Asp.net DropDownList Vs Ajax ComboBox

when I populate a dropdownlist and combobox with 5000 records and autopostbakc=true, the ddl works very fast but the combobox's performance is very bad. is there any way speed up combobox (even loading items and selectindexchanged event?

thanks

ayha
LVL 7
ayha1999Asked:
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mayank_joshiCommented:
Are you using Data Reader or Data Apapter to fetch the records?
Data Reader is faster than Adapter in most scenarios.
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ayha1999Author Commented:
I changed it datareader but no change in the speed. Dropdownlist loads faster than combo. is there any limit in combo for number of items to be inserted?
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mayank_joshiCommented:
no there is no such limit.
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