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• Debugging Silverlight crash

  - by RHLopez

  I am trying to debug an IE 8 crash caused by a Silverlight application. I managed to find some articles on how to do a memory dump when a process crashes. I loaded the dump in windbg and ran !analyze -v. Below is the result. I am stuck at what further steps I can take to figure out what module or library that is running in Silverlight is causing the crash. So all I have right now is the crash in IE is caused by an Access violation (attempt to execute non-executable address) and from what is in the stack trace that some animation is running in Silverlight. Any tips or articles that would help me debug this will be appreciated. This dump file has an exception of interest stored in it. The stored exception information can be accessed via .ecxr. (1864.1560): Access violation - code c0000005 (first/second chance not available) eax=00000000 ebx=00000000 ecx=1b11fc58 edx=5c6f007d esi=00000000 edi=193b8e08 eip=00000000 esp=0f61f750 ebp=0f61f76c iopl=0 nv up ei pl nz na pe nc cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00010206 00000000 ?? ??? FAULTING_IP: +56b3952f04ebde68 748bc9f1 654c dec esp EXCEPTION_RECORD: ffffffff -- (.exr 0xffffffffffffffff) ExceptionAddress: 748bc9f1 ExceptionCode: c0000005 (Access violation) ExceptionFlags: 00000000 NumberParameters: 2 Parameter[0]: 00000008 Parameter[1]: 00000000 Attempt to execute non-executable address 00000000 PROCESS_NAME: iexplore.exe ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s. EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s. EXCEPTION_PARAMETER1: 00000008 EXCEPTION_PARAMETER2: 00000000 WRITE_ADDRESS: 00000000 FOLLOWUP_IP: agcore!CFrameworkElement::SetValue+1d7 5c704fa8 84c0 test al,al FAILED_INSTRUCTION_ADDRESS: +56b3952f04ebde68 748bc9f1 654c dec esp NTGLOBALFLAG: 0 APPLICATION_VERIFIER_FLAGS: 0 FAULTING_THREAD: 00001560 BUGCHECK_STR: APPLICATION_FAULT_SOFTWARE_NX_FAULT_NULL PRIMARY_PROBLEM_CLASS: SOFTWARE_NX_FAULT_NULL DEFAULT_BUCKET_ID: SOFTWARE_NX_FAULT_NULL LAST_CONTROL_TRANSFER: from 5c704fa8 to 00000000 STACK_TEXT: WARNING: Frame IP not in any known module. Following frames may be wrong. 0f61f74c 5c704fa8 1b17a134 193b8e08 0e690e14 0x0 0f61f76c 5c712360 0e690e14 1b17a134 0e690e14 agcore!CFrameworkElement::SetValue+0x1d7 0f61f788 5c7123a8 0e690e14 1b17a134 0e690e14 agcore!CShape::SetValue+0x72 0f61f7a0 5c70a6ff 0e690e14 1b17a134 00000000 agcore!CEllipse::SetValue+0x3b 0f61f7d0 5c752c2b 1b17a090 193b8e08 00000000 agcore!CAnimation::DoSetValue+0x50 0f61f810 5c7a7fb1 0f61f884 0f61f868 1b17a090 agcore!CAnimation::UpdateAnimationUsingKeyFrames+0x3b5 0f61f82c 5c707146 00000000 00000000 00000000 agcore!CAnimation::UpdateAnimation+0x184 0f61f87c 5c7071e5 3e4c8000 0f61f8cc 00000000 agcore!CTimeline::ComputeState+0x13a 0f61f89c 5c706d49 193f82b0 0f61f8cc 0f61f8d4 agcore!CTimelineGroup::ComputeState+0x8c 0f61f8ac 5c7069c7 3e4c8000 0f61f8cc 0b111f60 agcore!CStoryboard::ComputeState+0x48 0f61f8d4 5c706a29 0e6a0ca0 00000000 0e490070 agcore!CTimeManager::Tick+0x79 0f61f8e8 5c78f960 0b0e6d68 0f61f990 00000000 agcore!CCoreServices::Tick+0x21 0f61f940 5c706ac2 0b111f60 0e42ca08 ffffffff agcore!CCoreServices::Draw+0x140 0f61f964 67ac141c 0af99b90 00000000 0f61f990 agcore!CCoreServices::Draw+0x2d 0f61f9b4 67a933c2 0f61f9c8 00000000 00000000 npctrl!CXcpBrowserHost::OnTick+0x1b1 0f61f9e0 67a927c6 0064069c 00000402 00000000 npctrl!CXcpDispatcher::Tick+0xf3 0f61fa08 67a92709 0064069c 00000402 00000000 npctrl!CXcpDispatcher::OnReentrancyProtectedWindowMessage+0xcd 0f61fa28 764b6238 0064069c 00000402 00000000 npctrl!CXcpDispatcher::WindowProc+0xb8 0f61fa54 764b68ea 67a9269d 0064069c 00000402 user32!InternalCallWinProc+0x23 0f61facc 764b7d31 00000000 67a9269d 0064069c user32!UserCallWinProcCheckWow+0x109 0f61fb2c 764b7dfa 67a9269d 00000000 0f61fbb4 user32!DispatchMessageWorker+0x3bc 0f61fb3c 6fe504a6 0f61fb54 00000000 0ab11908 user32!DispatchMessageW+0xf 0f61fbb4 6fe60446 0af956a0 00000000 0b18a338 ieframe!CTabWindow::_TabWindowThreadProc+0x452 0f61fc6c 769d49bd 0ab11908 00000000 0f61fc88 ieframe!LCIETab_ThreadProc+0x2c1 0f61fc7c 76e53677 0b18a338 0f61fcc8 77829d72 iertutil!CIsoScope::RegisterThread+0xab 0f61fc88 77829d72 0b18a338 7dbc895d 00000000 kernel32!BaseThreadInitThunk+0xe 0f61fcc8 77829d45 769d49af 0b18a338 00000000 ntdll!__RtlUserThreadStart+0x70 0f61fce0 00000000 769d49af 0b18a338 00000000 ntdll!_RtlUserThreadStart+0x1b SYMBOL_STACK_INDEX: 1 SYMBOL_NAME: agcore!CFrameworkElement::SetValue+1d7 FOLLOWUP_NAME: MachineOwner MODULE_NAME: agcore IMAGE_NAME: agcore.dll DEBUG_FLR_IMAGE_TIMESTAMP: 4a67e422 STACK_COMMAND: ~44s; .ecxr ; kb FAILURE_BUCKET_ID: SOFTWARE_NX_FAULT_NULL_c0000005_agcore.dll!CFrameworkElement::SetValue BUCKET_ID: APPLICATION_FAULT_SOFTWARE_NX_FAULT_NULL_BAD_IP_agcore!CFrameworkElement::SetValue+1d7

