Question

determine how many file sharing connections available in XP pro

Asked by: guidway

Is it possible in .Net (preferably C#, but VB.net is fine also) to create an application that would monitor the number of concurrent file sharing connections to a particular machine to warn us if we are about to hit the XP Pro limit of 10? What .NET/Windows method/class would I access to get this information? Right now we get the error message: "No more connections can be made to this remote computer at this time because there are already as many connections as the computer can accept." however I want to write a monitor that would let us know exactly how many connections are used/free before we get to this point.

thanks
guid

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Asked On
2009-06-11 at 19:43:58ID24485425
Topics

Microsoft Visual C#.Net

,

C# Programming Language

Participating Experts
1
Points
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Answers

 

by: TheLearnedOnePosted on 2009-06-12 at 08:41:02ID: 24613326

I believe that you can get that information with WMI (Windows Management Instrumentation), and the Win32_ServerSession class.

Here is an example, using a Win32_ServerSession query:

// Add a reference to the System.Management.dll to your project.
//
// Source:
//    http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2905312&SiteID=1
 
using System;
using System.Management;
using System.Collections.Generic;
 
public class Win32_ServerSession
{
 
    public List<ResourceUsage> GetOpenFiles()
    {
        
        SelectQuery query = new SelectQuery("Select ComputerName, UserName, ResourcesOpened From Win32_ServerSession");
 
        List<ResourceUsage> list = new List<ResourceUsage>();
 
        using (ManagementObjectSearcher searcher = new ManagementObjectSearcher(query))
        {
 
            foreach (ManagementObject obj in searcher.Get())
            {
 
                list.Add(new ResourceUsage(
                    obj.Properties["UserName"].Value.ToString(),
                    obj.Properties["ComputerName"].Value.ToString(),
                    obj.Properties["ResourcesOpened"].Value.ToString()));
            }
        }
 
        return list;
    }
}
 
public class ResourceUsage
{
    private string _userName;
    private string _computerName;
    private string _resourceName;
 
    public ResourceUsage (string user, string computer, string resource)
	{
        _userName = user;
        _computerName = computer;
        _resourceName = resource;
	}
 
	public string UserName
	{
	  get { return _userName; }
	}
 
    public string ComputerName
	{
	  get { return _computerName; }
	}
 
    	public string ResourceName
	{
	  get { return _resourceName; }
	}
 
}

                                              
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by: guidwayPosted on 2009-06-12 at 20:22:25ID: 24617654

I thought at first that would work but noticed it kept returning an empty collection. From looking on the internet it appears that class will only work if the "Server" is a win 2003 server, in our case it isn't a true server just a XP pro machine so nothing happens. I even tried using a vbs script to execute it and received no output from the query. Even tried using localhost with no result. Any other ideas?

 

by: guidwayPosted on 2009-06-12 at 20:34:50ID: 24617682

oops, forget that...,  still testing...

 

by: guidwayPosted on 2009-06-12 at 21:03:49ID: 24617725

I realized after I could do this in vbs (which is a lot simpler for my needs) so I re-wrote it.

strServer = "."

Set objWMI = GetObject("winmgmts://" & strServer & "\root\cimv2")
Set objInstances = objWMI.InstancesOf("Win32_ServerSession",48)

For Each objInstance in objInstances
   WScript.Echo objInstance.getObjectText_
Next

thanks as I would not have figured out what I needed to do without your help. :)

20120131-EE-VQP-002

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