We have an existing Db with about 100 odd tables - These were created the old way - use sql queries to generate the Db and use the SQL reader/writer to access and update the DB's.( ADO.net). A developer prior to me added few new tables to this using the EntityFramework (EDMX) approach. They just named the tables generated newly "DBEntities" and used this as a data source for the new pages that were then written in ASP. net webforms(apsx).
I am now tasked with developing some of the newer pages on this existing webforms app to be built in Angular 2.0. I started off with consolidating the one DB that this app reads ( which were referencing both the EDMX file and ado.net - having two config file entries - add name ="DbConn" connection string "".. and add name="DBEntities" the edmx conn string".) I removed the edmx files , used the reverse poco generator and created first class POCO's and generated my tt file. Updated my web config to include only one connection string "DBConn". Tested the app - all the old web form pages were working well. Only those aspx pages(controls that use DataBind..) that were referencing the EDMX files gave me this error - The specified named connection is either not found in the configuration, not intended to be used with the EntityClient provider, or not valid.
I have tried everything(regenrated POCO's.. checked all the table names against the aspx data sources everything looks good..) and nothing seems to work. Using EF6. - Any help is appreciated..
Thanks much.
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I've been trying to store my strings in a database using resource files to fetch them. I've been following the guide from http://afana.me/post/aspnet-mvc-internationalization-store-strings-in-database-or-xml.aspx
The example works fine enough when i use his sql code based on ADO.net to fetch the strings from the database.
But i want to use Entity Framework to fetch the strings from the database, because my translation table is quite different. Could anyone show me an example of how to use Entity Framework in the resource project(assembly?), because i can't seem to get it to work. I cant import any of my models or contexts from my main project with "using", and it tells me i have duplicate models when i copy them to the resources project/assembly
I have a web solution that I upgraded to ASP.NET Identity 2.0. The problem i now face it that i have some solutions of this software running in production at several customers. When I try installing the new software (with ASP.NET Identity 2.0) on the existing database (full of their data). I then get an error: "The model backing the "ApplicationDbContext" context has changed singe the database was created"
How do i update the database in the existing solution to a database that fits the new ASP.NET Identity? I looked at the ASPnetUsers table and there has been added several new columns.
Is there a way to disable this check? Or is there a way to fix it?
Personally, I would create a new project/database containing just the ASP.Net Identity 2.0 features and create a dummy user (just to make sure that it all works correctly).
Then, use schema comparison between the new database and your existing database. You can then generate scripts to create the user tables in your customers' database.
You may still have further integration work to do, but it should get you over the hump.
I suppose you don't use EF code first. You could run your project in dev using code first and get the full DB structure including the Identity tables, then compare against the prod schema and implement the differences.
This should give you the hint:
http://blogs.msdn.com/b/webdev/archive/2013/12/20/updating-asp-net-applications-from-asp-net-identity-1-0-to-2-0-0-alpha1.aspx
Currently in my Asp.Net website I store localization texts in a table in the database. The table has three columns:
TextCode nvarchar(100),
CultureId int,
TextString nvarchar(MAX)
So every time when I need to get a localized text for a specific culture I just do a simple query.
The main advantage of this method is simple and also I can update the texts while my web app is running.
The obvious drawback is performance. I use resource files for localization in other desktop applications. The reason I chose database is I am under an impression that updating the resource file in asp.net will cause the web app to reload and thus I need to take the site offline when I update the resource file. Is assumption true? What's the "common" approach to store localized texts in Asp.Net?
Thanks
Common approach is to use Global and Local resource files. If you want to use database consider using asp.net cache with sql cache dependency. In application start, load all your resource data from sql server and store it in cache, and create a utility class to return data from cache based on resource key.
I am working on a web application project where the DAL is generated using LinqToSql designer in Visual Studio. All data access logic is in a separate project.
I created a copy of the database with same structure and same names for tables, views etc. I tried to change the connection string to the new source, but it is not working. Somehow, it still accesses the old database.
All of the following changes failed:
Changed the connection string in config files for all the projects in the solution which is now pointing to new data source.
Create a partial class for the DataContext and passed new connection string to the constructor after changing the connection string to "none" in Visual Studio LinqToSql designer properties.
Passed the connection string explicitly whenever I instantiated the DataContext.
Deleted the contents of bin and obj folders for the LinqToSql project and rebuilt everything.
My project is saving new data to the new datasource, but when reading data it is getting it from the old database, and also throwing null exceptions when it connects to the old DB for data.
What am I doing wrong? Is there any fix for this? What is the best way to make a project with LinqToSql DataContext point to a new datasource with the same data (for example: dev, staging, release, etc.)? Thanks.
If you are reading data from the old database, there must be a connect string or similar in your project that hasn't been updated.
There are three places where the LINQ to SQL designer might be storing the old connection information:
In the app.config file.
In the Settings.settings file.
In the default constructor for the DataContext.
Check all of them.
You could also use 'Find' to search your entire solution for any other references to the old database hard-coded into your application.
I am using MyGeneration.dOOdads which helps in generating Business layer and Data layer easily, but currently I am facing a problem with it.
I had worked with MS SQL database and was successful, but now I have to work with MySQL 5.
I have the generated data layer classes of MySQL database successfully, but when I add them in my project along with the reference of MyGeneration.dOOdads dll file it gives error of no MySql4Entity class in the namespace.
I have generated the class according to the given instructions and also added the reference of mysql.data in the project but still this error is occuring.
Please guide me if you have used MyGeneration.doodads for MYSQL5 database in asp.net.
Also please tell me how to make stored procedure using MyGeneration.doodads of MYSQL database?
open doodads project (source code) .. right click on MySql4Entity class (and other classes related to mysql) and choose 'properties' the choose build action as 'compile' from the list ... to compile the file then build the project and it its output as reference to your project ...