1. 接口为ExecuteStoredProcedure(string storedProcedureName, params ObjectParameter[] parameters)
 2. 参数为存储过程名字， 及输入值。 
 3. 思路：创建连接（连接中指定了是Sql/MySql/ODBC等等）； 创建通用DbCommand；更改Text以及Type；添加通用Parameter（DBParameter是抽象类，因此需要判断connection类型）；判断连接状态（需Open）； 调用Execute方法； 关闭连接。 
 4. 
 实现如下: 

// In V1 of the EF, the context connection is always an EntityConnection                 EntityConnection entityConnection = (EntityConnection)protocolDB.Connection;                   // The EntityConnection exposes the underlying store connection                 DbConnection storeConnection = entityConnection.StoreConnection;                 DbCommand command = storeConnection.CreateCommand();                 command.CommandText = storedProcedureName;                 command.CommandType = CommandType.StoredProcedure;                   if (storeConnection is SqlConnection)                 {                     foreach (ObjectParameter p in parameters)                     {                         command.Parameters.Add(new SqlParameter { ParameterName = p.Name, Value = p.Value });                     }                 }                 else if (storeConnection is MySqlConnection)                 {                     foreach (ObjectParameter p in parameters)                     {                         command.Parameters.Add(new MySqlParameter { ParameterName = p.Name, Value = p.Value });                     }                 }                 else                 {                     return enProtocolDBReturnCodes.OPERATION_FAILED;                 }                   bool openingConnection = command.Connection.State == ConnectionState.Closed;                 if (openingConnection)                 {                     command.Connection.Open();                 }                   command.ExecuteNonQuery();                   if (openingConnection && command.Connection.State == ConnectionState.Open)                 {                      command.Connection.Close();                 }