C#: How to convert List to each individual array












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$begingroup$


I have data that is stored in an array of class. Assume the following class:



class Employee
{
public int employeeId;
public string employeeName;
}


So I have List<Employee> employeeData and I'm going to do bulk insert to database using Oracle. OracleCommand requires each class member to be specified in the command parameter, meaning I have to create



List<int> employeeId = new List<int>();
List<string> employeeName = new List<string>();


Then I will need to loop from my List<Employee> class and assign to each individual list.



foreach (Employee e in employeeData)
{
employeeId.Add(e.employeeId);
employeeName.Add(e.employeeName);
}


And then I will bind the parameters and invoke the insert command:



OracleParameter opEmpId = new OracleParameter();
opEmpId.OracleDbType = OracleDbType.Int32;
opEmpId.Value = employeeId;

OracleParameter opEmpName = new OracleParameter();
opEmpName.OracleDbType = OracleDbType.Varchar2;
opEmpName.Value = employeeName;

// create command and set properties
OracleCommand cmd = connection.CreateCommand();
cmd.CommandText = "INSERT INTO EMPLOYEE (EMPLOYEE_ID, EMPLOYEE_NAME) VALUES (:1, :2)";
cmd.ArrayBindCount = employeeId.Count;
cmd.Parameters.Add(employeeId);
cmd.Parameters.Add(employeeName);
cmd.ExecuteNonQuery();


My question is that, if I have many class members, how to do this efficiently, in the transformation from class Employee to each individual list?









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    0












    $begingroup$


    I have data that is stored in an array of class. Assume the following class:



    class Employee
    {
    public int employeeId;
    public string employeeName;
    }


    So I have List<Employee> employeeData and I'm going to do bulk insert to database using Oracle. OracleCommand requires each class member to be specified in the command parameter, meaning I have to create



    List<int> employeeId = new List<int>();
    List<string> employeeName = new List<string>();


    Then I will need to loop from my List<Employee> class and assign to each individual list.



    foreach (Employee e in employeeData)
    {
    employeeId.Add(e.employeeId);
    employeeName.Add(e.employeeName);
    }


    And then I will bind the parameters and invoke the insert command:



    OracleParameter opEmpId = new OracleParameter();
    opEmpId.OracleDbType = OracleDbType.Int32;
    opEmpId.Value = employeeId;

    OracleParameter opEmpName = new OracleParameter();
    opEmpName.OracleDbType = OracleDbType.Varchar2;
    opEmpName.Value = employeeName;

    // create command and set properties
    OracleCommand cmd = connection.CreateCommand();
    cmd.CommandText = "INSERT INTO EMPLOYEE (EMPLOYEE_ID, EMPLOYEE_NAME) VALUES (:1, :2)";
    cmd.ArrayBindCount = employeeId.Count;
    cmd.Parameters.Add(employeeId);
    cmd.Parameters.Add(employeeName);
    cmd.ExecuteNonQuery();


    My question is that, if I have many class members, how to do this efficiently, in the transformation from class Employee to each individual list?









    share









    $endgroup$















      0












      0








      0





      $begingroup$


      I have data that is stored in an array of class. Assume the following class:



      class Employee
      {
      public int employeeId;
      public string employeeName;
      }


      So I have List<Employee> employeeData and I'm going to do bulk insert to database using Oracle. OracleCommand requires each class member to be specified in the command parameter, meaning I have to create



      List<int> employeeId = new List<int>();
      List<string> employeeName = new List<string>();


      Then I will need to loop from my List<Employee> class and assign to each individual list.



      foreach (Employee e in employeeData)
      {
      employeeId.Add(e.employeeId);
      employeeName.Add(e.employeeName);
      }


      And then I will bind the parameters and invoke the insert command:



      OracleParameter opEmpId = new OracleParameter();
      opEmpId.OracleDbType = OracleDbType.Int32;
      opEmpId.Value = employeeId;

      OracleParameter opEmpName = new OracleParameter();
      opEmpName.OracleDbType = OracleDbType.Varchar2;
      opEmpName.Value = employeeName;

      // create command and set properties
      OracleCommand cmd = connection.CreateCommand();
      cmd.CommandText = "INSERT INTO EMPLOYEE (EMPLOYEE_ID, EMPLOYEE_NAME) VALUES (:1, :2)";
      cmd.ArrayBindCount = employeeId.Count;
      cmd.Parameters.Add(employeeId);
      cmd.Parameters.Add(employeeName);
      cmd.ExecuteNonQuery();


      My question is that, if I have many class members, how to do this efficiently, in the transformation from class Employee to each individual list?









      share









      $endgroup$




      I have data that is stored in an array of class. Assume the following class:



      class Employee
      {
      public int employeeId;
      public string employeeName;
      }


      So I have List<Employee> employeeData and I'm going to do bulk insert to database using Oracle. OracleCommand requires each class member to be specified in the command parameter, meaning I have to create



      List<int> employeeId = new List<int>();
      List<string> employeeName = new List<string>();


      Then I will need to loop from my List<Employee> class and assign to each individual list.



      foreach (Employee e in employeeData)
      {
      employeeId.Add(e.employeeId);
      employeeName.Add(e.employeeName);
      }


      And then I will bind the parameters and invoke the insert command:



      OracleParameter opEmpId = new OracleParameter();
      opEmpId.OracleDbType = OracleDbType.Int32;
      opEmpId.Value = employeeId;

      OracleParameter opEmpName = new OracleParameter();
      opEmpName.OracleDbType = OracleDbType.Varchar2;
      opEmpName.Value = employeeName;

      // create command and set properties
      OracleCommand cmd = connection.CreateCommand();
      cmd.CommandText = "INSERT INTO EMPLOYEE (EMPLOYEE_ID, EMPLOYEE_NAME) VALUES (:1, :2)";
      cmd.ArrayBindCount = employeeId.Count;
      cmd.Parameters.Add(employeeId);
      cmd.Parameters.Add(employeeName);
      cmd.ExecuteNonQuery();


      My question is that, if I have many class members, how to do this efficiently, in the transformation from class Employee to each individual list?







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