problem on firing combobox selectedIndexedchanged event

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Hi friends
I am developing windows application using c#. I have a two comboboxes 1.combox1 for country, 2.combobox2 for state
In the page_load event of form data(country name) has been boundto combobox(combobox1) from sql server. then i add another data(state name) to comobobox(combobox2)from sql based on the first combobox selected value by using combobox1_selectedindexchanged event.but the problem is combobox1_selectedindexchanged event occurs at the page_load event itself. but what i need is combobox2 value is added after selecting the value from first combobox1. what would be problem on my process.

Posted 8-Aug-12 3:39am

baskaran chellasamy

Updated 8-Aug-12 3:57am

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bbirajdar 8-Aug-12 11:12am

Repost of http://www.codeproject.com/Questions/436701/problem-in-country-state-city-binding-to-combobox

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Philip Stuyck · Answer 1 · 2012-08-08T03:46:00

Solution 1

It is normal behaviour for the combobox selectedindex changed event to occur this way. Chances are the selected index is -1 and you just have to check for that value and do nothing in that case or clear the second combo because nothing is selected in the first combo.

Posted 8-Aug-12 3:46am

Philip Stuyck

Rajesh Buddaraju · Answer 2 · 2012-08-08T03:55:00

Solution 2

To avoid this kind of problems you can use SelectionChangeCommitted event.

Posted 8-Aug-12 3:55am

Rajesh Buddaraju

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baskaran chellasamy 8-Aug-12 10:06am

This event also not working.please give me any sample code in window application for binding country,state,city based on the combobox selected value.