//得到原始dt
DataTable dt =此处代码略去，生成一个带图片列的dt;

            DataSet ds = new DataSet();
            ds.Tables.Add(dt);
            byte[] buf = Encoding.Default.GetBytes(ds.GetXml());


            string xml = Encoding.Default.GetString(buf, 0, buf.Length);
            System.IO.StringReader sr = new System.IO.StringReader(xml);
            DataSet dsb = new DataSet();
            DataTable dtb = new DataTable();
            dsb.ReadXml(sr);
            dtb = dsb.Tables[0];

//将dtb绑定到一个带图片列的datagridview就会报错