ASP.Net DropDownList Control Example DropDownList Example in ASP.Net C# ASP.NET C# – DropDownList Control Example County State City without db County State City with Database Validate RequiredField Validator Text Match with Items Text Match with Selected Items Add and Insert New Items Clear(), Remove(), RemoveAt() Enable/Disable Visible/Hide Count of Total Itmes Transfer Items to other Dropdown SelectedIndexChanged AutoPostBack Example Add and Remove Items Add New Items from Textbox SelectedItem in DropDownlist