Conditional Combobox filling

Hi All,
I am newby in ASPX. I am developing a web application by using ASPX (VB.NET). I am using 2 comboboxes in my page and by the selected criteia second combobox must be filled. But when I do this, since I am cleaning all the contents of the first combobox when page is loaded, all my info is going (first combobox has autopostback=true option).
It was simple in windows application but I am not familiar with web applications.
Thanks in advance
boranicoAsked:
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YZlatCommented:
don't use autoPostBack on your first dropdown. Instead put your code into On Selected Index Changed
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YZlatCommented:
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