c# - 如何构造 WMI 查询

Question

我想查找名称以 param1 开头并以 param2 结尾但我的代码不起作用的结果

string wmiQuery = string.Format("SELECT CommandLine FROM Win32_Process WHERE Name LIKE '{0}%' AND Name LIKE '%{1}'", param1, param2);
ManagementObjectSearcher searcher = new ManagementObjectSearcher(wmiQuery);
ManagementObjectCollection retObjectCollection = searcher.Get();

怎么了？

为了比较

string wmiQuery = string.Format("SELECT CommandLine FROM Win32_Process WHERE Name LIKE '{0}%'", param1);

效果很好

Answer 1

Try this:

string wmiQuery = string.Format("SELECT CommandLine FROM Win32_Process WHERE Name LIKE '{0}%{1}'", param1, param2);

Adding some test info:

string wmiQuery = string.Format ( "SELECT Name, ProcessID FROM Win32_Process WHERE Name LIKE '{0}%{1}'", "wpf", ".exe" );

Console.WriteLine ( "Query: {0}", wmiQuery );

ManagementObjectSearcher searcher = new ManagementObjectSearcher ( wmiQuery );
ManagementObjectCollection retObjectCollection = searcher.Get ( );

foreach (ManagementObject retObject in retObjectCollection)
{
    Console.WriteLine ( "[{0}]\tName: {1}", retObject[ "ProcessID" ], retObject["Name"] );
}

Output:

Query: SELECT Name, ProcessID FROM Win32_Process WHERE Name LIKE 'wpf%.exe'
[896] Name: WPFFontCache_v0400.exe

Answer 2

要构建 WMI 查询，请使用 Microsoft 提供的名为 WMI Code Creator 的免费工具，使用不同的编程语言 VBS、VB.NET、C#

从http://www.microsoft.com/downloads/en/details.aspx?familyid=2cc30a64-ea15-4661-8da4-55bbc145c30e&displaylang=en下载