How to use ComboBox and populate it programmatically in c# | Populating a ComboBox using C#

C# ComboBox Control The ComboBox control provides combined functionality of a text box and a listbox in a single control. Only one list item is displayed at one time in a ComboBox and rest of the available items are loaded in a drop down list.

Creating a ComboBox We can create a ComboBox control using a Forms designer at design-time or using the ComboBox class in C# code at run-time. To create a ComboBox control at design-time, you simply drag and drop a ComboBox control from Toolbox to a Form in Visual Studio. After you drag and drop a ComboBox on a Form

How to Add Items in ComboBox in C#? In Windows forms, ComboBox provides two different features in a single control, it means ComboBox works as both TextBox and ListBox. In ComboBox, only one item is displayed at a time and the rest of the items are present in the drop-down menu. You are allowed to a list or collection of elements in your ComboBox by using Items Property. You can set this property using two different methods:

1. Design-Time: It is the easiest method to add the items in the ComboBox control using the following steps
2. Run-Time: It is a little bit trickier than the above method. In this method, you can add the list of elements in the ComboBox programmatically ... https://www.youtube.com/watch?v=mcI3WW7fWe8