Find the current Active Directory Domain

While working with Active Directory within SharePoint we probably don’t need to specify the domain or the root container. We can the current values. Here is a simple method from a console application just to demonstrate:

internal static void GetDomain()
{
	var context = new DirectoryContext(DirectoryContextType.Domain);
	var domain = Domain.GetDomain(context);
	Console.WriteLine("Full domain:");
	Console.WriteLine(domain.Name); //takana.local
	Console.WriteLine();
	Console.WriteLine("root container");
	var parts = domain.Name.Split(new[] {"."}, StringSplitOptions.RemoveEmptyEntries);
	var dcParts = parts.Select(n => "dc=" + n).ToArray();
	var d = string.Join(",", dcParts); //dc=takana, dc=local
	Console.WriteLine(d);
}

First we get get the full domain, then we split and join them again.