Ok, but what about the following settings that we were using before the Configuration is obsolate?
public Configuration()
{
//AutomaticMigrationsEnabled = true; //it is Ok for now as default value is true
//what about the following settings???
AutomaticMigrationDataLossAllowed = true; //Attention when using this!!!
MigrationsDirectory = @"Migrations";
ContextKey = "Demo.Domain.DemoDbContext";
}
Where can I set these settings?
Install EntityFrameworkCore.Tools
package for using commands like Add-Migration and Update-Database in Package Manager Console. You don't need to call Enable-Migrations, and as a side note AutomaticMigrationsEnabled
is obsolete.
In the PM Console you can always run the --help
command with: dotnet ef migrations add --help
.
Then you will be able to see all the configuration needed:
Usage: dotnet ef migrations add [arguments] [options]
Arguments:
<NAME> The name of the migration.
Options:
-o|--output-dir <PATH> The directory (and sub-namespace) to use. Paths are relative to the project directory. Defaults to "Migrations".
--json Show JSON output.
-c|--context <DBCONTEXT> The DbContext to use.
-p|--project <PROJECT> The project to use.
-s|--startup-project <PROJECT> The startup project to use.
--framework <FRAMEWORK> The target framework.
--configuration <CONFIGURATION> The configuration to use.
--runtime <RUNTIME_IDENTIFIER> The runtime to use.
--msbuildprojectextensionspath <PATH> The MSBuild project extensions path. Defaults to "obj".
--no-build Don't build the project. Only use this when the build is up-to-date.
-h|--help Show help information
-v|--verbose Show verbose output.
--no-color Don't colorize output.
--prefix-output Prefix output with level.
For example if you want to set the directory to Migrations (it is the default):
dotnet ef migrations add MyMigration --output-dir Migrations
Or add a migration while specifying the DbContext:
dotnet ef migrations add MyMigration --context MyDbContext
Enable-Migrations was for the older version. new version support to the Add-migration
first enter add-migration "setupName" .
setup name is a any recognizable name eg: add migration "initialSetup"
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