i have a sqldatasource with
SelectCommand="SELECT [CowNo],CowNo+' '+CowName [CowName], [MilkingStatus],[Lactation] FROM [CowDetailList] WHERE ([MilkingStatus] = @MilkingStatus) ">
i used it as a datasource for a Dropdown list with CowName as Display Value and CowNo as Value
i want to know the selected Lactation when selected index is changed for Dropdownlist.
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