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Sign inSemaphoreAcl.OpenExisting(String, SemaphoreRights) Method
Definition
Important
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Opens a specified named semaphore, if it already exists, and applies the desired access rights.
public:
static System::Threading::Semaphore ^ OpenExisting(System::String ^ name, System::Security::AccessControl::SemaphoreRights rights);C#
public static System.Threading.Semaphore OpenExisting(string name, System.Security.AccessControl.SemaphoreRights rights);static member OpenExisting : string * System.Security.AccessControl.SemaphoreRights -> System.Threading.SemaphorePublic Shared Function OpenExisting (name As String, rights As SemaphoreRights) As Semaphore- name
- String
The name of the semaphore to be opened. If it's prefixed by "Global", it refers to a machine-wide semaphore. If it's prefixed by "Local", or doesn't have a prefix, it refers to a session-wide semaphore. Both prefix and name are case-sensitive.
- rights
- SemaphoreRights
The desired access rights to apply to the returned semaphore.
An existing named semaphore.
name is null.
name is an empty string.
The named semaphore does not exist or is invalid.
The named semaphore exists, but the user does not have the security access required to use it.
Applies to
| Product | Versions |
|---|---|
| .NET | 8 (package-provided), 9 (package-provided), 10 (package-provided) |
| .NET Framework | 4.6.2 (package-provided), 4.7 (package-provided), 4.7.1 (package-provided), 4.7.2 (package-provided), 4.8 (package-provided) |
| .NET Standard | 2.0 (package-provided) |
| Windows Desktop | 6, 7, 8, 9, 10 |