C＃MySql dataGridViewでストアドプロシージャをバインドする方法

Question

私はここにストアドプロシージャを持っていますが、DataGridviewにバインドする方法がわかりません。

ここにMySQLのコード、ストアドプロシージャ：

SELECT local, SUM(free), SUM(busy), SUM(pause) 
FROM (
SELECT local.locations AS local, 
CASE car_stat_loc.id_status WHEN 1 THEN 1 ELSE 0 END AS free, 
CASE car_stat_loc.id_status WHEN 2 THEN 1 ELSE 0 END AS busy, 
CASE car_stat_loc.id_status WHEN 3 THEN 1 ELSE 0 END AS pause 
FROM local, car_stat_loc 
WHERE local.id_loc = car_stat_loc.id_status 
) AS a 
GROUP BY local 
ORDER BY local 

ここではC＃のコード、ストアドプロシージャを呼び出す：私はミスを持っている場合は、固定に助けてください

private void dataGridView3_CellContentClick(object sender, DataGridViewCellEventArgs e) 
{ 
    connect.Open(); 
    MySqlCommand camd = connect.CreateCommand(); 
    camd.CommandText = "my_pr2"; 
    camd.CommandType = CommandType.StoredProcedure; 

    MySqlDataReader rez; 
    rez = camd.ExecuteReader(CommandBehavior.CloseConnection); 
    dataGridView3.DataSource = rez; 
    camd.ExecuteNonQuery(); 
    connect.Close(); 
} 

を、私はこのから新しいです！

Answer 1

が最初に私のSQLヘルパーのための静的クラスを作成してみあなたの接続文字列 すなわちの名前にprivate static readonly string ConnectionString = ConfigurationManager.ConnectionStrings["VoteContext"].ConnectionString;変更 "VoteContext" で

using System; 
using System.Configuration; 
using System.Data; 
using MySql.Data.MySqlClient; 

namespace MainVoteWeb.Helpers 
{ 
    public static class MyHelper 
    { 
     private static readonly string ConnectionString = ConfigurationManager.ConnectionStrings["VoteContext"].ConnectionString; 

     public static DataTable MyGetData(MySqlCommand command) 
     { 
      MySqlConnection connection = new MySqlConnection(); 
      MySqlDataAdapter adapter = new MySqlDataAdapter(); 
      DataTable data = new DataTable(); 

      try 
      { 
       connection.ConnectionString = ConnectionString; 
       command.CommandTimeout = 500; 
       command.Connection = connection; 
       adapter.SelectCommand = command; 

       adapter.Fill(data); 
       return data; 
      } 
      catch (Exception e) 
      {   
       return data; 
      } 
      finally 
      { 
       connection.Close(); 
      } 
     } 

     public static int MyExecuteNonQuery(MySqlCommand command) 
     { 
      MySqlConnection connection = new MySqlConnection(); 
      int rowsAffected = 0; 

      try 
      { 
       command.CommandTimeout = 500; 
       connection.ConnectionString = ConnectionString; 
       connection.Open(); 
       command.Connection = connection; 

       rowsAffected = command.ExecuteNonQuery(); 
       return rowsAffected.GetString(); 
      } 
      catch (Exception e) 
      { 
       return 0; 
      } 
      finally 
      { 
       connection.Close(); 
      } 
      return rowsAffected.ToString(); 
     } 


    } 
} 

<connectionStrings> 
<add name="NewContext" connectionString="Server=127.0.0.1;Database=mysqlvotedb;user id=root; password=" providerName="MySql.Data.MySqlClient" /> 
</connectionStrings> 

はあなたのボタン

private void dataGridView3_CellContentClick(object sender, DataGridViewCellEventArgs e) 
{ 
    List<local> localList = new List<local>(); 
    MySqlCommand camd = new MySqlCommand(); 
    camd.CommandText = "my_pr2"; 
    camd.CommandType = CommandType.StoredProcedure; 

    //NOTE: MyExecuteNonQuery is for INSERT UPDATE AND DELETE., MyGetData is for Select/Retrieve 

    //if the stored procedure has parameter 
    /* 
     command.Parameters.AddWithValue("intLocalId", p.localId).Direction = ParameterDirection.Input; 
     command.Parameters.AddWithValue("strLocalName", p.localName).Direction = ParameterDirection.Input;    
    */ 
    try 
    { 
     DataTable dt = MyHelper.MyGetData(camd); 
     foreach (DataRow row in dt.Rows) 
     { 
      local item = new local(); 

      item.localId = Convert.ToInt32(row["localId"]); 
      item.localName = Convert.ToString(row["localName"]); 
      item.localDetails = Convert.ToString(row["localDetails"]); 

      localList .Add(item); 
     } 

    } 

    dataGridView3.DataSource = localList ; 
    dataGridView3.AutogenerateColumns = true; 
    //no need to open and close the connection. the MyHelper did that already 
    //camd.ExecuteNonQuery(); 
    //connect.Close(); 


} 

ADVANTAGEに続いprivate static readonly string ConnectionString = ConfigurationManager.ConnectionStrings["NewContext"].ConnectionString;

として指名する必要があります：あなたは、クラスにかかわらず、任意のMySQLの操作にMyHelperクラスを使用することができます。ストアドプロシージャの名前を指定して実行してください

Answer 2

この

cmd = new MySqlCommand("ur_sp_name", cn); 
      cn.Open(); 
      cmd.CommandType = CommandType.StoredProcedure; 
      DataSet ds = new DataSet(); 
      SqlDataAdapter sda = new SqlDataAdapter(cmd); 
      Fill(ds); 
      dg.DataSource = ds; 
      dg.DataBind(); 
      cn.Close();