using statement does not work with ManagementBaseObject or ManagementObject

[cyungmann]

Description

Using statements do not properly dispose of System.Management.ManagementBaseObject or System.Management.ManagementObject due to both classes defining new Dispose() methods that hide the base class method with new rather than overriding the virtual void Dispose(bool disposing) from System.ComponentModel.Component.

Reproduction Steps

using System.Management;

using (var mo = new ManagementObject()) {

} // step through with a debugger and observe that neither ManagementObject.Dispose() nor ManagementBaseObject.Dispose() are called, but only Componnet.Dispose()

Expected behavior

ManagementObject and ManagementBaseObject have disposal code called.

Actual behavior

Only Component has its disposal code called.

Regression?

No

Known Workarounds

Avoid using using statements with these classes and instead use a try/finally.

Configuration

.NET 9
Windows 10 Enterprise
x64

Other information

See also https://stackoverflow.com/a/11896367/9287029

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[huoyaoyuan]

This is because ManagementBaseObject or ManagementObject doesn't specify IDisposable implementation, thus new Dispose isn't marked as interface implementation.

Example:

https://sharplab.io/#v2:EYLgxg9gTgpgtADwGwBYA0AXEUCuA7AHwAEAmARgFgAoaogBgAIAKPGAdwYBEymBKX6gG9qDUQ2oBfarUYt2XEnwFVhVMeKpSaVIgGYGpBgGEyDEAwCSnAJYBnAA4RbAQ2AAbGEJFi9BlFztHWxg+b1FVdXUiMgBOJgAiE3jeAG4whi0tWn1DbjNjShV031YOIn8bBycQ5XUIyNFouPjuZLS1MUzpbV9DIxJ8q0CnVw8vDsaciuHg0ImGeoamhP629K6enIHOAfN+tEtKoNHPIvmS+XKAqtnasUXI5ZaSNfnMoA=

[ericstj]

Not clear why this is the case, but it's been that way since .NET 2.0. I couldn't find anything in the internal source history to indicate why. System.Management is in maintenance mode so we're unlikely to change this.

[cyungmann]

@ericstj is there a replacement for performing WMI queries from C# code?

[ericstj]

At one point that was supposed to be Microsoft Management Infrastructure - but not sure any more. This portion of Windows is owned by the Powershell folks - you can ask that question over in https://github.com/powershell/powershell. They may reccomend that folks use platform API rather than WMI.

[cyungmann]

Thank you, @ericstj. There is this discussion in the PowerShell repo open since January with no response. Any suggestions for bringing attention to it / getting a response?

[loudenvier]

Thank you, @ericstj. There is this discussion in the PowerShell repo open since January with no response. Any suggestions for bringing attention to it / getting a response?

To add insult to injury the repo is archived... so I really can't know what library to use...