Cannot bind to the new display member in ComboBox

Question

I have a class which give me this error

public class Item 
{
    public string Name;
    public int Id

    public Item(string name, int id) 
    {
        N         


        

Answer 1

You can either check datasource null or bind datasource after setting value member and display member

        cmbDepartment.DisplayMember = "Dep_Name";
        cmbDepartment.ValueMember = "Dep_ID";
        cmbDepartment.DataSource = model;