Solved

disk space

Posted on 2004-09-09
5
526 Views
Last Modified: 2012-06-27
I'm trying to figure out how much disk space is on a network drive.  I have found several examples but none of them give me the correct size.

I used the info  obtained from this question:
http://www.experts-exchange.com/Programming/Programming_Languages/C_Sharp/Q_20747539.html?query=check+disk+space+and+C&clearTAFilter=true&showAll=true

The code gives me disk space info, but what I don't understand is the number don't match up at all.  The code says I had two drives a (C: and D:) which is correct, but then the code outputed that C: was 125GB and had 35GB free, the D: drive supposely was 23Gb drive with 11Gbs free.  None of this info is even closely correct.  C drive is a 20Gb drive with 13GB free and D drive is 450GB with 48GB free.  

I also tried this on several other network drives and my local drive...and I got the SAME INDENTICAL NUMBERS as stated a above.
Can some one shed some light on this subject.  What am I not seeing or not doing correctly????


Thanks!


CODE:

ConnectionOptions oConn = new ConnectionOptions();
long gb = 134217728; //gigabyte
 
System.Management.ManagementScope oMs = new System.Management.ManagementScope("\\\\na0029", oConn);    

//get Fixed disk stats
System.Management.ObjectQuery oQuery = new System.Management.ObjectQuery("select FreeSpace,Size,Name from Win32_LogicalDisk where DriveType=3");

//Execute the query  
ManagementObjectSearcher oSearcher = new ManagementObjectSearcher(oMs,oQuery);

//Get the results
ManagementObjectCollection oReturnCollection = oSearcher.Get();  
         
//loop through found drives and write out info
foreach( ManagementObject oReturn in oReturnCollection )
{
     // Disk name
     lw.WriteLine("Name : " + oReturn["Name"].ToString());
     // Free Space in bytes
     long ndiv = Convert.ToInt64(oReturn["FreeSpace"])/gb;
     lw.WriteLine("FreeSpace : " + ndiv.ToString());
     // Size in bytes
     ndiv = Convert.ToInt64(oReturn["Size"])/gb;
     lw.WriteLine("Size : " + ndiv);
}

OUTPUT:
Name : C:
FreeSpace : 35 GB
Size : 125 GB
Name : D:
FreeSpace : 11 GB
Size : 23 GB



0
Comment
Question by:mrwhipple
  • 3
  • 2
5 Comments
 
LVL 4

Accepted Solution

by:
NTAC earned 500 total points
Comment Utility
Use this code:

************************
ConnectionOptions oConn = new ConnectionOptions();
double gb = 1073741824.0; //gigabyte
 
System.Management.ManagementScope oMs = new System.Management.ManagementScope("\\\\na0029", oConn);    

//get Fixed disk stats
System.Management.ObjectQuery oQuery = new System.Management.ObjectQuery("select FreeSpace,Size,Name from Win32_LogicalDisk where DriveType=3");

//Execute the query  
ManagementObjectSearcher oSearcher = new ManagementObjectSearcher(oMs,oQuery);

//Get the results
ManagementObjectCollection oReturnCollection = oSearcher.Get();  
         
//loop through found drives and write out info
foreach( ManagementObject oReturn in oReturnCollection )
{
     // Disk name
       Console.WriteLine("Name : " + oReturn["Name"].ToString());
       // Free Space in bytes
       double ndiv = Convert.ToInt64(oReturn["FreeSpace"])/gb;
       Console.WriteLine("FreeSpace : " + ndiv.ToString());
       // Size in bytes
       ndiv = Convert.ToInt64(oReturn["Size"])/gb;
       Console.WriteLine("Size : " + ndiv);
}

**********************

You choice of a gigabyte was wrong.  Also, use a double or a decimal so you can keep the decimal place.  You can change the formatting because it outputs 10 decimal places.

1 GB = 1024*1024*1024 (1 kilobyte = 1024 bytes).

Regards,
NTAC
0
 
LVL 1

Author Comment

by:mrwhipple
Comment Utility
Thanks for the quick reply,

I get the right numbers when I test my local machine, but it seems when I try and access a network machine I get the same values.  Does this code not work when accessing a machine that is not locally?

Does the path matter?  the machine name is na0029, I get no errors when using it : (ie)
System.Management.ManagementScope oMs = new System.Management.ManagementScope("\\\\na0029", oConn);    
I've tried adding to the path: for example add the shared folder on to the path, but all that does is error out on the above line.


Thanks.

0
 
LVL 4

Expert Comment

by:NTAC
Comment Utility
With my mapped drives, I can see them when I change the DriveType=4 (networked drives).  I'm not sure how your system is set up.  Do  you have a mapped drive to the other computer, or is it just a folder?  How is it set up?
0
 
LVL 1

Author Comment

by:mrwhipple
Comment Utility
I have it setup as a mapped drive.

I get the info when I change my DriveType=4, excellent, is it possible to do it with out the drive being mapped?  Reason I asked is because this code will be part of a program that is on 200+ processing machines that are able to access 30+ network storage machines.  So it will be cumbersome if I have to map all the network storage machines on all 200+ machines!


Thanks.



   
0
 
LVL 4

Expert Comment

by:NTAC
Comment Utility
mrwhipple

Now you are asking a different question.  I guess a way you could do it is to query the name of all computers on the network (or a list of them that you already know)--and then use the above code to retreive the local drive(s) on the system.  If you happen to know the setup of each of the storage systems, it might be a bit easier.

Regards,
NTAC
0

Featured Post

Enabling OSINT in Activity Based Intelligence

Activity based intelligence (ABI) requires access to all available sources of data. Recorded Future allows analysts to observe structured data on the open, deep, and dark web.

Join & Write a Comment

Bit flags and bit flag manipulation is perhaps one of the most underrated strategies in programming, likely because most programmers developing in high-level languages rely too much on the high-level features, and forget about the low-level ones. Th…
It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, Just open a new email message.  In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…
Access reports are powerful and flexible. Learn how to create a query and then a grouped report using the wizard. Modify the report design after the wizard is done to make it look better. There will be another video to explain how to put the final p…

744 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now