asp listbox add item
listBox.appendChild(option) return false script>. ASP.Net. This question does not have replies marked as Answer. You can use the ASP.Net ListBox web server control to get the user input as multiple items selected under a specific group.Drag the control ListBox and a Button on the form and select ListBox control property items to add the items in list. Add one ListBox named ListBox1 which will be used as a container to display the inputted schools in TextBox1. Add also two Buttons named Button1 labeled "Add" for adding items in the ComboBox and Button2 labeled "Remove" for removing the selected item in the ListBox. Working with ListBox control in ASP.NET.If true, the statically added item (added from .aspx page) is maintained when adding items dynamically (from code behind file) or items are cleared. Remove your If Not IsPostBack() Then check in your button click event. The IsPostBack() is typically only used for the PageLoad event.
In ASP.NET every ASP.NET server control is backed by a correspondingly named protected field.