how do I access the child controls from the parent page in asp.net c#

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I have 2 pages parent page and child I want to access the textboxes in the child page when I am in the parent page. is it possible?

Posted 5-Jan-15 3:05am

Bob712

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Praveen Kumar Upadhyay · Accepted Answer · 2015-01-05T03:11:00

Solution 1

There is a concept in asp.net called Cross Page Postback. This concept tells that you can postback to a different page and can access the objects/controls of the target page int the source page(where you have been posted).

Check out below article, this might help you.
Postback and Cross Page Posting in ASP.NET [^]

Posted 5-Jan-15 3:11am

Praveen Kumar Upadhyay

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Bob712 5-Jan-15 9:22am

I did like the example but I always have a null reference exception moreover I want to change the text of the textbox in the child page from the parent page

Praveen Kumar Upadhyay 5-Jan-15 9:36am

Before doing anything in the posted page. Try checking

if (Page.PreviousPage != null && Page.PreviousPage.IsCrossPagePostBack)
{
//here pass your code
}