ManagementObjectSearcher WMI Guide

ManagementObjectSearcher is a class used for performing WMI queries. WMI (Windows Management Instrumentation) is a technology used for managing and monitoring the Windows operating system.

Here are the basic steps for using ManagementObjectSearcher:

1. Create a ManagementScope object to specify the scope of the WMI query, which can be resources on the local computer or on a remote computer.

ManagementScope scope = new ManagementScope("\\\\localhost\\root\\CIMV2");

1. Create a ManagementObjectSearcher object and specify the query statement to be executed. The query statement is an SQL statement used to select the WMI classes and properties to retrieve.

string query = "SELECT * FROM Win32_Process";
ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, new ObjectQuery(query));

1. Execute a query and retrieve the result set.

ManagementObjectCollection results = searcher.Get();

1. Iterate through the result set and process each result.

foreach (ManagementObject obj in results)
{
    // 处理每个结果
    string processName = obj["Name"].ToString();
    Console.WriteLine("Process Name: " + processName);
}

Before using ManagementObjectSearcher, it is necessary to reference the System.Management namespace and add a reference to System.Management.dll.

The above are basic steps using ManagementObjectSearcher, and depending on specific needs, different query statements and processing logic can be used to retrieve and handle WMI information.