Why Does SetInformationJobObject Fail with Error 24 or 87 in .NET's CreateJobObject Implementation?

Working example of CreateJobObject/SetInformationJobObject pinvoke in .net?

Problem:
In this example, the CreateJobObject/AssignProcessToJobObject functions appear to work correctly, but SetInformationJobObject consistently fails with error 24 or 87. Despite adjustments based on platform architecture and careful consideration of structure definitions, the underlying issue remains unsolved.

Solution:
The solution provided by Matt Howells, along with additional modifications and a custom Job class, offers a comprehensive solution that resolves the SetInformationJobObject failure.

Job Class Implementation:
The custom Job class includes methods for creating, closing, and assigning processes to the job. It utilizes PInvoke routines for interfacing with CreateJobObject, SetInformationJobObject, AssignProcessToJobObject, and other relevant functions.

Key Points:

• The JOBOBJECT_EXTENDED_LIMIT_INFORMATION structure incorporates the JOBOBJECT_BASIC_LIMIT_INFORMATION structure, enabling comprehensive job limit configuration.
• Extended information is successfully set using SetInformationJobObject.
• Detailed information and helper classes, such as IO_COUNTERS, SECURITY_ATTRIBUTES, and JobObjectInfoType, provide a granular understanding of job management concepts.

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