ICacheService.CheckExistsAsync Method
Definition
Important
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Overloads
| CheckExistsAsync(CacheItemKey, CancellationToken) |
Checks whether a value exists in the cache. |
| CheckExistsAsync(CacheItemKey, Boolean, CancellationToken) |
Checks whether a value exists in the cache. |
CheckExistsAsync(CacheItemKey, CancellationToken)
Checks whether a value exists in the cache.
public:
System::Threading::Tasks::Task<bool> ^ CheckExistsAsync(Microsoft::VisualStudio::RpcContracts::Caching::CacheItemKey key, System::Threading::CancellationToken cancellationToken);public System.Threading.Tasks.Task<bool> CheckExistsAsync (Microsoft.VisualStudio.RpcContracts.Caching.CacheItemKey key, System.Threading.CancellationToken cancellationToken);abstract member CheckExistsAsync : Microsoft.VisualStudio.RpcContracts.Caching.CacheItemKey * System.Threading.CancellationToken -> System.Threading.Tasks.Task<bool>Public Function CheckExistsAsync (key As CacheItemKey, cancellationToken As CancellationToken) As Task(Of Boolean)Parameters
- key
- CacheItemKey
The key of the value to access.
- cancellationToken
- CancellationToken
Cancellation token to monitor.
Returns
true if a value for these inputs exist; false otherwise.
Exceptions
Thrown if cancellationToken is cancelled.
Thrown if this instance has already been disposed.
Thrown when the operation cannot be completed due to a failure in cache storage access.
Remarks
When the service is acquired with the CacheService descriptor or later, this method will not detect values that were downloaded from another machine. Use the CheckExistsAsync(CacheItemKey, Boolean, CancellationToken) overload to allow or explicitly disallow sharing.
Applies to
CheckExistsAsync(CacheItemKey, Boolean, CancellationToken)
Checks whether a value exists in the cache.
public System.Threading.Tasks.Task<bool> CheckExistsAsync (Microsoft.VisualStudio.RpcContracts.Caching.CacheItemKey key, bool shareable, System.Threading.CancellationToken cancellationToken);abstract member CheckExistsAsync : Microsoft.VisualStudio.RpcContracts.Caching.CacheItemKey * bool * System.Threading.CancellationToken -> System.Threading.Tasks.Task<bool>Public Function CheckExistsAsync (key As CacheItemKey, shareable As Boolean, cancellationToken As CancellationToken) As Task(Of Boolean)Parameters
- key
- CacheItemKey
The key of the value to access.
- shareable
- Boolean
A value indicating whether the value is allowed or expected to have come from another machine.
- cancellationToken
- CancellationToken
Cancellation token to monitor.
Returns
true if a value for these inputs exist; false otherwise.
Exceptions
Thrown if cancellationToken is cancelled.
Thrown if this instance has already been disposed.
Thrown when the operation cannot be completed due to a failure in cache storage access.
Remarks
This method overload was added in Visual Studio 2022 Update 2.