objects that can be shared across multiple classes

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Hi,
I have a project that has 11 classes. Now each class refers to the tasklayer ( another set of multiple classes) and instantiates them everytime.

For ex:

TaskLayer: contains 3 classes under same namespace.
A.cs
------

public class A{}

B.cs
---------

public class B{}

C.cs
--------

public class C{}

MyProj: my classes needs to refer to tasklayer classes
_A.cs
------

using Tasklayer;
class _A
{
A a = new A();
B b = new B();
C c = new C();
}

_B.cs
-----

using Tasklayer;
class _B
{
A a = new A();
B b = new B();
C c = new C();
}

_C.cs
------

using Tasklayer;
class _C
{
A a = new A();
B b = new B();
C c = new C();
}

Now I dont wanna create a separate set of objects for each of these class in myproj.
I want to create a single of set of object of the tasklayer classes and referance those in my myproj classes.

Can you please tell me how to do that.

Posted 2-Jul-10 9:48am

ananya choudhury

Updated 2-Jul-10 9:52am

v2

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5 solutions

Solution 6

Hope this will Helps you

C#

public class A
  {
  }
  public class B
  {
  }
  public class C
  {
  }


  public class Common
  {
    private static A aInstance = new A();
    private static B bInstance = new B();
    private static C cInstance = new C();

    public static A AInstance
    {
      get { return Common.aInstance; }
      set { Common.aInstance = value; }
    }

    public static B BInstance
    {
      get { return Common.bInstance; }
      set { Common.bInstance = value; }
    }

    public static C CInstance
    {
      get { return Common.cInstance; }
      set { Common.cInstance = value; }
    }
   }

  public class _A
  {
    A a = Common.AInstance;
    B b = Common.BInstance;
    C c = Common.CInstance;
  }

Posted 4-Jul-10 19:38pm

Vineeth P Joseph

Updated 4-Jul-10 19:41pm

v3

Solution 5

Create a singleton class and access it using the same method (say getSingleton()) method. This should give you access to the same object in various different classes.

Posted 3-Jul-10 8:43am

Abhinav S

Comments

ananya choudhury 4-Jul-10 9:14am

Hi Abhanav,
Can you implement in a sample code, as shown above?

I am very new to this concept, so it would be great if I can see an example.

Thanks

Abhinav S 5-Jul-10 1:34am

One sample here - http://msdn.microsoft.com/en-us/library/ff650316.aspx

Solution 4

why dont you try creating a static helper class which would contain a method which can return you the instance of the class which you want to refer.

Posted 3-Jul-10 2:48am

Shining Legend

Solution 3

Hi Chetan,

Using public static, will only help to call the objects with the class name like
CommonInstance.a.FooFunction(a,a,a);

Here, CommonInstance.a in class _A is not pointing to the same instance as by CommonInstance.a in class _B.

My requirement is to call the same instance in multiple classes, and not create different copies.

Posted 3-Jul-10 2:30am

ananya choudhury

Comments

Toli Cuturicu 3-Jul-10 16:19pm

Reason for my vote of 1
fake answer

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Chetan Raiyani · Accepted Answer · 2010-07-03T00:41:00

Hi ananya,
"public static" is one of the solution for this...

C#

using tasklayer;
namespace MyProj
{
   public static class CommonInstance
   {
      public static A a = new A();
      public static B b = new B();
      public static C c = new C();
   }
   class _A
   {
     //Do here whatever you want to do
     CommonInstance.a.FooFunction(a,a,a);
   }
   class _B
   {
     //Do here whatever you want to do
     CommonInstance.a.FooFunction(b,b,b);
   }
   class _C
   {
      //Do here whatever you want to do
      CommonInstance.a.FooFunction(c,c,c);
   }
}