Add "---Select" as first item in Combobox in windows form?

Question

var query = (from c in db.tblGroups
             select new { c.GroupId, c.Name })
            .ToList();

GroupcomboBox.DataSource = query;
GroupcomboBox.DisplayMember = "Name";
GroupcomboBox.ValueMember = "GroupId";

I am Binding my Combobox as Above, I need to add ---Select--- as first combobox item. Please suggest me with Code.

Answer 1

You could add it manually. Beware of your "Select ----" ValueMember

var query = (from c in db.tblGroups
             select new
             { c.GroupId,
                c.Name
             })
             .ToList();

GroupcomboBox.Items.Add("Select ----");
foreach (var item in query)
{
    GroupcomboBox.Items.Add(item);
}

GroupcomboBox.DisplayMember = "Name";
GroupcomboBox.ValueMember = "GroupId";