Can we use same Entity Model with sql compact file which is generated by sql server database.
I need to convert the sqlserver database to sql compact file and need to know if same model can be use in application or we need to generate the model again.
Tool: VS 2008 TEAM AND C#
This is possible.
But please don't forget to change the connection string, Provider and ProviderManifestToken attributes of the generated .edmx file.
Devart Team
http://www.devart.com/dotconnect
ADO.NET data providers for Oracle, MySQL, PostgreSQL, SQLite with
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I like to use a previous ADO.Net Entity Model, stored in another project (in the same solution) and imported like DLL in Blazor's ASP.NET Framework (not Core).
Unfortunately when i try to connect my context I receive that error: "No connection string named 'MyDBEntities' could be found in the application config file.".
I tried to configure appsettings.json:
"ConnectionStrings": {
"MyDBEntities": "xxxxxxxxxxxxxxxxxxxx"
}
and the startup.cs:
services.AddScoped<MyDBEntities>((_) => new MyDBEntities(Configuration.GetConnectionString("MyDBEntities")));
What am I doing wrong?
After some research, the best solution for implement a system like ADO.NET in .Net 6 with Blazor is to use EF Core Power Tools, a useful design-time DbContext features for connect your DB (in my case is SQL Server) and automate the creation or update of your tables.
It's very simple to install, configure and use like ADO.NET.
For more information about how install in your Visual Studio Solution, here is the link:
https://marketplace.visualstudio.com/items?itemName=ErikEJ.EFCorePowerTools
I am working on some security illustrations and therefore need to purposefully write insecure SQL queries.
The environment I am looking at is .NET Core (not full .NET), the driver used is EntityFrameworkCore and the database type is SQLite.
Regular connections using the built in lookup and query functions work without any issue. However there seems to be no function that would allow me to execute a raw SQL statement.
Several online resources recommend using the .FromSql() and .SqlQuery() methods on the database / context, but neither of these methods seems to exist in the .NET Core driver.
Is there any way to execute a raw SQL query in this setting?
As pointed at comment:
Check if there is Microsoft.EntityFrameworkCore.Relational reference on your project references(if you use sqllite it should be in the Microsoft.EntityFrameworkCore.Sqlite reference).
You could use the Nuget Package:
Microsoft.EntityFrameworkCore.Sqlite
and
db.Database.ExecuteSqlCommand("YOUR SQLITE SQL COMMAND");
where db is an instance of a class derived from DbContext
I'm starting a project and I will need to use the migrations provided by Entity Framework 6.
I found that SQLite does not have support for migrations.
SQL Server CE is the better option if I need to use the code-first migrations, or do I have other choices?
Remembering, I need a self-contained database engine.
No other choices, as far as I know
I have been working with Entity Framework with Microsoft SQL Server (via SqlClient) and recently required to connect to an external database via ODBC connection.
Here are my questions:
Is EF on ODBC doable?
IF yes, how? or If No, what other option if OBDC is a must.
Any sample EF on OBDC project for reference?
Thanks.
What would be a good choice for a local database to use with Entity Framework for an WPF application that needs local database.
I dont want to use MSSQL Server cos that'd be an overkill and or MSSQL CE cos few days back I was using SQL CE 3.5 and had all sorts of issues of it not supporting server generated IDs.
I've read MS Access has issues as well. and dont want to use SQLite either.
TIA
SQL Server Express sounds a good fit to me.
What about MySQL Embedded?
You can use either EF provider by Devart (it is a part of dotConnect for MySQL Professional), or the provider integrated into MySQL Connector /NET.