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

My issue was that my dataSource was of Type List < string > so I just test for that

public static void AddDataSource(this ComboBox comboBox, T dataSource, string item)
{
    comboBox.DataSource = dataSource;

    if (!typeof(T).Equals(typeof(List))) // <-- Here
    {
        comboBox.DisplayMember = "Name";
        comboBox.ValueMember = "Value";
    }

    comboBox.SelectedIndex = -1;
    comboBox.Text = $"Select a {item}";
}