C# 批量更新数据库

 public bool MultiUpdateData(System.Data.DataTable dt,string Columns, string tableName) { string sql = string.Format("select {0} from {1} where flg=0", Columns, tableName); try { conn.Open(); SqlDataAdapter myDataAdapter = new SqlDataAdapter(); myDataAdapter.SelectCommand = new SqlCommand(sql, conn); SqlCommandBuilder custCB = new SqlCommandBuilder(myDataAdapter); custCB.ConflictOption = ConflictOption.OverwriteChanges; custCB.SetAllValues = true; foreach (DataRow dr in dt.Rows) { if (dr.RowState == DataRowState.Unchanged) dr.SetModified(); } myDataAdapter.Update(dt); //dt.AcceptChanges();
 myDataAdapter.Dispose(); } finally { conn.Close(); } return true; }
//new DBHelpers().MultiUpdateData(temtable, "*", "infor");