MS SQL Northwind & Pub databases | ‘sp_dboption’

November 6, 2017

Hi guys

Today I am going to upload two SQL scripts using which you could build Northwind & Pub databases against latest versions of MS SQL Server. The latest tested at my end is SQL Server 2014

I have packaged these scripts to avoid the error “Could not find stored procedure ‘sp_dboption’.” error that arises when Microsoft provided SQL scripts are executed against latest database technologies.

You may download the SQL scripts from this link

MD5: 5831113f5ec890986312d2ed532a13e2

SHA-1: 57484de9bea37c5e0b8ba84454e8093612d96df6

regards,

rajesh

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C# A folder sync tool

January 26, 2017

Hi guys!

I’ve been busy with so many developments recently. Few projects for Oracle E-Business Suite R12 & few others for learning C#. I can say I’ve “learned” how to copy, paste, correct and use it with my projects to produce beautiful results!

My recent C# projects include a WPF solution that uses WMI classes to generate hardware details for entire Windows Domain (Linux boxes are not dealt) & today I’ve decided to build a small solution that could synchronize my C# projects with our file server.

This small project can,

  • Replicate source Directory, subdirectories & files to destination folder
  • While re-ran, check whether the destination files are older than the source files and, if yes, overwrite the old ones with newer ones.

Interested to try it yourself? here comes the code

(This project uses codes copied from both MSDN & http://www.stackoverflow.com. RecursiveFileProcessor is a MSDN example, while File exists snippet was copied from stackoverflow)

using System;
using System.IO;
using System.Collections;

//http://stackoverflow.com/questions/58744/copy-the-entire-contents-of-a-directory-in-c-sharp
//

namespace RecursiveFileProcessor
{
    class Program
    {
        public static void Main(string[] args)
        {
            string sourceDirectory = @"D:\MyProjects";
            string targetDirectory = @"\\network_share_location\MyProjects";
            Copy(sourceDirectory, targetDirectory);
            Console.WriteLine();
            Console.WriteLine("Task Completed. Press any key to continue");
            Console.ReadLine();

        }

        public static void Copy(string sourceDirectory, string targetDirectory)
        {
            DirectoryInfo diSource = new DirectoryInfo(sourceDirectory);
            DirectoryInfo diTarget = new DirectoryInfo(targetDirectory);

            CopyAll(diSource, diTarget);
        }

        public static void CopyAll(DirectoryInfo source, DirectoryInfo target)
        {

            Directory.CreateDirectory(target.FullName);

            // Copy each file into the new directory.
            foreach (FileInfo fi in source.GetFiles())
            {

                DateTime created = fi.CreationTime;
                DateTime lastmodified = fi.LastWriteTime;

                if (File.Exists(Path.Combine(target.FullName, fi.Name)))
                {
                    string tFileName = Path.Combine(target.FullName, fi.Name);
                    FileInfo f2 = new FileInfo(tFileName);
                    DateTime lm = f2.LastWriteTime;
                    Console.WriteLine(@"File {0}\{1} Already Exist {2} last modified {3}", target.FullName, fi.Name, tFileName, lm);

                    try
                    {
                        if (lastmodified > lm)
                        {
                            Console.WriteLine(@"Source file {0}\{1} last modified {2} is newer than the target file {3}\{4} last modified {5}",
                                fi.DirectoryName, fi.Name, lastmodified.ToString(), target.FullName, fi.Name, lm.ToString());
                            fi.CopyTo(Path.Combine(target.FullName, fi.Name), true);
                        }
                        else
                        {
                            Console.WriteLine(@"Destination File {0}\{1} Skipped", target.FullName, fi.Name);
                        }
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine(ex.Message);
                    }

                }
                else
                {
                    Console.WriteLine(@"Copying {0}\{1}", target.FullName, fi.Name);
                    fi.CopyTo(Path.Combine(target.FullName, fi.Name), true);
                }

            }

            // Copy each subdirectory using recursion.
            foreach (DirectoryInfo diSourceSubDir in source.GetDirectories())
            {
                DirectoryInfo nextTargetSubDir =
                    target.CreateSubdirectory(diSourceSubDir.Name);
                CopyAll(diSourceSubDir, nextTargetSubDir);
            }
        }

    }
}

Thumb rules:

  1. Do not set your source and destination folders the same.

This project uses Framework 4.5 & I am sure versions above 2.0 should support the classes referred.

If you are new to .net developments, create a project with the name “RecursiveFileProcessor”, which will let you copy and paste the whole code as it is to your project.

