Read SqlDataReader by column name : SqlDataReader « Database ADO.net « Visual C++ .NET

Home
Visual C++ .NET
1.2D
2.Class
3.Collections
4.Data Type
5.Database ADO.net
6.Delegate
7.Development
8.File Directory
9.Function
10.Generics
11.GUI Form
12.Language Basics
13.Network
14.Reflection
15.Security
16.Statement
17.Structure
18.Thread
19.XML
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Visual C++ .NET » Database ADO.net » SqlDataReader 
Read SqlDataReader by column name
 


#include "stdafx.h"


using namespace System;
using namespace System::Data;
using namespace System::Data::SqlClient;
using namespace System::Configuration;

void main(){
    String ^Name = "Doors";
    SqlConnection ^connection = gcnew SqlConnection();
    connection->ConnectionString = "SQLConnection";

    try{
        SqlCommand ^cmd = gcnew SqlCommand();
        cmd->Connection = connection;

        cmd->CommandType = CommandType::Text;
        cmd->CommandText =String::Format("SELECT FirstName, LastName FROM Authors WHERE LastName = '{0}'",Name);

        connection->Open();

        SqlDataReader ^reader = cmd->ExecuteReader();

        while(reader->Read()){
            Console::WriteLine("{0} {1}",reader["FirstName"], reader["LastName"]);
        }
        reader->Close();

        // CREATE PROCEDURE dbo.StoriesWhereLastName(@LastName NVARCHAR(32) = NULL) AS
        //   SELECT StoryID, Headline, Story FROM Stories WHERE  LastName = @LastName
        // RETURN

        cmd->CommandType = CommandType::StoredProcedure;
        cmd->CommandText = "StoriesWhereLastName";

        cmd->Parameters->Add(gcnew SqlParameter("@LastName",SqlDbType::VarChar));
        cmd->Parameters["@LastName"]->Value = Name;

        reader = cmd->ExecuteReader();

        while(reader->Read())
        {
            Console::WriteLine(reader["StoryID"]);
            Console::WriteLine(reader["Headline"]);
            Console::WriteLine(reader["Story"]);
            Console::WriteLine();
        }
        reader->Close();
    }
    catch (SqlException ^e)
    {
        Console::WriteLine("No connection the following error occurred: {0}",
            e->Message);
    }
    finally
    {
        connection->Close();
    }
}

   
  
Related examples in the same category
1.Read scalar
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.