above tasks. I'm fully aware that this is across, if not against, the grain of CDI and dependency injection in general. I just want to know Is this remotely possible? If yes, what is the easiest/simplest/quickest/foolproofiest way to get the job done?

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• Besides EAR and EJB, what do I get from a J2EE app server that I don't get in a servlet container li

  - by dacracot

  We use Tomcat to host our WAR based applications. We are servlet container compliant J2EE applications with the exception of org.apache.catalina.authenticator.SingleSignOn. We are being asked to move to a commercial J2EE application server. The first downside to changing that I see is the cost. No matter what the charges for the application server, Tomcat is free. Second is the complexity. We don't use either EJB nor EAR features (of course not, we can't), and have not missed them. What then are the benefits I'm not seeing? What are the drawbacks that I haven't mentioned? Mentioned were... JTA - Java Transaction API - We control transaction via database stored procedures. JPA - Java Persistence API - We use JDBC and again stored procedures to persist. JMS - Java Message Service - We use XML over HTTP for messaging. This is good, please more!

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• Adding controls dynamically at design time vb.net

  - by chris

  I have been developing some custom smart tags. I am using a DesignerActionMethodItem which gets me to a fired method in code. When I try to hit the controls.Add the control is added but it seems the designer is unaware of it. It is never serialized and it goes away when the form is refreshed in the designer. Any help would be greatly appreciated. I am sort of stuck and google hasn't helped me. Please don't send me anything about smart tags that has nothing to do with adding controls dynamically at design time, I have already read so many looking for this.

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• ASP.Net: Scheduled tasks in a shared environment.

  - by UpTheCreek

  This is really an extension of this question, which asked the best way to schedule tasks which need to be performed periodically within ASP.NET in a normal environment. However, I would like to ask this specifically for a Shared Hosting Environment (most of the answers to the previous question would not work in a shared environment as far as I know). One obvious solution would be to have a page which is responsible to performing the tasks on the hosted machine, and call this page from another machine (that you have full control over) using e.g. a windows scheduled task. This is a bit nasty though - are there any better approaches?

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• How to retrieve a bigint from a database and place it into an Int64 in SSIS

  - by b0fh

  I ran into this problem a couple years back and am hoping there has been a fix and I just don't know about it. I am using an 'Execute SQL Task' in the Control Flow of an SSIS package to retrieve a 'bigint' ID value. The task is supposed to place this in an Int64 SSIS variable but I getting the error: "The type of the value being assigned to variable "User::AuditID" differs from the current variable type. Variables may not change type during execution. Variable types are strict, except for variables of type Object." When I brought this to MS' attention a couple years back they stated that I had to 'work around' this by placing the bigint into an SSIS object variable and then converting the value to Int64 as needed. Does anyone know if this has been fixed or do I still have to 'work around' this mess? edit: Server Stats Product: Microsoft SQL Server Enterprise Edition Operating System: Microsoft Windows NT 5.2 (3790) Platform: NT INTEL X86 Version: 9.00.1399.06

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• Distinguish UI change to variable from code-behind change

  - by Jay

  Like the title says I am trying to architecture into my application a way to distinguish the source of a variable change, either from UI or code-behind. My problem is that I need to trigger some action after a property changed its value, but I only need to do this when the change comes from the UI because otherwise I don-t want to perform that action. I am having some trouble because, for example when a checkbox(two way binding), changes state, my binded property gets updated and then I use the checked and uncheked events to trigger that action.The problem is that when I change the property in codebehind it also triggers those events and I do not want that. Right now, i am using a flag that enables, or not, the actions at the event handlers but I do not feel that this is a good idea. Any sugestions or ideas? I am considering using only one-way binding and control everything my self, using commands.

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• Invalid Memory Acess for JavaFX ScrollBar on Snow-Leopard

  - by Mike Caron

  I created the following JavaFX script, which when run, generates an Invalid memory access on Snow-Leopard. What is it about javafx.scene.control.ScrollBar that is causing a memory failure? Stage { title: "Scroll View" scene: Scene { content: [ ScrollBar { min: 0 max: 100 value: 0 blockIncrement: 10 vertical: false } ] } resizable: false } I'm using whatever JavaFX (at least 1.2) that comes with NetBeans 6.8: Product Version: NetBeans IDE 6.8 (Build 200912041610) Java: 1.6.0_17; Java HotSpot(TM) 64-Bit Server VM 14.3-b01-101 System: Mac OS X version 10.6.2 running on x86_64; MacRoman; en_US (nb)

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• tcpdf - HTML table showing up way too small

  - by LinuxGnut

  Hi folks. I'm using tcpdf (http://www.tcpdf.org/) to generate PDFs of some tables and images. The images are loaded without an issue, but I'm having issues with the writeHTML() function. I can't seem to control the font sizes or table width/height through the HTML, so I end up with a tiny, tiny, tiny table that you have to print of and squint at to even attempt reading. I've tried editing the table itself, CSS, even putting the table itself inside an h1, but nothing is changing the font size. I have the font size in tcpdf set to 16, but this also has no affect. Has anyone else run into this issue?

