how to create a different namespace in a single project

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Hi guys. I am using Visual Studio 2008 to create a simple application. I have a single project called InventoryControlSystem. I wanted to make the code that accesses the database in a different class, so that my application will be 2-tier. I can add the a class to the project by right clicking on the project in Solution explorer.
But instead of adding the DataAccess class in the same namespace as the Windows Form class, I wanted to make it another namespace in the same project. The problem is I don't know how to it using VS 2008. It seems like one project is associated with one namespace.
Any ideas?

Thanks in advance

Posted 18-Apr-11 21:49pm

Bezawit

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2 solutions

Solution 1

Just change the namespace at the top of your class declaration, e.g.

C#

namespace MyApplication
{
    public class MyClass
    {
    }
}

C#

namespace MyApplication.Data
{
    public class MyDataClass
    {
    }
}

Projects will have a 'default namespace' setting in the project properties that get applied to new items being added, you can always change from this though.

You probably want to put your data access code in a new assembly though and reference this from your winforms application.

Posted 18-Apr-11 22:06pm

Dylan Morley

Comments

Sergey Alexandrovich Kryukov 19-Apr-11 11:38am

Correct. My 5.
In a way, name spaces are more stable than Assembly boundaries. There is nothing wrong with multiple name spaces per assembly; this is a very usual practice. Using default name space is not recommended.
--SA

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Kim Togo · Accepted Answer · 2011-04-19T02:53:00

Namespace naming guidelines is:

CompanyName.TechnologyName[.Feature][.Design]

For example:

HappyGoLucky.Database
HappyGoLucky.Media

In class file "DatabaseAccess.cs"

namespace HappyGoLucky.Database
{
  public class Access
  {
    public string Name
    {
      get
      {
        return "My name is Hans";
      }
    }
  }
}

And in your main program file "Program.cs"

namespace CoolProgram
{
  static class Program
  {
    static void Main()
    {
      HappyGoLucky.Database.Access d = new HappyGoLucky.Database.Access();

      Console.WriteLine("What is your name?");
      Console.WriteLine(d.Name);
      Console.ReadLine();
    }
  }
}