SQL OUTPUT Saklı Yordamlar ExecuteReader ile çalışmaz

Question

SQL 2008 ve C# 4.0'da Stored prosedürü kullanıldığında, OUTPUT bilgilerini alıp Select deyiminden dönüş bilgisi alamıyorum. "Nesne başvurusu, bir nesnenin örneğine ayarlanmadı" almaya devam ediyorum. ExecuteScalar() yaptığımda, satırları alırım, ancak verileri değil. Orada birkaç örnek buldum ve yaptığım şeye benziyorlar, bence önümde basit bir şey kaçırıyorum. Teşekkürler. Eğer çıkış parametreleri işlemek önce

Saklı yordam

USE [PhoneDb] 
GO 
/****** Object: StoredProcedure [dbo].[TestPagingProcedure] Script Date: 06/16/2011 08:39:03 ******/ 
SET ANSI_NULLS ON 
GO 
SET QUOTED_IDENTIFIER ON 
GO 

ALTER PROCEDURE [dbo].[TestPagingProcedure] 
    -- Add the parameters for the stored procedure here 
    @startRowIndex int, 
    @maximumRows int, 
    @totalRows int OUTPUT 


AS 
BEGIN 
    -- SET NOCOUNT ON added to prevent extra result sets from 
    -- interfering with SELECT statements. 
    SET NOCOUNT ON; 

DECLARE @first_id UNIQUEIDENTIFIER 
DECLARE @startRow int 

SET @startRowIndex = (@startRowIndex - 1) * @maximumRows 

IF @startRowIndex = 0 
SET @startRowIndex = 1 

SET ROWCOUNT @startRowIndex 

SELECT @first_id = ExtensionGUID FROM ExtItem ORDER BY ExtensionGUID 

PRINT @first_id 

SET ROWCOUNT @maximumRows 

SELECT 
ExtensionGUID, AesExt, AesHashPassword, ToNumber, AgentExt, Name, JpgImageName, BigImageName, WbmpImageName 
FROM ExtItem WHERE 
ExtensionGUID >= @first_id 
ORDER BY ExtensionGUID 

SET ROWCOUNT 0 

-- GEt the total rows 

SELECT @totalRows = COUNT(ExtensionGUID) FROM ExtItem 

END 

C# Kod

public bool GetPagedResults(string startRowIndex, string maxRows, ref double totalRowsReturned) 
    { 
     bool IsSuccess = false; 
     string clearPassword = ""; 
     Log.WriteLine("GetExtList : ENTERED GETEXTITEM: ", Log.DEBUG_LEVEL.VERBOSE); 
     SqlConnection MyConnection = null; 
     EnDecrypt hasher = null; 

     try 
     { 
      if (SQLLookup.DatabaseString == "") 
      { 
       Log.WriteLine("GetPagedResults : SQLLookup.DatabaseString is empty:", Log.DEBUG_LEVEL.VERBOSE); 
       SQLLookup.SQLFinder(); 
       Log.WriteLine("GetPagedResults : SQL FINDER RUN: SQLLookup.DatabaseString:'" + SQLLookup.DatabaseString + "'", Log.DEBUG_LEVEL.VERBOSE); 
      } 

      Log.WriteLine("GetPagedResults: SQL Server '" + SQLLookup.DatabaseString + "'", Log.DEBUG_LEVEL.VERBOSE); 

      _extItemList.Clear(); // Keep new records from just being appended to existing list. 

      hasher = new EnDecrypt("SetMyKey", "SaltGenerator"); 

      // Create a Connection to SQL Server 
      MyConnection = new SqlConnection(@"Data Source= " + SQLLookup.DatabaseString + @"; Initial Catalog=PhoneDb;Integrated Security=True"); 

      SqlCommand myCommand = new SqlCommand("TestPagingProcedure", MyConnection); 
      myCommand.CommandType = CommandType.StoredProcedure; 

      /* ASSIGN PARAMETERS */ 
      myCommand.Parameters.Add(new SqlParameter("@startRowIndex", startRowIndex)); 
      myCommand.Parameters.Add(new SqlParameter("@maximumRows", maxRows)); 
      myCommand.Parameters.Add("@totalRows", SqlDbType.Int, 4); 
      myCommand.Parameters["@totalRows"].Direction = ParameterDirection.Output; 


      Log.WriteLine("GetPagedResults:3 After try ", Log.DEBUG_LEVEL.VERBOSE); 
      Log.WriteLine("GetPagedResults:3 startRowIndex = " + startRowIndex + " maxRows = " + maxRows, Log.DEBUG_LEVEL.VERBOSE); 
      MyConnection.Open(); 
      SqlDataReader Reader = myCommand.ExecuteReader(); 

      Log.WriteLine("GetPagedResults BEFORE WHILE LOOP", Log.DEBUG_LEVEL.VERBOSE); 
      while (Reader.Read()) 
      { 
       /* BUILD EXT ITEM*/ 
       ExtItem extItem = new ExtItem(); 
       if (Reader.IsDBNull(0) || Reader.GetGuid(0) == Guid.Empty) 
        extItem.ExtensionGUID = Guid.Empty; 
       else 
        extItem.ExtensionGUID = Reader.GetGuid(0); 

       if (Reader.IsDBNull(1) || Reader.GetString(1) == "") 
        extItem.AesExt = "No value"; 
       else 
        extItem.AesExt = Reader.GetString(1); 


       /* ADD ITEM TO LIST */ 
       AddItem(extItem); 

       //Log.WriteLine("GetExtList extItem: " + extItem.ToString(), Log.DEBUG_LEVEL.VERBOSE); 
      } 

      // get the total rows 
      Log.WriteLine("GetPagedResults: New Total number of pages: " + (int)myCommand.Parameters[2].Value, Log.DEBUG_LEVEL.TERSE); 
      // totalRowsReturned = myCommand.Parameters["@totalRows"]; 

      IsSuccess = true; 

      MyConnection.Close(); 
      Log.WriteLine("GetPagedResults: RETURNING:", Log.DEBUG_LEVEL.VERBOSE); 
     } 

     catch (Exception ex) 
     { 
      Log.WriteLine("GetPagedResults: Unable to retrieve Extension list. Caught Exception " + ex.Message, 
       Log.DEBUG_LEVEL.TERSE); 
      IsSuccess = false; 
     } 

     MyConnection.Close(); 

     return IsSuccess; 
    } 

Answer 1

http://msdn.microsoft.com/en-us/library/ms971497 göre, DataReader kapatılması gerekiyor.