Do let me know whether you enjoyed your new sync toy!

regards,

rajesh


C# (CSharp, C-Sharp) Windows Active Directory last logon

January 7, 2017

Hi guys

Please note, many threads were referred in order to compile the script attached below & all I did was re-arranging in order for better reading/formatting

(And I insure that the script works under following scenarios:

  1. You are a domain administrator
  2. You are administrating Windows 2003 onwards Windows domain
  3. Your puter is connected to the domain network ;)

)

Referenced websites/threads

  1. http://stackoverflow.com/questions/15775264/searching-for-lastlogon-attribute-of-user-in-multiple-domain-servers
  2. https://www.codeproject.com/kb/security/lastlogonacrossallwindows.aspx#_comments
  3. http://codebeautify.org/csharpviewer (for formatting the C# code)

How to test the code

Start Visual Studio (I am using 2013 Professional edition, you can use any of the community editions to test the scripts)

Create a new C# Console Application and name it llogon (else you need to change the namespace name “llogon” according to the name you have chosen for your new project.

Add the following references to your project

  1. “Framework -> System.DirectoryServices”
  2. “Browse and add -> C:\Windows\System32\activeds.tlb”

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

//Added by Rajesh

//using System.Management;
//using System.Data;
using System.DirectoryServices;
using System.DirectoryServices.ActiveDirectory;
//http://stackoverflow.com/questions/33274162/the-namespace-of-iadslargeinteger
//ActiveDS namespace
using ActiveDs; // Namespace added via ref to C:\Windows\System32\activeds.tlb
//https://www.codeproject.com/kb/security/lastlogonacrossallwindows.aspx

namespace llogon
{
    class Program
    {
        static void Main(string[] args)
        {
            // Get the root entry
            DirectoryEntry rootDSE = new DirectoryEntry("LDAP://RootDSE");
            string configurationNamingContext =
             (string)rootDSE.Properties["configurationNamingContext"].Value;
            string defaultNamingContext =
             (string)rootDSE.Properties["defaultNamingContext"].Value;
            Dictionary<string, Int64> lastLogons = new Dictionary<string, Int64>();
            // Get all the domain controllers
            DirectoryEntry deConfig = new DirectoryEntry("LDAP://" + configurationNamingContext);
            DirectorySearcher dsConfig = new DirectorySearcher(deConfig);
            dsConfig.Filter = "(objectClass=nTDSDSA)";
            foreach (SearchResult srDomains in dsConfig.FindAll())
            {
                DirectoryEntry deDomain = srDomains.GetDirectoryEntry();
                if (deDomain != null)
                {
                    string dnsHostName =
                     deDomain.Parent.Properties["DNSHostName"].Value.ToString();
                    // Get all the users for that domain
                                   DirectoryEntry deUsers =
                     new DirectoryEntry("LDAP://" + dnsHostName + "/" + defaultNamingContext);
                    DirectorySearcher dsUsers = new DirectorySearcher(deUsers);
                    dsUsers.Filter = "(&(objectCategory=person)(objectClass=user))";
                    foreach (SearchResult srUsers in dsUsers.FindAll())
                    {
                        DirectoryEntry deUser = srUsers.GetDirectoryEntry();
                        if (deUser != null)
                        {
                            // Get the distinguishedName and lastLogon for each user
                            // Save the most recent logon for each user in a Dictionary object
                            string distinguishedName = deUser.Properties["distinguishedName"].Value.ToString();
                            Int64 lastLogonThisServer = new Int64();
                            if (deUser.Properties["lastLogon"].Value != null)
                            {
                                IADsLargeInteger lgInt =
                                 (IADsLargeInteger)deUser.Properties["lastLogon"].Value;
                                lastLogonThisServer = ((long)lgInt.HighPart << 32) + lgInt.LowPart;
                            }

                            // Save the most recent logon for each user in a Dictionary object
                            if (lastLogons.ContainsKey(distinguishedName))
                            {
                                if (lastLogons[distinguishedName] < lastLogonThisServer)
                                {
                                    lastLogons[distinguishedName] = lastLogonThisServer;
                                }
                            }
                            else
                            {
                                lastLogons.Add(distinguishedName, lastLogonThisServer);
                            }
                            string readableLastLogon = DateTime.FromFileTime(lastLogonThisServer).ToString();
                            Console.WriteLine("User: " + distinguishedName + "Last logon: " +readableLastLogon);
                        }
                    }
                    Console.ReadLine();
                }
            }

        }
    }
}

Try the code & if you are stuck somewhere, do let me through the comments. I am working on a WPF C# project for a simple Active Directory Reporter / Asset Management System using WMI. Stay tuned & I will soon post the entire solution here :)

regards,

rajesh

 


