Develop Reference

Retrieve Hard drive info through WMI .NET C#

So i've used this code to get S.M.A.R.T. hard drive diagnostics info from Windows WMI:
http://vasters.com/archive/Reading-ATAPI-SMART-Data-From-Drives-Using-NET-Temperature-Anyone.html
It works on most computers and doesn't on others. After a little bit research and sample testing i found out that it doesn't work on computers whose Hard drives are connected with PCI Express instead of SATA.
var searcher = new ManagementObjectSearcher("root\\WMI", "SELECT * FROM MSStorageDriver_ATAPISmartData");
foreach (ManagementObject queryObj in searcher.Get())
{
//do stuff
}
This is where i get exception:
System.Management.ManagementException: 'Not supported'
Is there any other way to do this, or add something in this code to make it work?

I searched this code everywhere and couldn't find working for me, but finaly found on another forum so it's really simple in usage.
Just from my example another way to get WMI info. More Attributes of WMI Win32_DiskDrive you can find in Microsoft DOCs
https://github.com/Mityugin/greentest
string NamespacePath = "\\\\.\\ROOT\\cimv2";
string ClassName = "Win32_DiskDrive";
oClass = new ManagementClass(NamespacePath + ":" + ClassName);
foreach (ManagementObject oObject in oClass.GetInstances())
{
var sign = Convert.ToString(oObject["Signature"]);
var model = Convert.ToString(oObject["Model"]);
var status = Convert.ToString(oObject["Status"]);
if (Equals(sign,""))
{
TextBox1.AppendText("DISK model: " + model);
TextBox1.AppendText(Environment.NewLine);
TextBox1.AppendText("Status: " + status);
TextBox1.AppendText(Environment.NewLine);
if (!status.Equals("OK") || !model.Contains("SSD"))
{
//Here is info if Disk is not OK or model not SSD
}
}
}

This github solution is fine for detecting an SSD but will not tell you it is PCIE or NVMe. I have an SSD that is an older Samsung 960 series and it is an SSD connected via SATA.
The code you need to read an NVMe drive Temperature is on this website at How do I enumerate NVMe (M2) drives an get their temperature in c#?

searching for installed drivers: all properties are empty

I want to get all a list of all installed drivers on my machine. For this purpose I use WMI. But for unknown reason all properties returned have empty values (except for deviceID, DriverVersion and Signer) .
What I tried and considered so far:
running with and without admin rights makes no difference
no methods found like fetch, load, reload on any of involved objects found
no option found like lazyload
pnputil.exe and driversearch.exe do return data of all drivers, but the outputs of those a very hard to interpret
This is the C#-code:
using (var searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PnPSignedDriver"))
{
foreach (ManagementBaseObject u in searcher.Get())
{
foreach(PropertyData prop in u.Properties)
{
System.Console.WriteLine($"{prop.Name}={prop.Value}");
}
System.Console.WriteLine("===");
}
}
Output for first driver found:
Caption=
ClassGuid=
CompatID=
CreationClassName=
Description=
DeviceClass=
DeviceID=\\SVWPSW46\P3115 X WC 7120-D C S U A3
DeviceName=
DevLoader=
DriverDate=
DriverName=
DriverProviderName=
DriverVersion=2:6.0,2:5.2,2:5.1,2:5.0
FriendlyName=
HardWareID=
InfName=
InstallDate=
IsSigned=True
Location=
Manufacturer=
Name=
PDO=
Signer=Microsoft Windows
Started=
StartMode=
Status=
SystemCreationClassName=
SystemName=
===
...

Try to read Values in LOcal Group policy

I am trying to read two setting values in Local Group policy (gpedit.msc). The path is :
Local Computer Policy\Windows Settings\Security Settings\Local Policies\User Rights Assignment
The Policy that I want to read are :
1. Perform volume maintainace tasks (Users assigned to it)
2. Lock Pages in memory (Users assigned to it).
I have searched the web (including all stackoverflow threads) and could not find a solution to this but could not get a solution to this. Below is the code I am using currently but it only returns me 7 values.
I am not sure if this is possible. Please suggest. I am using C# .NET as language and would prefer if possible be able to read these setting from a remote machine (so I am preferring WMI approach).
Also I only want to read values. Now editing or writing...
Please suggest..
Girija
Code
private void Test()
{
ManagementScope scope =
new ManagementScope(
"\\\\localhost\\root\\rsop\\Computer");
scope.Connect();
ObjectQuery query = new ObjectQuery(
"SELECT * FROM RSOP_UserPrivilegeRight");
ManagementObjectSearcher searcher =
new ManagementObjectSearcher(scope, query);
ManagementObjectCollection queryCollection = searcher.Get();
List<string> val = new List<string>();
foreach (ManagementObject mgo in queryCollection)
{
var d = mgo["Name"];
val.Add(Convert.ToString(d));
}
}

How to lookup Hard Drive model with C#?

