visual-studio-lightswitch

问题 Trying to connect to and modify existing data in a MySQL table. The reading working fine but when trying to save a change, the following error occurs. An error occurred while starting a transaction on the provider connection. See the inner exception for details. Inner exception message: Nested transactions are not supported. Using MySQL Connector Net 6.4.3 Answer I found an answer that works in my case. Add the code below to the datasource code using System.Transactions; namespace

问题 I want to be able to override the default save button on the html client however i cant seem to find the control to do so. I want to write some validation behind it and allow the user to select an option but I just cant seem to find it. I know the silverlight client you can override it but just cant seem to override it in the html client. thanks 回答1: It's achieved using beforeApplyChanges. example: (Please excuse any typos/syntax errors, you get the rough idea!) myapp.AddEditScreen

问题 I am supposed to find a bug in Lightswitch C# application written in VS2012 which causes application to hung when delete button is clicked. I am new to LS and have problem figuring out how to find the internal code is executed when that button is selected. Even when I try to override action of this button debugger doesn't stop there. Debugging just my code is turned off, on screen data binding I see some name I cannot find in the code. Anybody here has some experience with lightswitch to

问题 I have a desktop application developed with Lightswitch using Visual Studio 2012. The app installs perfectly on a Windows 7 machine but when I try to install it on an XP SP3 machine I get: setup.exe is not a valid Win32-Application I've tried using: editbin setup.exe /SUBSYSTEM:WINDOWS,5.01 /OSVERSION:5.1 but then I get the following error: the procedure entry point InitializeCriticalSectionEX could not be located in the dynamic link library Kernal32.dll I've spent ages getting this rapid

问题 Is it possible to have a "Time" datatype only in Visual Studio LightSwitch? Regards 回答1: This should help: Walkthrough: Creating a Business Type Extension http://msdn.microsoft.com/en-us/library/hh290140.aspx 来源： https://stackoverflow.com/questions/7050656/time-datatype-in-visual-studio-lightswitch

问题 I am trying to set set the font of a TextBox in LightSwitch. I am not sure if there is a problem with my code, or if this just isn't possible. The code executes, and I have stepped through it to make sure it executes, and all code is reached and executed, but there is not change to the controls on the screen. My code is: private void SetMono(string controlName) { var ctrl = this.FindControl(controlName); if (ctrl != null) { ctrl.ControlAvailable += (s, e) => { if (e.Control is TextBox) // I

问题 I am trying to set set the font of a TextBox in LightSwitch. I am not sure if there is a problem with my code, or if this just isn't possible. The code executes, and I have stepped through it to make sure it executes, and all code is reached and executed, but there is not change to the controls on the screen. My code is: private void SetMono(string controlName) { var ctrl = this.FindControl(controlName); if (ctrl != null) { ctrl.ControlAvailable += (s, e) => { if (e.Control is TextBox) // I

问题 Is there any way i can trace when user has Login (i.e. insert time of login in a log table) and how many users are currently active. I am using Form Authentication. I have search but i got stuff regarding custom login page. Is it possible to trace this using form authentication? i have tried to insert a log into table on Application_LoggedIn Private Sub Application_LoggedIn() Dim A = Application.Current.CreateDataWorkspace.ApplicationData.Logtable.AddNew() A.name = User.Name A.time = DateTime

问题 I have made a Lightswitch v1 (2011) Desktop application on Visual Studio 2010 Professional. My OS is 32 bit Windows 7 Professional. The application connects to an SQL Server 2005 database, using SQL Server Authentication. On clients running 64 bit Windows, my application is unable to load data. (It shows the dreaded red-X, that everyone using Lightswitch is all too familiar with). I was able to enable tracing and get a detailed error message, but still don't know what to do about it. Error

问题 After resolving some issues with deployment of my LightSwitch app to Azure, I was able to get the Azure Management Portal to report that everything was up and running fine. However when I try to access the site, I receive: Server Error 403 - Forbidden: Access is denied. You do not have permission to view this directory or page using the credentials that you supplied. This happens regardless of whether I have HTTPS required or not and regardless of the browser used. When this point is reached,