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• March 21st Links: ASP.NET, ASP.NET MVC, AJAX, Visual Studio, Silverlight

  Here is the latest in my link-listing series. If you havent already, check out this months "Find a Hoster page on the www.asp.net website to learn about great (and very inexpensive) ASP.NET hosting offers.  [In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu] ASP.NET URL Routing in ASP.NET 4: Scott Mitchell has a nice article that talks about the new URL routing features coming to Web Forms...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Using C++0x Lambda Expressions in Microsoft Visual Studio

  In this C++ tutorial, learn how to utilize Lambda expressions in your C++ Applications.

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• question about STL thread-safe and STL debugging

  - by skydoor

  I have two questions about STL 1) why STL is not thread-safe? Is there any structure that is thread-safe? 2) How to debug STL using GDB? In GDB, how can I print a vector?

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• Visual Studio Talk Show #118 is now online - Command-Query Responsibility Separation (French)

  - by guybarrette

  http://www.visualstudiotalkshow.com Erik Renaud: La séparation des responsabilités entre les commandes et les requêtes Nous discutons avec Erik Renaud de la séparation des responsabilités entre les commandes et les requêtes (Command-Query Responsibility Separation - CQRS). La plupart des applications lisent les données beaucoup plus fréquemment qu'ils font des écritures. Sur la base de cette déclaration, une bonne idée consiste à séparer le code qui est responsable de l’écriture des données du code qui est responsable des requêtes (lecture). Erik Renaud est un coach .NET et co-fondateur de nVentive, une société conseil qui aide les équipes de développement logiciel au moyen de « coaching » et de « guidance ». Ses mandats courants se concentrent dans les grandes institutions financières en créant de nouvelles équipes qui supportent directement leurs activités primaires. Erik cumule plus de 10 ans d’expérience en développement logiciel, en faisant du coaching pour des équipes pour des besoins en architecture, modélisation et analyse. Pour la seconde année, il a reçu de Microsoft la reconnaissance MVP. Il est un ScrumMaster certifié, ce qui l’aide à guider les équipes vers le succès, et offre souvent des formations pour les technologies orientées objet. Il peut être rejoint au [email protected], ou vu tout partout où le kendo est pratiqué. var addthis_pub="guybarrette";

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• Visual Studio Talk Show #118 is now online - Command-Query Responsibility Separation (French)

  http://www.visualstudiotalkshow.com Erik Renaud: La sparation des responsabilits entre les commandes et les requtes Nous discutons avec Erik Renaud de la sparation des responsabilits entre les commandes et les requtes (Command-Query Responsibility Separation - CQRS). La plupart des applications lisent les donnes beaucoup plus frquemment qu'ils font des critures. Sur la base de cette dclaration, une bonne ide consiste sparer le code qui est responsable de lcriture des donnes du code qui est...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Quick C# Project Documentation in Visual Studio

  Here's a quick way to document your .NET projects.

