I have RadComboBox in my page, i want bind the database table with my RadComboBox .. But Here i don't want to bind it in page_Load, Which event i need to have for binding RadComboBox..
As far as I know, pageLoad is the good option to bind the RadCombobox. In pageLoad you can check for the !IsPostBack condition and bind.
Here is a help article describes the same. Binding to DataTable, DataSet, or DataView.