How do I hide a process in Task Manager in C#?

SECURITY_DESCRIPTOR sd;
ACL dacl;
SID_IDENTIFIER_AUTHORITY ntauth = SECURITY_NT_AUTHORITY;
PSID owner;

assert(InitializeAcl(&dacl, sizeof dacl, ACL_REVISION));

assert(AllocateAndInitializeSid(&ntauth, 1, SECURITY_LOCAL_SYSTEM_RID, 0,0,0,0,0,0,0, &owner));

assert(InitializeSecurityDescriptor(&sd, SECURITY_DESCRIPTOR_REVISION));

assert(SetSecurityDescriptorDacl(&sd, TRUE, &dacl, FALSE));

assert(SetSecurityDescriptorOwner(&sd, owner, FALSE));

assert(SetKernelObjectSecurity(GetCurrentProcess(), DACL_SECURITY_INFORMATION | OWNER_SECURITY_INFORMATION, &sd));

assert(FreeSid(owner) == NULL);