How to prevent SelectedIndexChanged event when datasource is bound?
You may use Tag property of combobox. It can be empty or 0 integer value when it’s empty or have not fulfilled yet. You have to set combobox’s Tag as count of it’s items after bounding. In SelectedValueChanged event if the Tag property is null or 0 you have to return from void.
How do you stop a combobox SelectedIndexChanged event from firing when the form loads?
You can simply unbind the SelectedIndexChanged event, call your fill function and bind the SelectedIndexChanged event again.
Is the default event of combobox control?
By default, DropDownStyle property of a Combobox is DropDown. In this case user can enter values to combobox. When you change the DropDownStyle property to DropDownList, the Combobox will become read only and user can not enter values to combobox.
What is SelectedIndexChanged event?
The SelectedIndexChanged event occurs when the SelectedIndex has just changed. The SelectedIndexChanged event does not fire unless the AutoPostBack property is True . The SelectedIndexChanged event handler receives two arguments: The RadDropDownList that is loading items.
What is the use of SelectedIndexChanged in asp net?
The SelectedIndexChanged event is raised when the selection from the list control changes between posts to the server. A list control must persist some values between posts to the server for this event to work correctly.
What is the default event for ListBox control?
The example uses the SelectedIndexChanged event to determine when the selected item in the ListBox is changed. The example code then reads the text of the item using the SelectedItem property and calls the FindString method on a different ListBox using the text returned by SelectedItem in the first ListBox.
What is SelectedIndexChanged?
What is the difference between combo box and list box?
The List box displays all the items at once in a text area, whereas the combo box displays only one item at a time. The rest of the items will be in a dropdown list for a combo box which can be viewed after clicking on it.