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• Problems debugging virtual host with Netbeans

  - by WebDevHobo

  I'm running Ubuntu 9.10 I installed apache2 and downloaded the php 5.3.2 tar.gz, untarred and compiled. I then installed xdebug via pecl. After that I installed mysql-server and PhpMyAdmin. PhpMyAdmin can change apache2 settings, and now, xdebug is no longer included in my phpinfo(); overview. I've done a search for all possible php.ini files, but the 2 that I've found both link the xdebug.so file correctly. Yet still, Xdebug won't show. I have used and tested /etc/php5/php.ini and that worked, but it seems apache is now using a different php.ini file, and I don't know how to change that setting. Can anyone tell me how to bring it back to what it used to be? Also, installing apache, php and Xdebug was something I did by use of this video: http://vimeo.com/8005503

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• Using Basic File I/O in Visual Basic 2010

  Beginning with basic file I/O concepts this article wraps up by demonstrating how you can use the Dynamic Language Runtime (DLR) in .NET 4.0 to map text file data to objects.

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• Build an AJAX Content Management System with Visual WebGUI: Adding Menu Components

  Menus are basic components of any application. A well-designed menuing framework should be flexible, customizable for both look-and-feel and functionality, and easy to integrate into applications.

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• Debugging: Attach to Process for Console App running inside cmd.exe

  - by Chris

  How do you "Attach to Process..." for a console application thats running from a CMD window and not launched by F5? The reason I ask is because the application takes command line arguments and I want to have a genuine experience. I've even attaching to CMD.exe, but no luck, or setting a break-point using Console.ReadKey() with also no luck. I'm kind of at a loss here. Is this possible?

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• Debugging ASP.NET Strings Downloaded to Browser (Montréal instead of Montréal)

  - by jdk

  I'm downloading a vCard to the browser using Response.Write to output .NET strings with special accented characters. Mime type is text/x-vcard and French characters are appearing wrong in Outlook, for example Montréal;Québec .NET string shows as Montréal Québec in browser. I'm using this vCard generator code from CodeProject.com I've played with the System.Encoding sample code at the bottom of this linked MSDN page to convert the unicode string into bytes and then write the ascii bytes but then I get Montr?al Qu?bec (progress but not a win). Also I've tried setting content type to both us-ascii and utf-8 of the response. If I open the downloaded vCard in Windows Notepad and save it as ANSI text (instead of default unicode format) and open in Outlook it's okay. So my assumption is I need to cause download of ANSI charset but am unsure if I'm doing it wrong or have a misunderstanding of where to start. Update: Looking at the raw HTTP, it appears my French characters are being downloaded in the unexpected format so it looks like I need to do some work on the server side... (full size)

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• IE8 XmlHttpRequest Debugging

  - by Raegx

  I am looking for some way to elegantly inspect XmlHttpRequests in IE8. I wouldn't mind a plugin or an external program. I have yet to find anything that works nearly as well as Firebug. I have already tried Julien Couvreur's bookmark debugger, but it did not seem to work with Prototype. Julien's Script

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• DTaskManager Runtime '5' error?

  - by pcmantinker

  I really enjoy using DTaskManager as an alternative to Windows TaskManager, but recently I've been getting Runtime Error '5' messages. It looks like DTaskManager was programmed in Visual Basic 6, but it is quite powerful. I'm running Windows 7 Enterprise x64 so I suspect that the error might be coming from a Visual Basic runtime problem. I'm not sure which registry keys to edit to fix the Runtime Error '5' message.

