How to create database in another location instead of C:\users\USER in ASP.NET core 2.2

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I want to create database in a folder in my project, but by default the database is created in C:\Users\USER.

This is my appsetting.json :

"ConnectionStrings": {
"MvcMusicStoreContext":
"Server=(localdb)\\mssqllocaldb;Database=MvcMusicStoreContext;Trusted_Connection=True;MultipleActiveResultSets=true"

}

How to change database location to another folder in my computer. I use asp.net core 2.2 in Visual Studio 2017

What I have tried:

I use asp.net core 2.2 in Visual Studio 2017

Posted 10-Jan-20 23:33pm

Reza kavian

Updated 8-Dec-21 22:28pm

v2

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Comments

Richard MacCutchan 11-Jan-20 5:35am

Use a full path rather than just a filename in your connection string.

[no name] 11-Jan-20 5:59am

Can you give me an example of how to do it?

3 solutions

Solution 1

If you are using the (localdb) designation then the file will be stored in the default location as described at Creating a Connection String and Working with SQL Server LocalDB | Microsoft Docs[^]. For other options see SQL Server Connection Strings for ASP.NET Web Applications | Microsoft Docs[^].

Posted 11-Jan-20 0:20am

Richard MacCutchan

Solution 3

public Startup(IConfiguration configuration, IWebHostEnvironment env)
{
Configuration = configuration;
string appRoot = env.ContentRootPath;
Environment.SetEnvironmentVariable("DataDirectory", Path.Combine(appRoot, "App_Data"));
}

"DefaultConnection": "Server=(localdb)\\mssqllocaldb;AttachDBFilename=%DataDirectory%\\aaa.mdf;Trusted_Connection=True;ConnectRetryCount=1",
use Environment.ExpandEnvironmentVariables 2 replace EnvironmentVariables (%DataDirectory%)
var ss = Environment.ExpandEnvironmentVariables(Configuration.GetConnectionString("DefaultConnection"));

Posted 8-Dec-21 22:28pm

Member 10768011

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Reza kavian · Accepted Answer · 2020-01-12T04:12:00

i change ConnectionStrings with AttachDBFileName:

"ConnectionStrings": {<br />
    "MvcMusicStoreContext":<br />
    "Server=(localdb)\\MSSQLLocalDB;AttachDBFilename=[DataDirectory]\\App_Data\\MvcMusicStoreContext.mdf;Trusted_Connection=True;MultipleActiveResultSets=true"<br />
  }

and in ConfigureServices in startup:

string path = Directory.GetCurrentDirectory(); <br />
<br />
  services.AddDbContext<MvcMusicStoreContext>(options =><br />
                  options.UseSqlServer(Configuration.GetConnectionString("MvcMusicStoreContext")<br />
                  .Replace("[DataDirectory]",path)));