In part of a program I am writing, I'm trying to pull device information about specified local hard drives. I've been able to create a few value returning methods using the DriveInfo class like this:
//Gets drive format
public string GetDriveFormat(string driveName)
{
foreach (DriveInfo drive in DriveInfo.GetDrives())
{
if (drive.IsReady && drive.Name == driveName)
{
return drive.DriveFormat;
}
}
return "";
}
//Example of use
MessageBox.Show(GetDriveFormat("C:\\"));
The problem I'm running into now is that there doesn't seem to be a Model property to the DriveInfo class. I've looked all over but am unable to find a way to construct a value returning method that will return the model of a drive like what is viewable in device manager.
Any help would be greatly appreciated,
Thanks!

Unfortunately, you cannot get the Drive's Manufacturer and Model using the DriveInfo class.
You'll have to resort back to WMI:
WqlObjectQuery q = new WqlObjectQuery("SELECT * FROM Win32_DiskDrive");
using (ManagementObjectSearcher res = new ManagementObjectSearcher(q)) {
foreach (ManagementObject o in res.Get()) {
Console.WriteLine("Caption = " + o["Caption"]);
Console.WriteLine("DeviceID = " + o["DeviceID"]);
Console.WriteLine("Decsription = " + o["Description"]);
Console.WriteLine("Manufacturer = " + o["Manufacturer"]);
Console.WriteLine("MediaType = " + o["MediaType"]);
Console.WriteLine("Model = " + o["Model"]);
Console.WriteLine("Name = " + o["Name"]);
// only in Vista, 2008 & etc: //Console.WriteLine("SerialNumber = " + o["SerialNumber"]);
} }
Not sure if you need to consider mounted drives as well:
foreach(ManagementObject volume in new ManagementObjectSearcher("Select * from Win32_Volume" ).Get())
{
...
}

You'll need to use a lower-level API to get this information, and even then it still might not be accurate.* The internal details of the hard drives is exposed in the Win32 APIs, which you can still access in C# through WMI.
*: Note that this is still limited to the hardware information as Windows is able to see it. In some conditions, it won't or can't be accurate (e.g. with a RAID array, where Windows sees N drives as a single drive).

I'm not entirely sure if you can get that info without using lower level api's. This post should help you achieve your goal.
http://www.codeproject.com/Articles/17973/How-To-Get-Hardware-Information-CPU-ID-MainBoard-I
Quick summary of the link:
Add a reference to the System.Management library
Then you can use:
var disks = new ManagementObjectSearcher("SELECT * FROM Win32_DiskDrive");
foreach (ManagementObject disk in disks.Get())
{
Console.WriteLine(disk["Model"].ToString());
Console.WriteLine("\tSerial: " + disk["SerialNumber"]);
}

here is something that can also work for you feel free to tweak it as you please
String drive = "c";
ManagementObject disk = new ManagementObject("Win32_LogicalDisk.DeviceID=\"" + drive + ":\"");
disk.Get();
Console.WriteLine(disk["VolumeName"]);
foreach (var props in disk.Properties)
{
Console.WriteLine(props.Name + " " + props.Value);
}
Console.ReadLine();

different results for web and desktop applications for same code

I have the following piece of code.
It is returning different results when running on the same machine in case of web and desktop applications.
Here is my code. Please guide me on what to do regarding this???
var searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia");
return (from ManagementObject wmiHD in searcher.Get()
select wmiHD["SerialNumber"] == null ? "VM HD" : wmiHD["SerialNumber"].ToString()).ToList();
Here is a LINQ-free version of the same code
var hdCollection = new List<string>();
var searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia");
foreach (ManagementObject wmiHD in searcher.Get())
{
// get the hardware serial no.
if (wmiHD["SerialNumber"] == null)
{
hdCollection.Add("VM HD");
}
else
{
hdCollection.Add(wmiHD["SerialNumber"].ToString());
}
}
return hdCollection;

That could possibly be caused by two things:
web server runs with different user account (probably NetworkService)
http://www.bluevisionsoftware.com/WebSite/TipsAndTricksDetails.aspx?Name=AspNetAccount
web server runs code without Fulltrust permissions (probably medium trust)
http://discussion.accuwebhosting.com/iis-web-server/993-how-grant-full-trust-mode-domain-asp-net-2-0-iis-6-0-a.html
Both actions can compromise security, but the first one gives more choices to fix this by setting ACLs.