or
private void RadFormTestGridArrayList_Load(object sender, EventArgs e)
{
bindingList = new BindingList<
MyObject
>();
bindingList.Add(new MyObject(1, "Object one"));
bindingList.Add(new MyObject(2, "Object two"));
bindingList.Add(new MyObject(3, "Object three"));
radGridView1.DataSource = bindingList;
radGridView1.Rows[0].ErrorText = "This row has an error";
radGridView1.Rows[1].ErrorText = "This row has an error";
}