[Serializable]
public class DtoColumn : ICloneable2.实现接口方法Clone： 


public object Clone()
{
    using (MemoryStream ms = new MemoryStream(capacity))
    {
      object CloneObject;
      BinaryFormatter bf = new BinaryFormatter(null, new StreamingContext(StreamingContextStates.Clone));
      bf.Serialize(ms, this);
      ms.Seek(0, SeekOrigin.Begin);      
      CloneObject = bf.Deserialize(ms);       
      ms.Close();
      return CloneObject;
    }
}

private List < dto.DtoColumn > DeepCloneData(List < dto.DtoColumn > rawdata) {
  return rawdata.Select(x = >x.Clone()).Cast < dto.DtoColumn > ().ToList()
}

this.dataGridView1.DoThreadPoolWork(() = >
{
  this.dataGridView1.DataSource = DeepCloneData(CloneInitialColumnData);
  this.dataGridView1.Refresh();
});