I have the following method to populate the my ComboBox:
        public static void BindLookup(ListControl lst, object dataSource, string valueMember, string displayMember) {
            lst.ValueMember = valueMember;
            lst.DisplayMember = displayMember;
            lst.DataSource = dataSource;
        }

The problem is that when i add set the selected value to a value that isn't in the list it gets set to zero as the selected value.

I want to know if there is some default method to check if a value exist in the value list.

Hi Ahmad,

A simple method is to check the SelectedIndex property of the ComboBox after you set the SelectedValue. If the value is not included in the list, the SelectedIndex would be -1. You can also traverse the Items or the data source to check if the value is included in the list.

Regards,
Aland Li

---

Please mark the replies as answers if they help and unmark if they don't. This can be beneficial to other community members reading the thread.