Global integer variable get zero after postback

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In my asp.net application I declare global variable and datatype is int. But when a postback happened it can not store the previous value. It becomes zero. I need to keep these values to use later. Is it possible. Please help me.

Posted 21-Nov-14 1:26am

Sumon562

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Mukesh Pr@sad 21-Nov-14 7:35am

u can use viewstate object or make that variable as static.

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Raul Iloc · Answer 1 · 2014-11-21T01:33:00

1.The web application is different then the desktop application. On each postback the entire application's objects that manage the UI events are recreated, so also the static variable.

2.In order the preserve the value between postbacks you have to cache their values. If is a global object that does not depends on the current web user (is at application level) you should cache it in Application cache, if the object depends only on each web user session, you should cache it on Session cache.

3.For details about saving the data state between postbacks and/or pages see the next link: http://msdn.microsoft.com/en-us/library/75x4ha6s(v=vs.100).aspx[^]

/\jmot · Answer 2 · 2014-11-21T01:51:00

try..

C#

public static int i = 0;
protected void Page_Load(object sender, EventArgs e)
{

}
protected void Button1_Click(object sender, EventArgs e)
{
    i++;
    lblMsg.Text = "Clicked"+i.ToString();
}

if you want to reset the value in page load then use..

C#

protected void Page_Load(object sender, EventArgs e)
{
 if (!IsPostBack)
 {
  i = 0;
 }

}

Manas Bhardwaj · Answer 3 · 2014-11-21T01:34:00

Solution 2

Use the IsPostBack [^]property to add a check on your Page_Load method.

C#

int i = 0;

private void Page_Load()
{
    if (!IsPostBack)
    {
       //only initialise if not a post back
       i = 100;
    }
}

Posted 21-Nov-14 1:34am

Manas Bhardwaj

Global integer variable get zero after postback

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