C# entity framework multiple databases

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WebFeb 5, 2014 · Entity Framework with multiple databases Ask Question Asked 9 years, 2 months ago Modified 9 years, 2 months ago Viewed 712 times 0 Is there anyway to map multiple SQL Server databases in a single EF context? For instance I'm trying to do something like this WebMay 11, 2024 · Supporting multi-tenancy. There are many approaches to implementing multi-tenancy in applications. One common approach (that is sometimes a requirement) is to keep data for each customer in a separate database. The schema is the same but the data is customer-specific. Another approach is to partition the data in an existing database by …

c# - Deleting object in Entity Framework by Id - Stack Overflow

WebAug 31, 2024 · 5. I have created an application (net core 2 & ef core) with Unit Of Work and Generic repository pattern. I used to have one database context but due to some business logic I had to create a second database with some same entities. For the sake of simplicity, I will use only one Entity, the ProductEntity and I will use only 1 repository method ... WebJan 18, 2014 · It is useful when using many DbContexts in you app. For example if you have thousands of tables - I just created so called "modules" with about hundred table per module. And each "module" has single context sometimes though I need to do cross-module data modifications in a single transaction Share Improve this answer Follow clean vomit from foam mattress

Entity Framework Core and Multiple Database Providers

WebWhen using Entity Framework (Database-First) to create multiple relationships to the same table, you can use naming conventions to control the generated property and … WebThe database has two schemas, dbo and notinapplication. I do not want to create model of notinapplication schema tables. ... c#; entity-framework; ef-code-first; asp.net-core-2.0; or ask your own question. ... Using Entity Framework 6 with Multiple DB Schemas but using One DBContext. 0. Entity Framework Core 3.0 - scaffold with design time ... cleanview mac

Entity Framework Return List from Stored Procedure

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WebMar 11, 2024 · Entity Framework Core can access many different databases through plug-in libraries called database providers. Current providers Important EF Core providers are built by a variety of sources. Not all providers are maintained as part of the Microsoft Entity Framework Core Project. http://olivierhelin.com/blog/entity-framework/entity-framework-6-one-entity-data-model-multiple-databases-2 cleanview onepass upright vacuumWebC# (Engels uitgesproken als "C sharp" ) is een programmeertaal ontwikkeld door Microsoft als deel van het .NET-initiatief, en later geaccepteerd als standaard door ECMA (ECMA-334) en ISO (ISO/IEC 23270). C# is objectgeoriënteerd en lijkt qua syntaxis en semantiek sterk op Java, maar bevat vooral in latere versies allerlei voorzieningen waardoor ook in … clean vomit from microfiber couch

"Web2 days ago · I'm quite new with Asp.net. Trying to learn, by doing small projects. I have issue (I'm stuck) where i want to store multiple values (provided by checkboxes) into single database table field. but can't get around how to correctly do it. " - C# entity framework multiple databases

C# entity framework multiple databases

c# - EF Code First Migrations for multiple databases - Stack Overflow

WebMay 14, 2024 · Select “Entity Framework 6.x” : Select required database objects you want to manage (in this example there is only a table named “People”) Rename the model namespace “SampleDB1_Model” to “SampleDB_Model” then click on Finish button. Our model is created, a class named “SampleDB_Entities” inherits of DbContext. WebJul 25, 2011 · For an example of developing an EF Code-First application that targets multiple databases, see the article "Entity Framework Code-First support for Oracle, MySQL, PostgreSQL and SQLite". When ...

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WebMar 15, 2016 · 3 Answers Sorted by: 5 Not all DB providers support distributed transactions. Using transaction scopes will try to enlist the DB transaction in a distributed transacation managed by MSDTC. If your provider doesn't support this, it will fail. SQL Server and Oracle providers support distributed transactions. But many other EF providers don't. WebSep 4, 2024 · If the databases can communicate to each other (ie on same server ), which appears to be already done since CustomCode contains lots of views and stored procedures that joins to Vendor and LogData then create a stored procedure to perform the desired queries ( which can join tables from separate databases ).

WebJan 6, 2014 · Entity framework code first migration to multiple database Ask Question Asked 9 years, 3 months ago Modified 7 years ago Viewed 9k times 3 Lets say we have the architecture model of web application where we have 1 database per 1 account. Database structure is the same for these accounts and differs only on data with in. Web1 day ago · Invalid object name 'dbo.__MigrationHistory' using Database.Create; EF6.02 when connection string is passed in 2 Upgraded EF5 to EF 6 and now get "Cannot find the object because it does not exist or you do not have permissions."

WebJul 20, 2015 · Each instance of your context has one database connection. Assuming that each child database wille have the same code-first model, you can launch one instance of the same context class for each database. Just call DbContext.Initialize ( true ) to migrate the database, then close the connection. WebSep 30, 2015 · This way in a multi-tenant application you can create database per tenant and use it. You don't need to change your webconfig to add connection string there, you can simply create connection string at run-time. Now you can design an structure to get context based on your tenant detection strategy.

WebAug 21, 2024 · You can separate your DbConfiguration for another project using web.config (or app.config) file and setting codeConfigurationType of entityframework xml node. So I use official configuration class as attribute for migration project , however I use my custom configuration class for main web project. – burcinsahin Apr 27, 2024 at 15:15

WebApr 10, 2024 · If you perform this query: var studentslist = dbContex.Students.ToList (); Each item on studentslist will have the 'Courses' collection null, because, although the connection/relation exists (between each table), you didn't specify that you wanted that collection populated. For that to happen you can change your query accordingly: var ... clean vitamin d for infantsWebMay 4, 2024 · So basically the steps for adding more DbContexts is to: Create a DbContext Class Create a Connection string for that DbContext in appsettings.json Add the DbContext to your configured services in Startup.cs Setup the DbContext in the controllers that will use it. cleanview car washWebDec 8, 2024 · Entity Framework Core migrations on multiple databases. I am creating a .NET 6 API using EF core with SQL Server, and trying to implement multiple databases that would different connection strings based on an id that is passed in from an identity token. Essentially, there would be multiple databases that each contain the same … clean vomit bathroomWebAug 15, 2014 · You just confirmed that all databases need to be upgraded the same time, then you only need to use one database to add the migration, then update it to all databases. You can specify the connection string name parameter based on connection string name in the config. cleanvest.orgWebApr 11, 2024 · Let's assume this table. Table "product". id bigint. name string. status int. The users can filter individually by choosing and combining different filters. So I have a list of filters which should be applied to the query. So if a user wants to filter only by id, I need a query which looks like this, but with the product.id filled by a variable. clean vines for jesusWebAug 23, 2024 · Using Entity Framework Core’s multiple database providers is an excellent option for folks selling on-premise software where customers demand … clean view windows worthingWebMay 25, 2024 · EF Core Migrations with multiple DbContexts on single database. I have an issue attempting to use Migrations in a ASP.NET Core solution using EF Core where there are multiple DbContext that share the same SQL database. In my application startup method I'm getting a reference to each context and calling the context.Database.Migrate … clean vs dirty dishwasher magnet