How to dispose global objects

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Hey guys I am using methods of class in other class by making objects like

DO_AddData ObjAddData = new DO_AddData();----Do_AddData other class
this is defined globally in my current class.

i use ObjAddData in many methods of current class .After that i want to dispose this objects..

I try "using" keyword but it's good for local objects which has local scope only...

I also used try finally like

try
{
///////
}

finally
{
((System.Idisposable)).dispose();

}
but it throws exceptions like...

"Unable to cast object of type 'Penmia.Objects.DO_AddData' to type 'System.IDisposable'."

So is there any suitable scenerio for disposing global objects.

Please provide any solution
thank n regards
Rahul
}

Posted 27-Nov-13 22:28pm

Rahul_Pandit

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Sergey Alexandrovich Kryukov 28-Nov-13 4:35am

There are no "global objects" in .NET, nothing to dispose... :-)
—SA

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Sergey Alexandrovich Kryukov · Answer 1 · 2013-11-27T22:39:00

Solution 1

Invalid question and purely artificial "problem". Please see my comment to the question.

You never ever should cast to IDisposable. If some type does implements this interface, the Dispose call won't need the case, if not, the object don't need to be disposed at all.

I don't know if you understand that this interface is generally unrelated to reclaiming of managed memory. Such reclaiming is done by the Garbage Collector after objects become unreachable. So, just in case, please read about it: http://en.wikipedia.org/wiki/Garbage_collection_%28computer_science%29[^].

—SA

Posted 27-Nov-13 22:39pm

Sergey Alexandrovich Kryukov

Comments

Rahul_Pandit 28-Nov-13 4:47am

yeah but there is requirement,we can't believe on garbage collector for disposing...

I am creating a object to access other class method and now i want to dispose this object..And this object is used globally in my whole class.

Now tell me is it clear.

Sergey Alexandrovich Kryukov 28-Nov-13 10:12am

Please stop it. You just don't understand what dispose does and what should be cleaned up. If you think you need to dispose, please explain what are you going to do in dispose. "Object is used globally in my whole class" is just gibberish, it cannot be clear or unclear. You need to understand types vs objects.
—SA

Karthik_Mahalingam · Answer 2 · 2013-11-27T23:23:00

Solution 2

HI
try like this...

C#

public class OtherClass
      {
          public void somemethod()
          {

              using (DO_AddData obj = new DO_AddData ())
              {

// ur coding here...

              }

          }
      }



      public class DO_AddData : IDisposable
      {
          public void Dispose()
          {
             //
          }
      }

for more info on Using statement pls go through this link

http://msdn.microsoft.com/en-us/library/vstudio/yh598w02.aspx[^]

Posted 27-Nov-13 23:23pm

Karthik_Mahalingam

Comments

Rahul_Pandit 28-Nov-13 5:36am

public class OtherClass
{

DO_AddData obj = new DO_AddData ();

protected void page_load()
{
public void somemethod()
{

string str="hello";
obj.insert(str);

}
public void method2()
{
string str="hEY";
obj.insert(str);

}
}

}
protected void button_click()
{
string str="hello all";
obj.insert(str);
}

public class DO_AddData
{
public void insert(STRING STRPARAM)
{
/////insert in database
}
}

it's very related to my code ...now provide my any solution

Karthik_Mahalingam · Answer 3 · 2013-11-28T00:35:00

try this solution..

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace POC
{
    public partial class WebForm2 : System.Web.UI.Page
    {
        DO_AddData obj = new DO_AddData();
        protected void Page_Load(object sender, EventArgs e)
        {
            somemethod();
            method2();
        }
        public void somemethod()
        {
            using (obj)
            {
                string str = "hello";
                obj.insert(str);
            }

        }
        public void method2()
        {
            using (obj)
            {
                string str = "hEY";
                obj.insert(str);
            }

        }
    }

    public class DO_AddData : IDisposable
    {
        public void insert(string STRPARAM)
        {
            /////insert in database
        }

        public void Dispose()
        {
            // dispose all the objects used in this class
        }
    }
}

How to dispose global objects

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