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• Help debugging c fifos code - stack smashing detected - open call not functioning - removing pipes

  - by nunos

  I have three bugs/questions regarding the source code pasted below: stack smashing deteced: In order to compile and not have that error I have addedd the gcc compile flag -fno-stack-protector. However, this should be just a temporary solution, since I would like to find where the cause for this is and correct it. However, I haven't been able to do so. Any clues? For some reason, the last open function call doesn't work and the programs just stops there, without an error, even though the fifo already exists. I want to delete the pipes from the filesystem after before terminating the processes. I have added close and unlink statements at the end, but the fifos are not removed. What am I doing wrong? Thanks very much in advance. P.S.: I am pasting here the whole source file for additional clarity. Just ignore the comments, since they are in my own native language. server.c: #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <errno.h> #define MAX_INPUT_LENGTH 100 #define FIFO_NAME_MAX_LEN 20 #define FIFO_DIR "/tmp/" #define FIFO_NAME_CMD_CLI_TO_SRV "lrc_cmd_cli_to_srv" typedef enum { false, true } bool; bool background = false; char* logfile = NULL; void read_from_fifo(int fd, char** var) { int n_bytes; read(fd, &n_bytes, sizeof(int)); *var = (char *) malloc (n_bytes); read(fd, *var, n_bytes); printf("read %d bytes '%s'\n", n_bytes, *var); } void write_to_fifo(int fd, char* data) { int n_bytes = (strlen(data)+1) * sizeof(char); write(fd, &n_bytes, sizeof(int)); //primeiro envia o numero de bytes que a proxima instrucao write ira enviar write(fd, data, n_bytes); printf("writing %d bytes '%s'\n", n_bytes, data); } int main(int argc, char* argv[]) { //CRIA FIFO CMD_CLI_TO_SRV, se ainda nao existir char* fifo_name_cmd_cli_to_srv; fifo_name_cmd_cli_to_srv = (char*) malloc ( (strlen(FIFO_NAME_CMD_CLI_TO_SRV) + strlen(FIFO_DIR) + 1) * sizeof(char) ); strcpy(fifo_name_cmd_cli_to_srv, FIFO_DIR); strcat(fifo_name_cmd_cli_to_srv, FIFO_NAME_CMD_CLI_TO_SRV); int n = mkfifo(fifo_name_cmd_cli_to_srv, 0660); //TODO ver permissoes if (n < 0 && errno != EEXIST) //se houver erro, e nao for por causa de ja haver um com o mesmo nome, termina o programa { fprintf(stderr, "erro ao criar o fifo\n"); fprintf(stderr, "errno: %d\n", errno); exit(4); } //se por acaso já existir, nao cria o fifo e continua o programa normalmente //le informacao enviada pelo cliente, nesta ordem: //1. pid (em formato char*) do processo cliente //2. comando /CONNECT //3. nome de fifo INFO_SRV_TO_CLIXXX //4. nome de fifo MSG_SRV_TO_CLIXXX char* command; char* fifo_name_info_srv_to_cli; char* fifo_name_msg_srv_to_cli; char* client_pid_string; int client_pid; int fd_cmd_cli_to_srv, fd_info_srv_to_cli; fd_cmd_cli_to_srv = open(fifo_name_cmd_cli_to_srv, O_RDONLY); read_from_fifo(fd_cmd_cli_to_srv, &client_pid_string); client_pid = atoi(client_pid_string); read_from_fifo(fd_cmd_cli_to_srv, &command); //recebe commando /CONNECT read_from_fifo(fd_cmd_cli_to_srv, &fifo_name_info_srv_to_cli); //recebe nome de fifo INFO_SRV_TO_CLIXXX read_from_fifo(fd_cmd_cli_to_srv, &fifo_name_msg_srv_to_cli); //recebe nome de fifo MSG_TO_SRV_TO_CLIXXX //CIRA FIFO MSG_CLIXXX_TO_SRV char fifo_name_msg_cli_to_srv[FIFO_NAME_MAX_LEN]; strcpy(fifo_name_msg_cli_to_srv, FIFO_DIR); strcat(fifo_name_msg_cli_to_srv, "lrc_msg_cli"); strcat(fifo_name_msg_cli_to_srv, client_pid_string); strcat(fifo_name_msg_cli_to_srv, "_to_srv"); n = mkfifo(fifo_name_msg_cli_to_srv, 0660); if (n < 0) { fprintf(stderr, "error creating %s\n", fifo_name_msg_cli_to_srv); fprintf(stderr, "errno: %d\n", errno); exit(5); } //envia ao cliente a resposta ao commando /CONNECT fd_info_srv_to_cli = open(fifo_name_info_srv_to_cli, O_WRONLY); write_to_fifo(fd_info_srv_to_cli, fifo_name_msg_cli_to_srv); free(logfile); free(fifo_name_cmd_cli_to_srv); close(fd_cmd_cli_to_srv); unlink(fifo_name_cmd_cli_to_srv); unlink(fifo_name_msg_cli_to_srv); unlink(fifo_name_msg_srv_to_cli); unlink(fifo_name_info_srv_to_cli); printf("fim\n"); return 0; } client.c: #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <errno.h> #define MAX_INPUT_LENGTH 100 #define PID_BUFFER_LEN 10 #define FIFO_NAME_CMD_CLI_TO_SRV "lrc_cmd_cli_to_srv" #define FIFO_NAME_INFO_SRV_TO_CLI "lrc_info_srv_to_cli" #define FIFO_NAME_MSG_SRV_TO_CLI "lrc_msg_srv_to_cli" #define COMMAND_MAX_LEN 100 #define FIFO_DIR "/tmp/" typedef enum { false, true } bool; char* nickname; char* name; char* email; void write_to_fifo(int fd, char* data) { int n_bytes = (strlen(data)+1) * sizeof(char); write(fd, &n_bytes, sizeof(int)); //primeiro envia o numero de bytes que a proxima instrucao write ira enviar write(fd, data, n_bytes); printf("writing %d bytes '%s'\n", n_bytes, data); } void read_from_fifo(int fd, char** var) { int n_bytes; read(fd, &n_bytes, sizeof(int)); *var = (char *) malloc (n_bytes); printf("read '%s'\n", *var); read(fd, *var, n_bytes); } int main(int argc, char* argv[]) { pid_t pid = getpid(); //CRIA FIFO INFO_SRV_TO_CLIXXX char pid_string[PID_BUFFER_LEN]; sprintf(pid_string, "%d", pid); char* fifo_name_info_srv_to_cli; fifo_name_info_srv_to_cli = (char *) malloc ( (strlen(FIFO_DIR) + strlen(FIFO_NAME_INFO_SRV_TO_CLI) + strlen(pid_string) + 1 ) * sizeof(char) ); strcpy(fifo_name_info_srv_to_cli, FIFO_DIR); strcat(fifo_name_info_srv_to_cli, FIFO_NAME_INFO_SRV_TO_CLI); strcat(fifo_name_info_srv_to_cli, pid_string); int n = mkfifo(fifo_name_info_srv_to_cli, 0660); if (n < 0) { fprintf(stderr, "error creating %s\n", fifo_name_info_srv_to_cli); fprintf(stderr, "errno: %d\n", errno); exit(6); } int fd_cmd_cli_to_srv, fd_info_srv_to_cli; fd_cmd_cli_to_srv = open("/tmp/lrc_cmd_cli_to_srv", O_WRONLY); char command[COMMAND_MAX_LEN]; printf("> "); scanf("%s", command); while (strcmp(command, "/CONNECT")) { printf("O primeiro comando deverá ser \"/CONNECT\"\n"); printf("> "); scanf("%s", command); } //CRIA FIFO MSG_SRV_TO_CLIXXX char* fifo_name_msg_srv_to_cli; fifo_name_msg_srv_to_cli = (char *) malloc ( (strlen(FIFO_DIR) + strlen(FIFO_NAME_MSG_SRV_TO_CLI) + strlen(pid_string) + 1) * sizeof(char) ); strcpy(fifo_name_msg_srv_to_cli, FIFO_DIR); strcat(fifo_name_msg_srv_to_cli, FIFO_NAME_MSG_SRV_TO_CLI); strcat(fifo_name_msg_srv_to_cli, pid_string); n = mkfifo(fifo_name_msg_srv_to_cli, 0660); if (n < 0) { fprintf(stderr, "error creating %s\n", fifo_name_info_srv_to_cli); fprintf(stderr, "errno: %d\n", errno); exit(7); } // ENVIA COMANDO /CONNECT write_to_fifo(fd_cmd_cli_to_srv, pid_string); //envia pid do processo cliente write_to_fifo(fd_cmd_cli_to_srv, command); //envia commando /CONNECT write_to_fifo(fd_cmd_cli_to_srv, fifo_name_info_srv_to_cli); //envia nome de fifo INFO_SRV_TO_CLIXXX write_to_fifo(fd_cmd_cli_to_srv, fifo_name_msg_srv_to_cli); //envia nome de fifo MSG_TO_SRV_TO_CLIXXX // recebe do servidor a resposta ao comanddo /CONNECT printf("msg1\n"); printf("vamos tentar abrir %s\n", fifo_name_info_srv_to_cli); fd_info_srv_to_cli = open(fifo_name_info_srv_to_cli, O_RDONLY); printf("%s aberto", fifo_name_info_srv_to_cli); if (fd_info_srv_to_cli < 0) { fprintf(stderr, "erro ao criar %s\n", fifo_name_info_srv_to_cli); fprintf(stderr, "errno: %d\n", errno); } printf("msg2\n"); char* fifo_name_msg_cli_to_srv; printf("msg3\n"); read_from_fifo(fd_info_srv_to_cli, &fifo_name_msg_cli_to_srv); printf("msg4\n"); free(nickname); free(name); free(email); free(fifo_name_info_srv_to_cli); free(fifo_name_msg_srv_to_cli); unlink(fifo_name_msg_srv_to_cli); unlink(fifo_name_info_srv_to_cli); printf("fim\n"); return 0; } makefile: CC = gcc CFLAGS = -Wall -lpthread -fno-stack-protector all: client server client: client.c $(CC) $(CFLAGS) client.c -o client server: server.c $(CC) $(CFLAGS) server.c -o server clean: rm -f client server *~

