I tried to reproduce the problem in my local test by creating a simple page containing WebGrid. The grid is bind to a OrderDetails table of Northwind database which has 5 columns (totally, there are 6 columns including the row checker column) and 2155 rows.

When user clicks the “Select All” checkbox, it takes about 2 seconds to check the entire 2155 checkboxes in IE 9 browser. The sample page is enclosed as attachment.

Could you please provide more information regarding the reported problem?

• How many columns and rows rendered in the grid?
• Should you have different scenario about how the performance problem persist on your end, please give us the step by step guide that we can use to observe the problematic behavior.

Edited on March 28, 2012 4:55 AM
Reason: Attach sample file.

Can you post me attachment with code sample from above mentioned example.

I'm sorry for having forgotten to attach the sample file. Please find it on my previous post and let us know if you have different result.

I have been able to find following problem on your rowchecker live demo.

1)      Live demo:

 http://live.intersoftpt.com/cs/WebGrid/RowCheckerColumn.aspx?path=%2fWebGrid%2fGrid+Layout+Mode&noframe=1

2)pick one row with rowchecker

3)Press „Get Checked Rows in server“ button

4)Now use rowchecker button for selecting all rows

Now rowchecker will work sluggish.

As far as i tested it, there is some problem with GetCheckedRows() function under master page.

I will discuss what you have found with the WebGrid development team. For your information, I also found that when using XHTML 1.0 Transitional doctype, the reported row checker performance is better than the HTML 4.0 Transitional doctype.

Edited on April 1, 2012 2:28 AM
Reason: Inform work item number

This problem has been forwarded to WebGrid development team and submitted under work item #1166. I will keep you informed with any news I heard from the team regarding work item #1166