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• ASP.NET and SQL server with huge data sets

  - by Jake Petroules

  I am developing a web application in ASP.NET and on one page I am using a ListView with paging. As a test I populated the table it draws from with 6 million rows. The table and a schema-bound view based off it have all the necessary indexes and executing the query in SQL Server Management Studio with SELECT TOP 5 returned in < 1 second as expected. But on the ASP.NET page, with the same query, it seems to be selecting all 6 million rows without any limit. Shouldn't the paging control limit the query to return only N rows rather than the entire data set? How can I use these ASP.NET controls to handle huge data sets with millions of records? Does SELECT [columns] FROM [tablename] quite literally mean that for the ListView, and it doesn't actually inject a TOP <n> and does all the pagination at the application level rather than the database level?

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• How to dynamically modify NHibernate load queries at runtime? EventListeners? Interceptors?

  - by snicker

  I need to modify the query used to load many-to-one references in my model. Specifically, I need to be able to further filter this data. Unfortunately, NH will not allow me to filter many-to-one relationships using the built in filtering system (?). I could just be doing something incorrect. Is there a hook where I can manually and dynamically modify the query used to load the data? Or an alternative to filters that will allow me to specify parameters? Background: I am working with a database that is using a form of revision control, with each entity having a natural ID PK, an EntityId, a RevisionValidTo and RevisionValidFrom field. There may be many rows using the same EntityId, which is the reference for other tables to join on, but the Revision ranges are mutually exclusive. Thus, the relationship is only many-to-one IIF the filter is applied. However, NH offers no way to specify a filter on many-to-one references (they do for collections...)

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• How do i put a border on my grid in WPF?

  - by Jason94

  How do i put a border on my grid in C#/WPF? This is what i would like it to be, but puts a border around the whole thing instead of the grid control i put in my application. <Grid> <Border BorderBrush="Black" BorderThickness="2"> <Grid Height="166" HorizontalAlignment="Left" Margin="12,12,0,0" Name="grid1" VerticalAlignment="Top" Width="479" Background="#FFF2F2F2" /> </Border> ... and so on ...

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• Problem with LSParseDateTime function on server

  - by Saul

  When I run this test code on my development machine it works as expected. CF9.01 I am in europe using euro date format so 10/09/1957 is 10th Sept 1957. <cfset testDate="10/09/1957"> <cfoutput> Initial string = "#testDate#"<br> LSparsedatetime output = #lsparsedatetime(session.form.patientDOB)#<br> parsedatetime output = #parsedatetime(session.form.patientDOB)# </cfoutput> Output on test machine is Initial string = "10/09/1957" LSparsedatetime output = {ts '1957-09-10 00:00:00'} parsedatetime output = {ts '1957-10-09 00:00:00'} Same code , output on live server is Initial string = "10/09/1957" LSparsedatetime output = {ts '1957-10-09 00:00:00'} parsedatetime output = {ts '1957-10-09 00:00:00'} Server OS is Windows Web Server 2008 R2. I checked Control panel date and time setting and it is correctly set to London. Web server is IIS7 but I don't think that would affect anything? IN region and Language, location is set to United Kingdom and in Administrative (change system locale ) it is also correct as English (United Kingdom)

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• how do you reuse a partial view with setting different ids

  - by oo

  i have a partial view with a dropdown in it. the code looks like this: <%=Html.DropDownListFor(x => Model.Exercises, new SelectList(Model.Exercises, "Id", "Name", Model.SelectedExercise), new { @id = "exerciseDropdown", @class = "autoComplete" })%> the issue is that i want to reuse this partial view in multiple places but i want to have a different id assigned to the control (instead of exerciseDropdown always) but on the outside i only have this . . <% Html.RenderPartial("ExerciseList", Model); %> is there anyway to pass in an id into a partial view. is there a standard way to inject the ids into a partial view ? right now i am doing things like this: <% Html.RenderPartial("ExerciseList", Model); %> <% Html.RenderPartial("ExerciseList2", Model); %> where ExerciseList and ExerciseList2 are identical but with different ids but i am sure there is a better way.

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• Easy way to add multiple existing .csproj to a Visual Studio Solution?

  - by Michael J Swart

  I've checked out a branch of C# code from source control. It contains maybe 50 projects in various folders. There's no existing .sln file to be found. I intended to create a blank solution to add existing solutions. The UI only lets me do this one project at a time. Is there something I'm missing? I'd like to specify a list of *.csproj files and somehow come up with a .sln file that contains all the projects.

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• E.cancel loop in Visual basic

  - by Ahmed

  I am making an server control application ( simple with some buttons to start/stop the server ) And when the user wants to close the application there will be prompted an confirm box. Private Sub Form1_FormClosing(sender As Object, e As FormClosingEventArgs) Handles Me.FormClosing Dim response As Integer response = MsgBox("Are you sure you want to stop the server", vbYesNo, "Stop Server ?") If response = vbYes Then Shell("cscript ""stop.vbs""", 1) Close() Else e.Cancel = True End If End Sub That is the code I have now. But when I start the application and close it with the X button or with "Close Window" I will be prompted with the question until I click on no, then it will close. It's a loop and it stops when you first click on yes then on no. Can someone help me with solving this ?

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• Multithreading Errors in C#

  - by Adam

  Hi. I am trying to update a text box. I thought my threading code would fix the problem, but it does not. Can anyone help with this? new Thread((ThreadStart)delegate { txtCapacitance.Text = Math.Round(capacitance, 3).ToString(); }).Start(); Gives the following error: Cross-thread operation not valid: Control 'txtCapacitance' accessed from a thread other than the thread it was created on. Note that all this is being started by a dataReceived function which is called whenever USB data is received.

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