!ispostback is not work well its work every time when page is load

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1.00/5 (2 votes)

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C#

protected void Page_Load(object sender, EventArgs e)
   {
       if (!IsPostBack)
       {
        int i=0;
        //some code related to i//
       }
   }


protected void _lblnext_Click(object sender, EventArgs e)
{
 i+=1;
 //code related to i//
}

I always initialized with 0 when page is load whenever it is in (!ispostback) code

Posted 3-Oct-12 23:08pm

Dev Ashish Jangid

Updated 3-Oct-12 23:09pm

Kenneth Haugland

v2

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Sergey Alexandrovich Kryukov 16-Feb-13 1:15am

Please stop posting non-answers as "solution". It can give you abuse reports which eventually may lead to cancellation of your CodeProject membership.
—SA

2 solutions

Solution 3

Tell me how can u access local variable i in _lblnext_Click()? Explain what u want ?

Posted 3-Oct-12 23:14pm

solanki.net

Updated 3-Oct-12 23:15pm

v2

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Mohd. Mukhtar · Accepted Answer · 2012-10-03T23:52:00

Hi Ashish,

Please understand the concept of static variable.
By default its value set to 0(zero), and its value retain in between function switch call.

But here in your case you have declared static variable into the class and assigning the value in page_load event, you want to access same value in postback request. This is not possible with static variable the value of i will not be available in next postback request.

To implement this you can use session variable or viewstate.

use below code:

C#

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
         Session["abc"] = 0
         //some code related to i//
        }
    }
 
 protected void _lblnext_Click(object sender, EventArgs e)
 {
  int i=0;
  if(Session["abc"] !=null)
      i= Convert.ToInt32(Session["abc"]);
  else 
  {
    //return some error
  }
i+=1;
  //code related to i//
Session["abc"]=i;
 }