将DataTable转换为我的列表<t>

Question

            cmd.CommandText = sql;
            cmd.ExecuteNonQuery();
            SqliteDataReader rdr = cmd.ExecuteReader();
            dt.Load(rdr);
            return dt;

DataTable tb = new DataTable();到List<Details> objList = new List<Details>。

            foreach (var obj in dt)
            {
                var item = new Details();
                item.ID = obj.ID;
                item.Dosage = obj.Dosage;
                item.Drug = obj.Drug;
                item.Patient = obj.Patient;
                item.Date = obj.Date;

                results.Add(item);
            }

这个想法在这里但是在forceach中的 dt 中存在错误（在dt中的var obj）

Answer 1

你必须

1. 执行读者
2. 阅读游标
3. 创建班级实例
4. 将这些实例收集到List<T>
中

像这样的东西

   // List which will be used to collect records from the query
   List<MyClass> list = new List<MyClass>();

   ...
   cmd.CommandText = sql;

   //DONE: execute reader; wrap IDisposable into using
   using (SqliteDataReader rdr = cmd.ExecuteReader()) {
     //DONE: read each cursor's record
     while (rdr.Read()) {
       //DONE: Turn each record into MyClass instance
       MyClass item = new MyClass();

       //TODO: Assign properties
       item.Property1 = Convert.ToString(rdr[0]);
       item.Property2 = Convert.ToInt32(rdr[1]); 
       ...  

       //DONE: Finally, collect all the intances created into the list 
       list.Add(item);
     }      
   } 
   ...