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• Transforming Business Logic into Web Services Using DB2 9.5 and IBM Data Studio

  Learn how to take business logic such as stored procedures, functions, or SQL statements and turn them into a Web service.

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• Application Lifecycle Management with Visual Studio 2010 – Wrox Book

  - by Guy Harwood

  After running with a somewhat disconnected set of tools (vs 2008, Ontime, sharepoint 2007) for managing our projects we decided to make the move to Team Foundation Server 2010.  With limited coverage of the product available online i went in search of a book and found this… View this book on the Wrox website I must point out that i have only read 10 of the 26 chapters so far, mainly the ones that cover source code control, work item tracking and database projects.  This enables our dev team to get familiar with it before switching project management over at a future date. Needless to say i am very impressed with the detail it provides, answering pretty much every question i had about TFS so far.  I'm looking forward to digging into the sections on testing, code analysis and architecture. Highly recommended.

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• MSBuild fails, but building inside Visual Studio works fine

  - by Matt

  C#, .NET 2.0 I have an ASP.NET website in a solution, with 2 other projects (used as library references). When I build (debug or release) in Visual Studio, everything works fine. However, building with MSBuild fails. This build had been working (it's actually invoked via a nAnt task). The only thing that has changed is that I have a new user control whose Type I am referencing in my code behind. The offending code is in my ASPX code behind. MessageAlert is the UserControl: MessageAlert userControl = this.LoadControl("~/UserControls/MessageAlert.ascx") as MessageAlert; userControl.UserMessage = message; this.UserMessages.Controls.Add(userControl); In order to get Visual Studio to recognize the type 'MessageAlert' I had to: 1) Set the ClassName="MessageAlert" in the @Control markup at the top of the user control (because using the auto-generated UserControls_MessageAlert wasn't working either) 2) Register the user control in the markup of my ASPX, using an @Register 3) Add a "using ASP" to the top of my code behind After those steps, I could successfully reference the MessageAlert type in my codebehind from visual studio. But from MSBuild I get "The type or namespace name 'MessageAlert' could not be found (are you missing a using directive or an assembly reference?) " The MSBuild execution is very simple - it points the the very same solution file and sets the configuration property to release. It seems, based on the # of steps I had to go through to get Type references to MessageAlert in Visual Studio, that there is something missing in the MSBuild process. But what? Doesn't Visual Studio in fact invoke MSBuild behind the scenes? Is there a better way to reference a UserControl type in the code behind of an ASPX? EDIT: To clarify, the MessageAlert user control is not in the other referenced assemblies/projects. I mentioned them because, together with the website, the compose the Solution file, which is the same sln file being built by MS Build.

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• SQL Server Modeling Services with Microsoft Visual Studio 2010 Beta 2

  Learn how to use SQL Modeling Services to hunt for interdependencies without having to access source code.

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• SQL Server Modeling Services with Microsoft Visual Studio 2010 Beta 2

  Learn how to use SQL Modeling Services to hunt for interdependencies without having to access source code.

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• Generating EF Code First model classes from an existing database

