Dropdownlisst on selectedindexchange in asp.net

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How can i fill the second dropdownlist with corresponding value of first dropdownlist

Ex. If i select state in first dropdownlist then it should show only the selected state's city in the second dropdownlist.

Posted 28-Aug-11 10:11am

vivek886

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Wonde Tadesse · Accepted Answer · 2011-08-28T11:31:00

Solution 1

Just take a look at this example. Populate Cascading DropDownList based on selection of other dropdown ASP.NET[^]

Posted 28-Aug-11 11:31am

Wonde Tadesse

Abhijit Jana · Accepted Answer · 2011-08-28T16:42:00

Solution 2

This is one of the mist frequent question asked over here. Check this out
http://www.codeproject.com/search.aspx?q=cascading+dropdown&x=0&y=0&sbo=qa&usfc=false[^]

Posted 28-Aug-11 16:42pm

Abhijit Jana

hitech_s · Accepted Answer · 2011-08-28T19:02:00

In ddlstate_selectedindexchanged()
{
//get the cities corresponding to that state
then bind those
}

you should place update panels for those two dropdown list and
put autopostback=true for state dropdown list.

and one more in city table there should be a state id column then only you can get the corresponding cities.