Mysql 索引超出范围。必须为非负数且小于集合的大小

我有下面的代码来获取对象中的表数据，但我得到了错误，我不知道我错在哪里

    public List<ModelGetEmployeeList> GetEmployeeList()
            {

               List<ModelGetEmployeeList> empList = new List<ModelGetEmployeeList>();
                DataTable dt = new DataTable();

                string q = "select uid,fname,lname from nworksuser;";
                MySqlCommand cmd = new MySqlCommand(q,conn);
                MySqlDataAdapter adapter = new MySqlDataAdapter(cmd); ;
                conn.Open();
                adapter.Fill(dt);
                conn.Close();
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    foreach (DataRow row in dt.Rows)
                    {
                        //Here I am getting following error
                        // Index was out of range. Must be non-negative and less than the size of the collection.
                        empList[i].uid = row["uid"].ToString();
                        empList[i].fname = row["fname"].ToString();
                        empList[i].lname = row["lname"].ToString();
                    }
                }
                return empList;
            }

---

因为您的

empList

为空

将

ModelGetEmployeeList

添加到列表中的正确方法是：

ModelGetEmployeeList employee;

foreach (DataRow row in dt.Rows)
{
    employee = new ModelGetEmployeeList();
    employee.uid = row["uid"].ToString();
    employee.fname = row["fname"].ToString();
    employee.lname = row["lname"].ToString();

    empList.Add(employee);
}

---

因为您的

empList

为空

将

ModelGetEmployeeList

添加到列表中的正确方法是：

ModelGetEmployeeList employee;

foreach (DataRow row in dt.Rows)
{
    employee = new ModelGetEmployeeList();
    employee.uid = row["uid"].ToString();
    employee.fname = row["fname"].ToString();
    employee.lname = row["lname"].ToString();

    empList.Add(employee);
}

---

无问题@dipakakhade，无需在数据适配器处理时打开和关闭连接无问题@dipakakhade，无需在数据适配器处理时打开和关闭连接