  - by Jon Galloway

  Entity Framework Code First is a lightweight way to "turn on" data access for a simple CLR class. As the name implies, the intended use is that you're writing the code first and thinking about the database later. However, I really like the Entity Framework Code First works, and I want to use it in existing projects and projects with pre-existing databases. For example, MVC Music Store comes with a SQL Express database that's pre-loaded with a catalog of music (including genres, artists, and songs), and while it may eventually make sense to load that seed data from a different source, for the MVC 3 release we wanted to keep using the existing database. While I'm not getting the full benefit of Code First - writing code which drives the database schema - I can still benefit from the simplicity of the lightweight code approach. Scott Guthrie blogged about how to use entity framework with an existing database, looking at how you can override the Entity Framework Code First conventions so that it can work with a database which was created following other conventions. That gives you the information you need to create the model classes manually. However, it turns out that with Entity Framework 4 CTP 5, there's a way to generate the model classes from the database schema. Once the grunt work is done, of course, you can go in and modify the model classes as you'd like, but you can save the time and frustration of figuring out things like mapping SQL database types to .NET types. Note that this template requires Entity Framework 4 CTP 5 or later. You can install EF 4 CTP 5 here. Step One: Generate an EF Model from your existing database The code generation system in Entity Framework works from a model. You can add a model to your existing project and delete it when you're done, but I think it's simpler to just spin up a separate project to generate the model classes. When you're done, you can delete the project without affecting your application, or you may choose to keep it around in case you have other database schema updates which require model changes. I chose to add the Model classes to the Models folder of a new MVC 3 application. Right-click the folder and select "Add / New Item..."   Next, select ADO.NET Entity Data Model from the Data Templates list, and name it whatever you want (the name is unimportant).   Next, select "Generate from database." This is important - it's what kicks off the next few steps, which read your database's schema.   Now it's time to point the Entity Data Model Wizard at your existing database. I'll assume you know how to find your database - if not, I covered that a bit in the MVC Music Store tutorial section on Models and Data. Select your database, uncheck the "Save entity connection settings in Web.config" (since we won't be using them within the application), and click Next.   Now you can select the database objects you'd like modeled. I just selected all tables and clicked Finish.   And there's your model. If you want, you can make additional changes here before going on to generate the code.   Step Two: Add the DbContext Generator Like most code generation systems in Visual Studio lately, Entity Framework uses T4 templates which allow for some control over how the code is generated. K Scott Allen wrote a detailed article on T4 Templates and the Entity Framework on MSDN recently, if you'd like to know more. Fortunately for us, there's already a template that does just what we need without any customization. Right-click a blank space in the Entity Framework model surface and select "Add Code Generation Item..." Select the Code groupt in the Installed Templates section and pick the ADO.NET DbContext Generator. If you don't see this listed, make sure you've got EF 4 CTP 5 installed and that you're looking at the Code templates group. Note that the DbContext Generator template is similar to the EF POCO template which came out last year, but with "fix up" code (unnecessary in EF Code First) removed.   As soon as you do this, you'll two terrifying Security Warnings - unless you click the "Do not show this message again" checkbox the first time. It will also be displayed (twice) every time you rebuild the project, so I checked the box and no immediate harm befell my computer (fingers crossed!).   Here's the payoff: two templates (filenames ending with .tt) have been added to the project, and they've generated the code I needed.   The "MusicStoreEntities.Context.tt" template built a DbContext class which holds the entity collections, and the "MusicStoreEntities.tt" template build a separate class for each table I selected earlier. We'll customize them in the next step. I recommend copying all the generated .cs files into your application at this point, since accidentally rebuilding the generation project will overwrite your changes if you leave them there. Step Three: Modify and use your POCO entity classes Note: I made a bunch of tweaks to my POCO classes after they were generated. You don't have to do any of this, but I think it's important that you can - they're your classes, and EF Code First respects that. Modify them as you need for your application, or don't. The Context class derives from DbContext, which is what turns on the EF Code First features. It holds a DbSet for each entity. Think of DbSet as a simple List, but with Entity Framework features turned on.   //------------------------------------------------------------------------------ // <auto-generated> // This code was generated from a template. // // Changes to this file may cause incorrect behavior and will be lost if // the code is regenerated. // </auto-generated> //------------------------------------------------------------------------------ namespace EF_CodeFirst_From_Existing_Database.Models { using System; using System.Data.Entity; public partial class Entities : DbContext { public Entities() : base("name=Entities") { } public DbSet<Album> Albums { get; set; } public DbSet<Artist> Artists { get; set; } public DbSet<Cart> Carts { get; set; } public DbSet<Genre> Genres { get; set; } public DbSet<OrderDetail> OrderDetails { get; set; } public DbSet<Order> Orders { get; set; } } } It's a pretty lightweight class as generated, so I just took out the comments, set the namespace, removed the constructor, and formatted it a bit. Done. If I wanted, though, I could have added or removed DbSets, overridden conventions, etc. using System.Data.Entity; namespace MvcMusicStore.Models { public class MusicStoreEntities : DbContext { public DbSet Albums { get; set; } public DbSet Genres { get; set; } public DbSet Artists { get; set; } public DbSet Carts { get; set; } public DbSet Orders { get; set; } public DbSet OrderDetails { get; set; } } } Next, it's time to look at the individual classes. Some of mine were pretty simple - for the Cart class, I just need to remove the header and clean up the namespace. //------------------------------------------------------------------------------ // // This code was generated from a template. // // Changes to this file may cause incorrect behavior and will be lost if // the code is regenerated. // //------------------------------------------------------------------------------ namespace EF_CodeFirst_From_Existing_Database.Models { using System; using System.Collections.Generic; public partial class Cart { // Primitive properties public int RecordId { get; set; } public string CartId { get; set; } public int AlbumId { get; set; } public int Count { get; set; } public System.DateTime DateCreated { get; set; } // Navigation properties public virtual Album Album { get; set; } } } I did a bit more customization on the Album class. Here's what was generated: //------------------------------------------------------------------------------ // // This code was generated from a template. // // Changes to this file may cause incorrect behavior and will be lost if // the code is regenerated. // //------------------------------------------------------------------------------ namespace EF_CodeFirst_From_Existing_Database.Models { using System; using System.Collections.Generic; public partial class Album { public Album() { this.Carts = new HashSet(); this.OrderDetails = new HashSet(); } // Primitive properties public int AlbumId { get; set; } public int GenreId { get; set; } public int ArtistId { get; set; } public string Title { get; set; } public decimal Price { get; set; } public string AlbumArtUrl { get; set; } // Navigation properties public virtual Artist Artist { get; set; } public virtual Genre Genre { get; set; } public virtual ICollection Carts { get; set; } public virtual ICollection OrderDetails { get; set; } } } I removed the header, changed the namespace, and removed some of the navigation properties. One nice thing about EF Code First is that you don't have to have a property for each database column or foreign key. In the Music Store sample, for instance, we build the app up using code first and start with just a few columns, adding in fields and navigation properties as the application needs them. EF Code First handles the columsn we've told it about and doesn't complain about the others. Here's the basic class: using System.ComponentModel; using System.ComponentModel.DataAnnotations; using System.Web.Mvc; using System.Collections.Generic; namespace MvcMusicStore.Models { public class Album { public int AlbumId { get; set; } public int GenreId { get; set; } public int ArtistId { get; set; } public string Title { get; set; } public decimal Price { get; set; } public string AlbumArtUrl { get; set; } public virtual Genre Genre { get; set; } public virtual Artist Artist { get; set; } public virtual List OrderDetails { get; set; } } } It's my class, not Entity Framework's, so I'm free to do what I want with it. I added a bunch of MVC 3 annotations for scaffolding and validation support, as shown below: using System.ComponentModel; using System.ComponentModel.DataAnnotations; using System.Web.Mvc; using System.Collections.Generic; namespace MvcMusicStore.Models { [Bind(Exclude = "AlbumId")] public class Album { [ScaffoldColumn(false)] public int AlbumId { get; set; } [DisplayName("Genre")] public int GenreId { get; set; } [DisplayName("Artist")] public int ArtistId { get; set; } [Required(ErrorMessage = "An Album Title is required")] [StringLength(160)] public string Title { get; set; } [Required(ErrorMessage = "Price is required")] [Range(0.01, 100.00, ErrorMessage = "Price must be between 0.01 and 100.00")] public decimal Price { get; set; } [DisplayName("Album Art URL")] [StringLength(1024)] public string AlbumArtUrl { get; set; } public virtual Genre Genre { get; set; } public virtual Artist Artist { get; set; } public virtual List<OrderDetail> OrderDetails { get; set; } } } The end result was that I had working EF Code First model code for the finished application. You can follow along through the tutorial to see how I built up to the finished model classes, starting with simple 2-3 property classes and building up to the full working schema. Thanks to Diego Vega (on the Entity Framework team) for pointing me to the DbContext template.

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  - by OracleTechnologyNetwork

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  - by MPG

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• Book Review: ASP.NET 3.5 Enterprise Application Development with Visual Studio 2008

  Brian mains reviews the ASP.NET 3.5 Enterprise Application Development book

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• Visual Studio Talk Show #117 is now online - Microsoft Surface (French)

  http://www.visualstudiotalkshow.com Simon Ferquel et Thomas Lebrun: Microsoft Surface Nous discutons avec Simon Ferquel et Thomas Lebrun du systme informatique "Surface". Surface se prsente l'utilisateur comme une table dont le dessus est constitu d'une surface dot dun affichage tactile "multitouch" qui permet de manipuler un contenu informatique l'aide d'un cran tactile. Thomas Lebrun est architecte et dveloppeur chez Access IT Paris. Il est particulirement intress...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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