I need to get basic information about the computer's processor in a WPF application I'm writing.
Data such as "Intel(R) core(TM) 2 Quad CPU Q6600 # 2.4GHz"
How do I do this?
Use WMI
using System.Management;
private static string GetProcessorID()
{
ManagementClass mgt = new ManagementClass("Win32_Processor");
ManagementObjectCollection procs= mgt.GetInstances();
foreach ( ManagementObject item in procs)
return item.Properties["Name"].Value.ToString();
return "Unknown";
}
This information (and much, much more) is available via Windows Management Instrumentation (or WMI for short). It isn't technically tied to WPF. Please take a look at this article to get you started!
Some of what you're looking for is exposed by properties of the System.Environment class. You might also be interested in the System.Windows.Forms.SystemInformation class.
Use WMI to obtain the information needed, especially the classes in the System.Management namespace. First. add a reference to the System.Management assembly, then use code similar to this one:
ManagementClass wmiManagementProcessorClass = new ManagementClass("Win32_Processor");
ManagementObjectCollection wmiProcessorCollection = wmiManagementProcessorClass.GetInstances();
foreach (ManagementObject wmiProcessorObject in wmiProcessorCollection)
{
try
{
MessageBox.Show(wmiProcessorObject.Properties["Name"].Value.ToString());
}
catch (ManagementException ex)
{
// real error handling here
MessageBox.Show(ex.Message);
}
}
Related
I searched a lot but did not find any working codes getting SPD tables information via C#. Out there there are lots of softwares which get this info but HOW?
as shown in the image, for RAM devices, you can see Manufacture's name which can not be retrieve at all by WMI etc
If there is a DLL for using in C# will be perfect also
After some Research found this:
https://github.com/sapozhnikovay/SMBIOS
but it can not read table 17 to get memory device information.
Once I was researching about this, you need to get this information through SMBUS (not SMBIOS). But you need to create a driver (WDM in C/C++) to access this information.
Make sure you have added System.Management as a reference.
Here is a string that will return almost any information you want from the component :
private string getComponent(string hwClass, string syntax)
{
ManagementObjectSearcher mos = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM " + hwClass);
foreach (ManagementObject mj in mos.Get())
{
return Convert.ToString(mj[syntax]);
}
return null;
}
Using the string would look like this, say on a button click :
label1.Text = getComponent("Win32_PhysicalMemory", "SerialNumber");
I tested it and it returned a serial number, you can also look at the list of things you can put in like manufacturer, name, capacity etc.
I got all of this information from this YouTube video.
You can find all of the devices and their properties here (CPU, GPU, etc.)
I'm writing a WMI Provider and I've managed to retrieve all info on the Computer System and Hardware Classes but cannot get data I want from the Performance Counter Classes. (Win32 Classes)
Looking through the MSDN documentation and using examples they provide, I've come up with a shell script that should return all properties of the Win32_PerfFormattedData abstract base class.
Script:
$osClass = New-Object System.Management.ManagementClass Win32_PerfFormattedData
$osClass.Options.UseAmendedQualifiers = $true
# Get the Properties in the class
$properties = $osClass.Properties
"This class has {0} properties as follows:" -f $properties.count
# display the Property name, description, type, qualifiers and instance values
foreach ($property in $properties) {
"Property Name: {0}" -f $property.Name
"Description: {0}" -f $($property.Qualifiers["Description"].Value)
"Type: {0}" -f $property.Type
"-------"
}
(referenced from here)
The problem is that I'm only retrieving the properties from it's base class Win32_Perf
EDIT
After doing more research, I found this on MSDN:
The WMI formatted class name for a counter object is of the form "Win32_PerfFormattedData_service_name_object_name"
I am trying to get the service_name's that are in the Win32_PerfFormattedData and the object_name's within those services.
I'm unsure whether getting the properties is how I want to go about this now but I cannot find any documentation to get the services. Are they the same thing? And, if not, how can I get the info I require? (service_name's & object_name's)
I've also tried this in some C# code and get the same result:
ManagementClass processClass = new ManagementClass();
processClass.Path = new ManagementPath("Win32_PerfFormattedData");
PropertyDataCollection properties = processClass.Properties;
Console.WriteLine("\nProperties:");
foreach (PropertyData property in properties)
{
Console.WriteLine(property.Name);
}
And I tried retrieving the methods to check if that is what I wanted but nothing is returned:
Console.WriteLine("Methods: ");
foreach (MethodData method in methods)
{
Console.WriteLine(method.Name);
}
EDIT 2
Is there another way to retrieve this data? I've looked all through the MSDN documentation on the WMI and I think to get the information I want, I have to access that class (Win32_PerfFormattedData). Sorts of values I want to retrieve:
CPU
RAM
Drives (SSD/HDD)
Processes
OS
GPU
I've retrieved a few classes that will give basic information about some of these but will not provide up to date data on, for example, the temperature of each logical processor. I've managed to get 1 service from the class Win32_PerfFormattedData_PerfOS_Processor which provides the load % of each logical processor but that class must holds other services which I need.
Win32_PerfFormattedData_* classes are located under the "root\cimv2" namespace. To enumerate these classes (and get the service names) you run the following WQL query against that namespace:
SELECT * FROM meta_class WHERE __Class LIKE "Win32_PerfFormattedData%"
Actually you can omit the namespace (at least with ManagementObjectSearcher) in which case the search occurs everywhere. Here is how to search through WMI with C#:
void SearchWmi()
{
ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM meta_class WHERE __Class LIKE \"Win32_PerfFormattedData%\"");
foreach (ManagementClass wmiClass in searcher.Get())
{
Console.WriteLine(wmiClass["__CLASS"].ToString());
}
}
You need to add referece to System.Management as well as the corresponding using directive.
