如何在wpf datagrid中的DataGridTextColumn中动态添加多行

  DataGridTextColumn col = new DataGridTextColumn();
  col.Header = "SMS_Message";
  Binding bind = new Binding();
  bind.Source = (I_Want_To_Bind_New_MSG_All_the_Time);
  col.Binding = bind;

GridView.Columns.Add(col);
  DataGridTextColumn col = new DataGridTextColu