at first network printers have to be installed on local pc or have to be sharded, in order for your program be able to see it.
You can use printer interigation via c# code and get basic informations.
For detail information i have not find solution via c# and had to use WMI in order to get informations about each print job.
Tomorow if you do not find solution i will send you script example for print interigation.
winodws prining hold information about job:
what is print queue, who was the user that send, job name, time etc.

as promissed:

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Printing;
using System.Text;
using System.Management;

 static void Main(string[] args)
        {
            Console.WriteLine("Interigation of printers");
            LocalPrintServer lps = new LocalPrintServer();
            getQueues(lps);
            Console.Read(); //wait for keypress before terminating
        }
        private static void getQueues(LocalPrintServer lps)
        {

            //this will select one printer
            //getJobsForQueue("testingPrinter");

            
             // list of all printers suported in c#
             foreach (PrintQueue pq in lps.GetPrintQueues()) 
             {
                 getJobsForQueue(pq.Name.ToString());
            
             }
            
        }
        private static void getJobsForQueue(string queueName)
        {
           //do query via wmi
            string query = "select * from Win32_PrintJob where name like '" + queueName + "%'";

            ManagementObjectSearcher f_SearchPrintJobs = new ManagementObjectSearcher(query);
            ManagementObjectCollection f_PrntJobCollection = f_SearchPrintJobs.Get();


            foreach (ManagementObject f_PrntJob in f_PrntJobCollection)
            {
                //get all keys for this job
                ArrayList alParam = new ArrayList();
                foreach (System.Management.PropertyData pData in f_PrntJob.Properties)
                {
                    alParam.Add(pData.Name.ToString());
                }
                //sort for easy reading
                alParam.Sort();
                foreach (string name in alParam)
                {
                    if (f_PrntJob.Properties[name].Value != null)
                    {
//name of key : name,
//value of key: f_PrntJob.Properties[name].Value.ToString()
                    }
                    else
                    {

                        //key doesnt have value
                    }
                }
                
            }
        }

see answer that i have edited above :)

I copy your code and save it in test1.cs.
At the Visual Studio 2008 Command Prompt, when I compile, I have a list of errors as below:

>csc test.1cs

test1.cs(9,8): error CS1518: Expected class, delegate, enum, interface, or struct
test1.cs(9,25): error CS1001: Identifier expected
test1.cs(9,27): error CS1518: Expected class, delegate, enum, interface, or struct
test1.cs(12,28): error CS1518: Expected class, delegate, enum, interface, or struct
test1.cs(15,1): error CS1022: Type or namespace definition, or end-of-file expected

Also, have you looked into PrinterQueueWatch.NET from http://www.merrioncomputing.com ?
also http://puma.codeplex.com/ has a very useful application, but their code is in VB.NET, what I want is in C#.NET.

yes, agree that it is easier to build up code ourselves, rather than rely on complete products.
My below code works when the Form loads and I can get a list of Network Printers in listBox1.
I am also able to see a specific printer's property name and value in listBox2.

private void Form1_Load(object sender, EventArgs e)
{
foreach (String printer in PrinterSettings.InstalledPrinters)
{

listBox1.Items.Add(printer.ToString());
}
}

private void button1_Click(object sender, EventArgs e)
{
string printerName = "Ricoh-L4-1";
string query = string.Format("SELECT * from Win32_Printer WHERE Name LIKE '%{0}'", printerName);
ManagementObjectSearcher searcher = new ManagementObjectSearcher(query);
ManagementObjectCollection coll = searcher.Get();

foreach (ManagementObject printer in coll)
{
foreach (PropertyData property in printer.Properties)
{
listBox2.Items.Add(string.Format("{0}: {1}", property.Name, property.Value));
}
}
}

But when I try to find JobId, Owner, TotalPages for a particular printer (when I actually send jobs to print to that printer), those values do not display at all.

private void button2_Click(object sender, EventArgs e)
{
listBox2.Items.Clear();
string printerName = "Ricoh-L4-1";
string query = string.Format("SELECT * from Win32_PrintJob WHERE Name LIKE '%{0}'", printerName);

ManagementObjectSearcher SearchPrintJobs = new ManagementObjectSearcher(query);
ManagementObjectCollection PrntJobCollection = SearchPrintJobs.Get();
foreach (ManagementObject PrntJob in PrntJobCollection)
{
string m_JobID = PrntJob.Properties["JobId"].Value.ToString();
string m_Owner = PrntJob.Properties["Owner"].Value.ToString();
string m_TotalPages = PrntJob.Properties["TotalPages"].Value.ToString();
listBox2.Items.Add(string.Format("{0}:{1}:{2}", m_JobID,m_Owner,m_TotalPages));
}
}

Do you have any idea how to get above to work? thanks in advance.