How Can I access to the AppSetting inside a DbMigration?

Question

I need access on the Up() function to the appsetting from other project.

My problem is that I can not load a constructor in the migration.

public partial class MyMigration : DbMigration {    
    public override void Up() {
         // Here I need access to my appSettings    
    } 
}

May I ask why you need these app settings? IMO you shouldn't want to introduce that kind of dependency into your migrations code. — Gert Arnold, Jan 14 '19 at 16:10
Because I need search a substring that constains the appSettings of my web. — Carlos Tenorio Pérez, Jan 15 '19 at 07:23
It's a bussiness requirement, sorry. I can not describe more of the reasons. — Carlos Tenorio Pérez, Jan 15 '19 at 07:38

score 0 · Answer 1 · answered Jan 14 '19 at 16:10

Be carrefull with that, not a best practice. You also could have to rollback if you want your init app config back. This link could help you too: How to select different app.config for several build configurations

var path = @"C:\somepath\Configuration\App.config";
string confFolder = Path.GetDirectoryName(path);
var pathFilterRoot = Path.GetPathRoot(confFolder);
string configFileToOPen = Path.GetFileName(pathFilterRoot);

ExeConfigurationFileMap fileMapConfig = new ExeConfigurationFileMap  {
    ExeConfigFilename = Path.Combine(Path.GetFullPath(pathFilterRoot + "\\" + configFileToOPen))
};

System.Configuration.Configuration config = ConfigurationManager.OpenMappedExeConfiguration(fileMapConfig, ConfigurationUserLevel.None);

How Can I access to the AppSetting inside a DbMigration?

1 Answers1