Solved

Gridview inside UpdaePanel does not update

Posted on 2010-08-30
6
416 Views
Last Modified: 2013-11-08
Hi
This is so simple yet difficult :)
Ihave the following
- updatePanel with UpdateMode="Conditional"
- Gridview inside the updatePanel with EnableSortingAndPagingCallbacks="True"  
- Button inside the updatePanel I called it updateBtn
- ScriptManager with EnablePartialRendering="True"

In the server side, at   protected void updateBtn_Click(object sender, EventArgs e) method
// execute query
Gridview.DataBind();
Gridview.SelectedIndex = -1;
updatePanel.Update();

The problem is: When I click the updateBtn button, The Gridview does not update, unless I click the button again or I click on a page number.

Q: How can I refresh a gridview using a button and an update panel
0
Comment
Question by:HandyManny
  • 3
  • 3
6 Comments
 
LVL 7

Expert Comment

by:urir10
ID: 33562420
try including that for your update panel

  <Triggers>
                            <asp:AsyncPostBackTrigger ControlID="updateBtn" EventName="Click" />
                     
   </Triggers>
0
 

Author Comment

by:HandyManny
ID: 33562443
@urir10:
I have already included the button as a trigger.
The button is working, but the gridview does not refresh unless I click the button twice or I click on a page number.
0
 
LVL 7

Accepted Solution

by:
urir10 earned 500 total points
ID: 33562495
do u have any other update panel as parents to that update panel?
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 

Author Comment

by:HandyManny
ID: 33562521
@urir10: No
I am pretty sure that the problem is realted to the post back thing.
You see, when I click the button again, the gridview refreshed. The same thing happens when I click on a page number of the gridview.

But I cannot figure it out because I am not expert with asp.net page life cycle  
0
 
LVL 7

Assisted Solution

by:urir10
urir10 earned 500 total points
ID: 33562538
can u post the code for the button as well as the markup for the page?
0
 

Author Comment

by:HandyManny
ID: 33562695
Well Thank you very much.
When I tried to re-write the code into simple version, I found the mistake.
The reason was the following:
I forgot to clear the data source before I execute the query. So the gridview is updated. However, the new data are appended at the bottom of the data source. Then when there is a postback, the data source some how re-sorted itself and then the new data can be seen at the top .
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

More often than not, we developers are confronted with a need: a need to make some kind of magic happen via code. Whether it is for a client, for the boss, or for our own personal projects, the need must be satisfied. Most of the time, the Framework…
Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
This video explains how to create simple products associated to Magento configurable product and offers fast way of their generation with Store Manager for Magento tool.
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

947 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now