StoredProcedure不正確的參數數量（C＃）

Question

我有我創建的StoredProcedure;

CREATE DEFINER=`mysqladmin`@`%` PROCEDURE `Alerts_GetAlerts`(IN managerID INT) 
BEGIN 
    SELECT ID, Type, EmpID, ManagerID, HolID 
    FROM Alerts 
    WHERE ManagerID = managerID; 
END$$ 

然後我試着從我的C＃代碼中調用這個;

using (var con = new MySqlConnection(MySQLConStr)) 
{ 
    con.Open(); 
    using (MySqlCommand cmd = new MySqlCommand("Alerts_GetAlerts", con)) 
    { 
     cmd.Parameters.AddWithValue("@managerID", managerID); 
     using (var dataReader = cmd.ExecuteReader()) 
     { 
      while (dataReader.Read()) 
      { 
       var alert = new AlertsModel 
       { 
        ID = Convert.ToInt32(dataReader[0]), 
        Type = Convert.ToInt32(dataReader[1]), 
        ManagerID = Convert.ToInt32(dataReader[2]), 
        EmployeeID = Convert.ToInt32(dataReader[3]), 
        HolidayID = Convert.ToInt32(dataReader[4]), 
       }; 
       AllAlerts.Add(alert); 
      } 
     } 
    } 
    return AllAlerts; 
} 

但是我不斷獲得，Incorrect number of arguments for PROCEDURE sdcdatabase.Alerts_GetAlerts; expected 1, got 0即使對我來說，似乎我傳遞的經理ID參數通過;

cmd.Parameters.AddWithValue("@managerID", managerID);

我要去哪裏錯了？

Answer 1

試試這個代碼

using (var con = new MySqlConnection(MySQLConStr)) 
{ 
    con.Open(); 
    using (MySqlCommand cmd = new MySqlCommand("Alerts_GetAlerts(@managerID)", con)) 
    { 
     cmd.Parameters.AddWithValue("@managerID", managerID); 
     using (var dataReader = cmd.ExecuteReader()) 
     { 
      while (dataReader.Read()) 
      { 
       var alert = new AlertsModel 
       { 
        ID = Convert.ToInt32(dataReader[0]), 
        Type = Convert.ToInt32(dataReader[1]), 
        ManagerID = Convert.ToInt32(dataReader[2]), 
        EmployeeID = Convert.ToInt32(dataReader[3]), 
        HolidayID = Convert.ToInt32(dataReader[4]), 
       }; 
       AllAlerts.Add(alert); 
      } 
     } 
    } 
    return AllAlerts; 
}