Welcome Guest Search | Active Topics | Sign In | Register

How can I refresh a grid control in conjunction with progress bar? Options
Avatar CTS
Posted: Monday, May 7, 2012 9:42:29 PM
Rank: Newbie
Groups: Member

Joined: 3/7/2011
Posts: 2
Hi,

I really liked the progress bar and spent some time figuring out how to integrate into my application. I now have a really great indicator for the progress of building a list of objects to be displayed in the grid control.

However, the grid control is never refreshed once the progress bar is finished. I can trace the server side code and the Grid1.DataSource and Grid1.DataBind commands are definitely being executed.

After much tinkering with Update Panels (thinking that was the root cause) I was finally able to determine that NO page controls are refreshed at the end of the Run Task method, and I now have a new appreciation for this comment, in the sample code:

//You can not change anything else in the page inside
//RunTask handler except for calling UpdateProgress.
//If you do need to change other contents on the page
//based on progress information, you can make use of
//the second parameter of UpdateProgress.

So, I guess that I am unable to immediately refresh the grid - but is there some other way to do this - like forcing a page submit on the final update?

It seems a trifle ironic that we can show the progress of a long running task, but not show the result of that task being completed? Surely, I must be missing something here?

BTW, the problem is easily reproduced using your sample code for "Server Side Task - Advanced 1" - simply add a label control to this page, then add a line of code to the server side ProgressBar1_RunTask method, which sets the label text. Whether you use a label, or an EO.Web.Grid control, the result is the same - except that I can populate the label clients side, but not the grid.
eo_support
Posted: Tuesday, May 8, 2012 7:30:44 AM
Rank: Administration
Groups: Administration

Joined: 5/27/2007
Posts: 24,195
Hi,

Please take a look of "Server Side Task - Advanced 2" sample. Basically you need to return the client side first after the ProgressBar is done, then initiate a second round trip (this round trip would be normal) to the server to do whatever additional update you need to do.

Thanks


You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.