How to check whether the item in the combo box is selected or not in C#?

Question

I have a combo box in which I have to display the dates from a database. The user has to select a date from the combo box to proceed further, but I don\'t know how to make the u

Answer 1

if (string.IsNullOrEmpty(ComboBox.SelectedText)) 
{
 MessageBox.Show("Select a date");
}