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page.setfocus(listbox.selecteditem) is not setting the focus if index > 820

Posted By:      Posted Date: September 13, 2010    Points: 0   Category :ASP.Net
 
Hi All, Does any one know the reason Why I am unable to setfocus to my list box if the index > 820 My list box contains 2000 items and the index is not  able to set the focus if the index > 820  


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