label , drop down becomes null during ajax call?

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Hii ,

On page load i am firing methiod which sets value to controls , labels , dropdown and other things ..

i am making other ajax call from other link , and that webmethod again calling my first method , but this time ..all controls gets null and not be able to set value and throwing an error object reference not set to instance of an object

Posted 31-Jul-14 20:53pm

Torakami

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Kumarbs 1-Aug-14 2:59am

In service method, no controls will be identified.

Torakami 1-Aug-14 3:06am

from service method i am calling my other method which is normal public method , there controls gets null

Torakami 1-Aug-14 3:08am

My normal public method is the one which gets call on page load even ... but the same method when i try to call from service method , controls becomes null and further value not be able to assign , and hence getting an error ..please suggest

Kumarbs 1-Aug-14 3:10am

No matter which method you called, you won't get the controls in the web methods. They are pure c# methods, you won't identify any asp.net control.

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jacobjohn196 · Answer 1 · 2014-07-31T21:03:00

Solution 1

Put your page_load code inside "if(!IsPostBack)"

C#

protected void Page_Load(object sender, EventArgs e)
 {
     if (!IsPostBack)
     {
        //Your Code to set value to control
     }
 }

Posted 31-Jul-14 21:03pm

jacobjohn196