You could find performance data about the:
CPU: Win32_PerfFormattedData_Processor
RAM: Win32_PerfFormattedData_Memory
OS: Win32_PerfFormattedData_System
Drives: Win32_PerfFormattedData_PerfDisk_*
Processes: Win32_PerfFormattedData_PerfProc_*
I have no idea about the GPU. Most likely it is driver dependent.
There are numerous WMI explorer tools out there with a UI and all the good stuff. Have you tried some? I use the "WMI Explorer 2.0"
You can download it from here
I am working on a project that needs to enable/disable specific USB storage devices.
My app gets all storage USB DeviceIDs, and depending on saved settings then needs to allow the device or not. I have used the code from this previous question for the enable/disable, and call it like so:
DisableHardware.DisableDevice(n => n.ToUpperInvariant().Contains(VidPid), true);
with string VidPid = "VID_8564&PID_1000";.
I have stepped through the code, it all works perfectly (as far as I can tell) until the SetupDIChangeState call, which then returns -536870389 (E000020B as hex) as error code (from Marshall.GetLastWin32Error()).
Apparently this refers to either 1) the device not being present (which as far as I understand is not the case here, as all other calls in this class work fine, and I get `VidPid' from
private static List<WMUBClasses.USBDeviceInfo> GetUSBDevices()
{
try
{
List<WMUBClasses.USBDeviceInfo> tList = new List<WMUBClasses.USBDeviceInfo>();
ManagementObjectCollection collection;
using (var searcher = new ManagementObjectSearcher(#"SELECT * FROM Win32_USBHub"))
{
collection = searcher.Get();
}
foreach (var device in collection)
{
if (!device.GetPropertyValue("Description").ToString().Contains("Storage"))
{
continue;
}
tList.Add(new WMUBClasses.USBDeviceInfo(
(string)device.GetPropertyValue("DeviceID"),
(string)device.GetPropertyValue("PNPDeviceID"),
(string)device.GetPropertyValue("Description")
));
}
return tList;
}
catch (Exception ex)
{
return null;
}
}
or 2) an incorrect build platform, but I have tried all the different combinations (Any CPU, Mixed Platforms, x86 and x64), they all return the same result.
I have also looked at this which is another approach to my problem (by creating and using a kernel mode filter driver), it just seems like killing a fly with a wrecking ball. To be honest I have no clue of how to go about using this (for someone that hasn't done any driver development it looks super intimidating, especially after having read some of the available documentation.)
Should I (A) keep using the SetupDi API calls to achieve my goal and if so, can anyone see what is wrong with the code or how I am using it? If not (A), should I (B) use the filter driver approach instead and if so, any pointers?
As stated in the header, I want to disable specific USB storage devices, so as far as I understand, this precludes using the Registry to disable ALL USB storage devices. So if neither of the above, does anyone have any other direction I should be looking at instead?
If I right-click and choose Properties on a service (like, say, Plug and Play) in the Services dialog, I get several pieces of information, including "Path to executable". For Plug and Play (in Vista) this is:
C:\Windows\system32\svchost.exe -k DcomLaunch
Is there some way I can get this same piece of information using .NET code if I know the service name (and/or the display name)?
(I can't use GetExecutingAssembly() because I'm not running the service from my project.)
Another option, without the interop, would be a WMI lookup (or registry - bit hacky!).
Here's a quick example, based on this code:
private static string GetServiceImagePathWMI(string serviceDisplayName)
{
string query = string.Format("SELECT PathName FROM Win32_Service WHERE DisplayName = '{0}'", serviceDisplayName);
using (ManagementObjectSearcher search = new ManagementObjectSearcher(query))
{
foreach(ManagementObject service in search.Get())
{
return service["PathName"].ToString();
}
}
return string.Empty;
}
This information is in the QUERY_SERVICE_CONFIG structure. You will need to use P/Invoke to get it out.
The basic process is:
Call OpenSCManager to get a handle to the services managed.
Call OpenService to get a handle to the service.
Call QueryServiceConfig to get the QUERY_SERVICE_CONFIG structure.
There's always the WMI class Win32_Service as described here, specifically the PathName.
This works:
ManagementClass mc = new ManagementClass("Win32_Service");
foreach(ManagementObject mo in mc.GetInstances())
{
if(mo.GetPropertyValue("Name").ToString() == "<Short name of your service>")
{
return mo.GetPropertyValue("PathName").ToString().Trim('"');
}
}
If you have any issue related to Reference then add a reference of System.Management in your project.
How do I get the internal serial number of a USB-Stick or USB-HardDrive in C#?
Try this:
// add a reference to the System.Management assembly and
// import the System.Management namespace at the top in your "using" statement.
// Then in a method, or on a button click:
ManagementObjectSearcher theSearcher = new ManagementObjectSearcher("SELECT * FROM Win32_DiskDrive WHERE InterfaceType='USB'");
foreach (ManagementObject currentObject in theSearcher.Get())
{
ManagementObject theSerialNumberObjectQuery = new ManagementObject("Win32_PhysicalMedia.Tag='" + currentObject["DeviceID"] + "'");
MessageBox.Show(theSerialNumberObjectQuery["SerialNumber"].ToString());
}
Source: http://social.msdn.microsoft.com/forums/en-US/Vsexpressvcs/thread/f4447ed3-7e5f-4635-a28a-afff0b620156/
A solution using Win32 is described here
Edit: the original link seems to have gone missing. The above is a cached copy, and the author also wrote some sample code in VB.Net which is still online here.
I had problems with the solution offered by Yuval Adam as every USB stick I tried return blank on windows 7.
I solved this by just looking at the property PNPDeviceId on the current object.
E.g.
currentObject["PNPDeviceID"].ToString();
Not sure how valid this is but it worked for me on the 3 USB Sticks I tried