I am using a radgridview which is having more than 1200 records in it and it is grouped by two columns, so that it will have just 2 records(in collapsed state). we have an external button to expand all rows, we are calling the method gridview1.ExpandAllGroups() in Click event of that button. All the 1200 records are shown in a single page because of grouping.
So when we click expand button, the browser is getting hanged and after some times the browser restarts.
Is there a solution for this?