c# - The .mdf is not being created in App_Data -

-

i working on c# asp.net web forms project in visual studio ultimate 2013 while following http://goo.gl/1hk73 tutorial (but not doing exact same project). however, not make create .mdf file in app_date.

i have created entity classes, dbcontext, seeded 1 of table single item, added connectionstring web.config:

<add name="testingsystem" connectionstring="data source (localdb)\v11.0;attachdbfilename=|datadirectory|\studenttestingsystem.mdf;integrated security=true" providername="system.data.sqlclient" />

, , initialized database in global.asax.cs application_start() method:

database.setinitializer(new testingsystemdatabaseinitializer());

i have looked similar problems, nothing worked me (i had done or did not work).

i have refreshed app_data folder in solution explorer , used show files option nothing changed.

my testingsystemdatabaseinitializer:

using system.collections.generic; using system.data.entity;  namespace student_testing_system.models {     public class testingsystemdatabaseinitializer :     dropcreatedatabaseifmodelchanges<testingsystemcontext>     {         protected override void seed(testingsystemcontext context)         {             var root = new category()             {                 categoryid = 0,                 categoryname = "root",                 description = "default category",                 parentid = null,                 parent = null,             };              context.categories.add(root);         }     } }

context:

public class testingsystemcontext : dbcontext {     public testingsystemcontext()         : base("testingsystem")     {      }      public dbset<question> questions { get; set; }     public dbset<category> categories { get; set; }     public dbset<template> templates { get; set; }     public dbset<test> tests { get; set; }     public dbset<studygroup> studygroups { get; set; } }

moreover when updating database via update-database in pm errors:
entitytype 'identityuserlogin' has no key defined. define key entitytype. entitytype 'identityuserrole' has no key defined. define key entitytype.

both of classes part of entityframework , don't have data annotations [key] i'm not sure how solve this.

identityuserlogin:

public class identityuserlogin {     public identityuserlogin();      public virtual string loginprovider { get; set; }     public virtual string providerkey { get; set; }     public virtual identityuser user { get; set; }     public virtual string userid { get; set; } }

identityuserrole:

public class identityuserrole {     public identityuserrole();      public virtual identityrole role { get; set; }     public virtual string roleid { get; set; }     public virtual identityuser user { get; set; }     public virtual string userid { get; set; } }

to update database open tools->library package manager->package manager console , type in opened console

update-database

to restart localdb service open "developer command prompt vs.net" under start/programs menu->all programs->visual studio->visual studio tools

run following commands:

sqllocaldb.exe stop v11.0 sqllocaldb.exe delete v11.0

after execute "update-database" again.


Comments

Post a Comment

Popular posts from this blog

php - render data via PDO::FETCH_FUNC vs loop -

-
i've been using 2 methods render data. the first one: function name($id,$name){ return '<div id="'.$id.'">'.$name.'</div>'; } echo implode($pdo->query("select id,name user")->fetchall(pdo::fetch_func,'name')); the second one: $users = $pdo->query("select id,name user")->fetchall(pdo::fetch_obj); foreach($users $user){ echo name($user->id,$user->name); } i don't understand how pdo::fetch_func works. tried figure out. however, not well-documented. could please explain fetch mode? , also, 1 performs better? thank you. both methods wrong , have learn how use templates , how separate business logic presentation logic. $users = $pdo->query("select id,name user")->fetchall(pdo::fetch_obj); tpl::assign('users', $users); is code business logic part. then in template <?php foreach $users $row): ?> <div id="<?=$...
Read more

c++ - OpenCV Error: Assertion failed <scn == 3 ::scn == 4> in unknown function, -

-
i read alot other solution still confused should mine... #include <opencv2/objdetect/objdetect.hpp> #include <opencv2/highgui/highgui.hpp> #include <opencv2/imgproc/imgproc.hpp> #include <iostream> #include <stdio.h> using namespace std; using namespace cv; int main(int argc, const char** argv) { //create cascade classifier object used face detection cascadeclassifier face_cascade; //use haarcascade_frontalface_alt.xml library face_cascade.load("haarcascade_frontalface_alt.xml"); //setup video capture device , link first capture device videocapture capturedevice; capturedevice.open(0); //setup image files used in capture process mat captureframe; mat grayscaleframe; //create window present results namedwindow("outputcapture", 1); //create loop capture , find faces while (true) { //capture new image frame capturedevice >> captureframe; ...
Read more

The canvas has been tainted by cross-origin data in chrome only -

-
uncaught securityerror: failed execute 'getimagedata' on 'canvasrenderingcontext2d': canvas has been tainted cross-origin data i getting above error in chrome. code(following) works fine in mozilla. have not corss domain issue. why above error in chrome? var wheel_canvas, wheel_context, can_w, can_h, wheel_grd; var large_radius = 160; var small_radius = 120; var wheel_canvas = document.getelementbyid('wheel_canvas'); var wheel_context = wheel_canvas.getcontext('2d'); var can_w = $(wheel_canvas).width(); var can_h = $(wheel_canvas).height(); var centerx = can_w / 2, centery = can_h / 2; var wheel_grd = null; test('#ff0000'); function test(hex) { $('#clrpicker').css({'left': 210, 'top': 210 }); inverted = hexbw(hex); $('#color_val_show').val(hex); current_color_hex_val_selected = hex; $('#color_val_show').css({'color':inverted,'background':hex}); fillgradient...
Read more