DataSet 反向更新数据库的数据增加

SqlConnection conn = new SqlConnection();

conn.ConnectionString = "data source=.;initial catalog=demo;user id=sa;password=sa";

SqlCommand cmd = new SqlCommand();

cmd.CommandText = "select * from wz_ksdm";

cmd.Connection = conn;

SqlDataAdapter da = new SqlDataAdapter();

da.SelectCommand = cmd;

DataSet ds = new DataSet();

da.Fill(ds, "wz_ksdm");

DataSet ds1 = new DataSet();

ds1.ReadXml(Application.StartupPath.ToString() + "http://www.cnblogs.com/../" + "WZKSDM.XML");

////ds.Tables["wz_da"].ReadXml();

SqlCommand insertcmd = new SqlCommand();

//insertcmd.CommandText = "insert into wz_bz(id,cyyfl,cyy) values(@id,@cyyfl,@cyy)";

insertcmd.CommandText = "insert into wz_ksdm(ksdm,ksmc,srm1,srm2,srm3) values(@ksdm,@ksmc,@srm1,@srm2,@srm3)";

insertcmd.Parameters.Add("@ksdm", SqlDbType.VarChar,10,"ksdm");

insertcmd.Parameters.Add("@ksmc", SqlDbType.VarChar,30, "ksmc");

insertcmd.Parameters.Add("@srm1", SqlDbType.VarChar,6, "srm1");

insertcmd.Parameters.Add("@srm2", SqlDbType.VarChar,6, "srm2");

insertcmd.Parameters.Add("@srm3", SqlDbType.VarChar,6,"srm3");

da.InsertCommand = insertcmd;

insertcmd.Connection = conn;

MessageBox.Show(da.Update(ds1.Tables[0]).ToString());