MysqlDataReader（機能）を持つアレイ

Question

つまり、私は example[0][1]を呼び出すことによって、MySQLデータベース用の List<string>[]を返す関数を作っていると私は私が取得するためにwan't列を指定する必要が

...

dbConnect = new DBConnect(); 
List<string>[] userlogin; 
List<MySqlParameter> parameters = new List<MySqlParameter>(); 
parameters.Add(new MySqlParameter("@Username", usernameinput.Text)); 
parameters.Add(new MySqlParameter("@Keya", passwordhashed)); 
dbConnect.Select("SELECT `id`, `Username`, `Key`, `AdminLevel`,`Model` FROM `accounts` WHERE `Username` = @Username AND `Key` = @Keya", parameters, 5, "Username", "AdminLevel", "Key", "id", "Model"); 

私のクラスの取得

dbConnect.Select("SELECT * FROM accounts WHERE Username = @Username AND Key = @Keya", parameters);

すなわち

using System.Collections.Generic; 
using MySql.Data.MySqlClient; 
using System; 

namespace something 
{ 
class DBConnect 
{ 
    private MySqlConnection connection; 
    private string server; 
    private string database; 
    private string uid; 
    private string password; 
    public bool connectionstatus = false; 

    //Constructor 
    public DBConnect() 
    { 
     Initialize(); 
    } 

    //Initialize values 
    private void Initialize() 
    { 
     server = "127.0.0.1"; 
     database = "smth"; 
     uid = "root"; 
     password = "123123"; 
     string connectionString; 
     connectionString = "SERVER=" + server + ";" + "DATABASE=" + 
     database + ";" + "UID=" + uid + ";" + "PASSWORD=" + password + ";"; 

     connection = new MySqlConnection(connectionString); 
     this.OpenConnection(); 
    } 

    //open connection to database 
    public bool OpenConnection() 
    { 
     if (connectionstatus != true) 
     { 
      try 
      { 
       connection.Open(); 
       connectionstatus = true; 
       return true; 
      } 
      catch (MySqlException ex) 
      { 
       //When handling errors, you can your application's response based 
       //on the error number. 
       //The two most common error numbers when connecting are as follows: 
       //0: Cannot connect to server. 
       //1045: Invalid user name and/or password. 
       switch (ex.Number) 
       { 
        case 0: 
         ComponentFactory.Krypton.Toolkit.KryptonMessageBox.Show("Cannot connect to server. Contact administrator"); 
         break; 

        case 1045: 
         ComponentFactory.Krypton.Toolkit.KryptonMessageBox.Show("Invalid username/password, please try again"); 
         break; 
       } 
       return false; 
      } 
     } 
     return true; 
    } 

    //Close connection 
    public bool CloseConnection() 
    { 
     if (connectionstatus == true) 
     { 
      try 
      { 
       connection.Close(); 
       connectionstatus = false; 
       return true; 
      } 
      catch (MySqlException ex) 
      { 
       ComponentFactory.Krypton.Toolkit.KryptonMessageBox.Show(ex.Message); 
       //MessageBox.Show(ex.Message); 
       return false; 
      } 
     } 
     return true; 
    } 
    public List<string>[] Select(string query, List<MySqlParameter> Values, int numofcolumns, params string[] columns) 
    { 
     string[] columns2 = columns; 
     //numofcolumns -= 1; 
     for (int i = 0; i < numofcolumns; i++) 
      columns2[i] = string.Format("`{0,-3}`", columns[i]); 

     string columns3 = string.Join(",", columns2); 

     columns3 = Functions.TrimAllWithInplaceCharArray(columns3); 

     //string query = "SELECT "+ columns3 + " FROM `"+ table + "` WHERE " + whereclause; 

     //Create a list to store the result 
     List<string>[] list = new List<string>[numofcolumns]; 
     for (int i = 0; i < numofcolumns; i++) 
     { 
      list[i] = new List<string>(); 
     } 

