c# - WQL for REF properties: PowerShell vs C#

Question

The simple query works fine in PowerShell:

gwmi -Query "select * from Win32_DependentService where Antecedent='\\\\MYPC\\root\\cimv2:Win32_SystemDriver.Name=`"WdFilter`"'"

but it doesn't work in C#:

var scope = new ManagementScope("\\\\MYPC\\Root\\Cimv2");
scope.Connect();
var searcher = new ManagementObjectSearcher(scope, new ObjectQuery("select * from Win32_DependentService where Antecedent = '\\\\MYPC\\root\\cimv2:Win32_SystemDriver.Name=\"WdFilter\"'"));
ManagementObjectCollection queryCollection = searcher.Get();
var count = queryCollection.Count; // "Invalid query" exception here!!!

What is wrong with C# query? Thanks!

Answer 1

固定的！我们需要更多的反斜杠（最多八个！:)。正确的代码是：

var scope = new ManagementScope("\\\\MYPC\\Root\\Cimv2");
var searcher = new ManagementObjectSearcher(scope, new ObjectQuery("select * from Win32_DependentService where Antecedent='\\\\\\\\MYPC\\\\root\\\\cimv2:Win32_SystemDriver.Name=\"WdFilter\"'"));
var queryCollection = searcher.Get();
var count = queryCollection.Count; // it's OK now

希望它对其他人有帮助:)