Finding all Windows Services using WMI in C# .NET

In this post we saw how to retrieve all logical drives using Windows Management Instrumentation – WMI -, and here how to find all network adapters.

Say you’d like to get a list of all Windows Services and their properties running on the local – “root” – machine, i.e. read the services listed here:

Services window

The following code will find all non-null properties of all Windows services found:

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Listing all performance counters on Windows with C# .NET

Performance counters in Windows can help you with finding bottlenecks in your application. There’s a long range of built-in performance counters in Windows which you can view in the Performance Monitor window:

Performance Monitor window

Right-click anywhere on the larger screen to the right and select Add Counters to add your counters to the graph. The Add Counters window will show the categories first. You can then open a category and select one or more specific counters within that category. The graph will show the real-time data immediately:

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Reading the value of a performance counter on Windows with C# .NET

In this post we saw how to list all performance categories and the performance counters within each category. It’s equally straightforward to read the value of a performance counter. You’ll need at least the category and the name of the performance counter. If the counter is available in multiple instances then you’ll need to specify the instance name as well.

The following code will read the CPU usage and memory usage counters:

private static void ReadValuesOfPerformanceCounters()
{
	PerformanceCounter processorTimeCounter = new PerformanceCounter("Processor", "% Processor Time", "_Total");
	PerformanceCounter memoryUsage = new PerformanceCounter("Memory", "Available MBytes");			
	Console.WriteLine("CPU usage counter: ");
	Console.WriteLine("Category: {0}", processorTimeCounter.CategoryName);
	Console.WriteLine("Instance: {0}", processorTimeCounter.InstanceName);
	Console.WriteLine("Counter name: {0}", processorTimeCounter.CounterName);
	Console.WriteLine("Help text: {0}", processorTimeCounter.CounterHelp);
	Console.WriteLine("------------------------------");
	Console.WriteLine("Memory usage counter: ");
	Console.WriteLine("Category: {0}", memoryUsage.CategoryName);
	Console.WriteLine("Counter name: {0}", memoryUsage.CounterName);
	Console.WriteLine("Help text: {0}", memoryUsage.CounterHelp);
	Console.WriteLine("------------------------------");
	while (true)
	{
		Console.WriteLine("CPU value: {0}", processorTimeCounter.NextValue());
		Console.WriteLine("Memory value: {0}", memoryUsage.NextValue());
		Thread.Sleep(2000);
        }
}

Here’s an excerpt of the output:

Reading values of performance counters

You can view all posts related to Diagnostics here.

4 ways to enumerate processes on Windows with C# .NET

The Process object in the System.Diagnostics namespace refers to an operating-system process. This object is the entry point into enumerating the processes currently running on the OS.

This is how you can find the currently active process:

Process current = Process.GetCurrentProcess();
Console.WriteLine(current);

…which will yield the name of the process running this short test code.

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Creating and deleting event logs with C# .NET

The Windows event viewer contains a lot of useful information on what happens on the system:

Windows event viewer

Windows will by default write a lot of information here at differing levels: information, warning, failure, success and error. You can also write to the event log, create new logs and delete them if the code has the EventLogPermission permission. However, bear in mind that it’s quite resource intensive to write to the event logs. So don’t use it for general logging purposes to record what’s happening in your application. Use it to record major but infrequent events like shutdown, severe failure, start-up or any out-of-the-ordinary cases.

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Listing all performance counters on Windows with C# .NET

Performance counters in Windows can help you with finding bottlenecks in your application. There’s a long range of built-in performance counters in Windows which you can view in the Performance Monitor window:

Performance Monitor window

Right-click anywhere on the larger screen to the right and select Add Counters to add your counters to the graph. The Add Counters window will show the categories first. You can then open a category and select one or more specific counters within that category. The graph will show the real-time data immediately:

Read more of this post

4 ways to enumerate processes on Windows with C# .NET

The Process object in the System.Diagnostics namespace refers to an operating-system process. This object is the entry point into enumerating the processes currently running on the OS.

This is how you can find the currently active process:

Process current = Process.GetCurrentProcess();
Console.WriteLine(current);

…which will yield the name of the process running this short test code.

Read more of this post

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