ASP.Net | Learn the basics of developing your first website using VB.Net or C#

March 8, 2015

You are here, seeking some information and we are more than happy to re-direct you to http://webproject.scottgu.com, a right place to start learning how to develop a website using Visual Studio IDE. Though the posts with scottgu.com mostly deal with VS 2005, almost everything they mentioned with their lessons are still applicable to the latest VS releases.
So give it a try, and you will be more than glad to visit one of the best beginners place.

regards,

rajesh


Visual Studio 2013 | HRESULT 0x80070002 exception

March 2, 2015

Scenario

A brand new installation of Visual Studio 2013

You are trying to create a new project/solution and immediately after choosing the type of the application (eg: Single page web application) an error raised saying referenced file cannot be found, followed by the error code HRESULT 0x80070002

Solution

Go to http://docs.nuget.org/consume/installing-nugget

Select the build of your Visual Studio NuGet client and move to the download page

Download the package (After closing down the Visual Studio, if yet open) and install the package

Restart Visual Studio and the error must have been gone by now.

Happy Programming guys ;)

regards,

rajesh


Teaser | Visual Studio | VB.Net & Oracle Database

March 2, 2015

t1

Okay, my last few posts were all about VB.Net & utilities for Windows domain administrators. Doesn’t mean that I stopped being a Oracle bouy ;) I still earn my salary for the Oracle job I do everyday at work and once after managing to purchase a legal copy of Visual Studio 2013 Professional Edition, I am committed to develop few sample applications using VB.Net & Oracle database.

So, stay tuned

regards,

rajesh


VB.Net | Appending an existing XML file

February 23, 2015

VB.Net | Appending an existing XML file

XML is widely used by .net oriented programming. It is vast and learning XML could be requiring loads of dedication. I needed to add a XML file to hold certain configuration details that could be read with one of the VB.Net projects currently I am busy with. This project deals with running Oracle VirtualBox VM(Virtual Machines) headless using a Windows Service as Local System so that multiple administrators could log in and log off from the Windows Server that hosts Virtual machines without closing down the machines abrupt (This project is ongoing, half cooked)

Without wasting more time, let us see how to append an “existing” XML file using VB.Net

Create a Windows Form Project
Create a XML file (MyVMS.xml) using your favorite text editing tool and copy the below

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<VM>
<MACHINE>
    <MACHINE_ID>1</MACHINE_ID>
    <VM_NAME>MyVM</VM_NAME>
    <VM_SHUTDOWNMODE>poweroff</VM_SHUTDOWNMODE>
  </MACHINE>
</VM>

and copy the XML file to the project root folder

Add the namespaces to your new project

Imports System.Xml
Imports System.Data

As I said in the beginning, we will be adding data to an “existing” XML file, hence the XML files must have a root element, for example

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<VM>
</VM>

Drag a button to your forms1.vb design view
Drag another button to your forms1.vb design view
Drag a DataGridView to your forms1.vb design view

Now we will try to add one more “MACHINE” node into the existing XML file using VB.Net code block

Public Class Form1
 
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim xmldoc As New XMLDocument()
        Try
            xmldoc.Load("MyVMS.xml")
            Dim e1 As XmlElement = xmldoc.CreateElement("MACHINE")
            Dim e2 As XmlElement = xmldoc.CreateElement("MACHINE_ID")
            e2.InnerText = "2"
            Dim e3 As XmlElement = xmldoc.CreateElement("VM_NAME")
            e3.InnerText = "Linux"
            Dim e4 As XmlElement = xmldoc.CreateElement("VM_SHUTDOWNMODE")
            e4.InnerText = "savestate"
 
            e1.AppendChild(e2)
            e1.AppendChild(e3)
            e1.AppendChild(e4)
 
            xmldoc.DocumentElement.AppendChild(e1)
            xmldoc.Save("MyVMS.xml")
 
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
    End Sub
 
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
        Dim xmlFile As XmlReader
        xmlFile = XmlReader.Create("MyVMS.xml", New XmlReaderSettings())
        Dim ds As New DataSet
        ds.ReadXml(xmlFile)
        DataGridView1.DataSource = ds.Tables(0)
        DataGridView1.Columns(0).HeaderText = "Id"
        DataGridView1.Columns(1).HeaderText = "VM Name"
        DataGridView1.Columns(2).HeaderText = "Shutoff Mode"
 
    End Sub
End Class

Now, as you click on the first button, a new node for “MACHINE” will be inserted using the static information attached & by activating the second button, your data grid view should populate the MACHINE information already stored within the XML file.

Pretty simple & easy, right? You may rush ahead and say thanks to my dearest friend and ONE of the best .Net programmers Aziz Marafi / @azizane , who had coded majority of the block above for the “FileMyster” project.

Please post your comments and queries and I may learn few more things with you!

regards,

rajesh