How to append two field values in combobox display member in C#

Question

In my table, I have a field of firstname and lastname, now what I want is to set firstname and lastname as displaym

Answer 1

Your query should be like this in GetEmployees() function.

"SELECT id,(lastname + ' ' + first_name) AS NAME FROM TABLE"

cmbEmployees.DataSource = GetEmployees();
cmbEmployees.DisplayMember = "NAME"; 
cmbEmployees.ValueMember = "id";