     //Open connection 
     if (connectionstatus == true) 
     { 
      //Create Command 
      MySqlCommand cmd = new MySqlCommand(query, connection); 
      foreach (MySqlParameter param in Values) 
      { 
       cmd.Parameters.Add(param); 
      } 
      //Create a data reader and Execute the command 
      MySqlDataReader dataReader = cmd.ExecuteReader(); 

      //Read the data and store them in the list 
      while (dataReader.Read()) 
      { 
       for (int i = 0; i < numofcolumns; i++) 
       { 
        columns[i] = columns[i].Trim(new Char[] { ' ', '`' }); 
        list[i].Add(dataReader[columns[i].ToString()].ToString()); 
       } 
      } 

      //close Data Reader 
      dataReader.Close(); 

      //close Connection 
      //this.CloseConnection(); 

      //return list to be displayed 
      return list; 
     } 
     else 
     { 
      return list; 
     } 
    } 
} 
} 

しかし、私はwan'tちょっと便利な..ですつまり、私はexample[0]["table"] を言って/コールを使用することができますし、私はテーブルを指定する必要はありません...

私は約24時間、またはいくつかのために、いくつかの回避策の後に私の質問を解決してきた...

作業を...

Answer 1

を、使用して、私は私のクラスで作成する必要があり、編集内容を指定してください。機能

//I have already Made the Connection and this is the Function/Method for the Class 
    public Dictionary<string, string[]> Select(string query, List<MySqlParameter> Values) 
    { 

     //Open connection 
     if (connectionstatus == true) 
     { 
      //MySqlDataAdapter adapter = new MySqlDataAdapter(query, connection); 
      MySqlCommand cmd = new MySqlCommand(query, connection); 

      foreach (MySqlParameter param in Values) 
      { 
       cmd.Parameters.Add(param); 
      } 


      //Create a data reader and Execute the command 
      MySqlDataReader dataReader = cmd.ExecuteReader(); 
      Dictionary<string, string[]> data = new Dictionary<string, string[]>(); 

      var table = new DataTable(); 

      do 
      { 
       table.Load(dataReader); 
      } while (!dataReader.IsClosed); 

      var columns = table.Columns.Cast<DataColumn>() 
      .Select(x => x.ColumnName) 
      .ToList(); 

      var totalrownum = table.Rows.Count; 


      string[][] values = new string[columns.Count][]; 

      for (int i = 0; i < columns.Count; i++) 
      { 
       values[i] = new string[totalrownum]; 

      } 
      for (int column = 0; column < columns.Count; column++) 
      { 
       for (int i = 0; i < totalrownum; i++) 
       { 
        values[column][i] = table.Rows[i][column].ToString(); 
       } 

       data.Add(columns[column], values[column]); 
       Console.WriteLine(columns[column]); 
      } 
      //close Data Reader 
      dataReader.Close(); 

      return data; 
     } 
     else 
     { 
      Dictionary<string, string[]> data = new Dictionary<string, string[]>(); 
      return data; 
     } 
    } 

...それは値が簡単に使用することができます実行していたら

  List<MySqlParameter> parametersdata = new List<MySqlParameter>(); 
      parametersdata.Add(new MySqlParameter("@Username", usernameinput.Text)); 
      parametersdata.Add(new MySqlParameter("@Keya", passwordhashed)); 

      Dictionary<string, string[]> usersdata = new Dictionary<string, string[]>(); 
      usersdata = dbConnect.Select("SELECT `id`, `Username`,`AdminLevel`,`Model`,`Level` FROM `accounts` WHERE `Username` = @Username", parametersdata); 

      List<string> someList= new List<string>(); 
      someList.Insert(0,usersdata["Model"][0]);//Model 
      someList.Insert(1,usersdata["Level"][0]);//Level 
      someList.Insert(2,usersdata["AdminLevel"][0]);//Adminlevel-0 here is the row index