C#顯示XML的內容

Question

大概如下:
private void GetConfigurationContext(string filename)
        {
            FileInfo fileInfo = new FileInfo(filename);
            DataSet ds = new DataSet();
            ds.ReadXml(filename);
            
            DataView dv = ds.Tables[1].DefaultView;            
           if (ds.Tables[1].Columns.IndexOf("lockItem")!=-1)
            {
            dv.RowFilter = "lockItem='false'";
            }            dgvContext.DataSource = dv;
            
        }
把其放到DataView中，要怎麼做才可以衹顯示某些列呢？