How do I set a default connection string in a console application?

c# entity-framework


In my MVC projects with a web interface, I'm used to setting the Connection String in the Web.Config file.

However, now I'm making a bog standard console application - also with a database hook, but how do I set the connection string globally for the application?

At the moment, I am setting

var dbIndex = new DBContext();
dbIndex.Database.Connection.ConnectionString = 
    "Data Source=USER-PC;Initial Catalog=TextProject.DBContext;" + 
    "Integrated Security=True;MultipleActiveResultSets=True";

but I have to set this connectionstring property every time, in all function calls. Is there a way to set a global connection string when I don't have a web.config?

7/18/2014 3:13:46 PM

Accepted Answer

So I think what your saying is that Entity Framework (I assume that is what you are using) looks for defaultConnection connection string.

You can try putting it in the app.config file as suggested by others, but I'm not sure if this will be automagically picked up by EF.

What you could do, if it doesn't work, is to create new class which inherits DbContext -

public class MyDbContext : DbContext
    public MyDbContext() : base()
        var cs = ConfigurationManager.ConnectionStrings["defaultConnection"]

        this.Database.Connection.ConnectionString = cs;                
7/18/2014 3:12:33 PM

Popular Answer

App.config is the equivalent to a Web.config for console or .exe programs.

  • Add a reference to System.Configuration on any project that you want to use the ConnectionStrings of the app.config
  • Add a AppConfig to your entry point project. This is the project that is executed. (e.g. console .exe)
  • Add the connection string in the <connectionStrings></connectionStrings> section of the app.config

Now place the connection string in your app.config

string connStr =ConfigurationManager.ConnectionStrings["ConnName"]


<?xml version="1.0" encoding="utf-8" ?>
    <add name="ConnName" connectionString="Data Source=USER-PC;Initial Catalog=TextProject.DBContext;Integrated Security=True;MultipleActiveResultSets=True" />

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