CacheExtensions.GetOrCreate 方法
定義
重要
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多載
GetOrCreate<TItem>(IMemoryCache, Object, Func<ICacheEntry,TItem>) |
如果索引鍵存在,則取得與這個索引鍵相關聯的值,或者如果找不到索引鍵,則從指定的處理站產生新的專案。 |
GetOrCreate<TItem>(IMemoryCache, Object, Func<ICacheEntry,TItem>, MemoryCacheEntryOptions) |
GetOrCreate<TItem>(IMemoryCache, Object, Func<ICacheEntry,TItem>)
如果索引鍵存在,則取得與這個索引鍵相關聯的值,或者如果找不到索引鍵,則從指定的處理站產生新的專案。
public:
generic <typename TItem>
[System::Runtime::CompilerServices::Extension]
static TItem GetOrCreate(Microsoft::Extensions::Caching::Memory::IMemoryCache ^ cache, System::Object ^ key, Func<Microsoft::Extensions::Caching::Memory::ICacheEntry ^, TItem> ^ factory);
public static TItem? GetOrCreate<TItem> (this Microsoft.Extensions.Caching.Memory.IMemoryCache cache, object key, Func<Microsoft.Extensions.Caching.Memory.ICacheEntry,TItem> factory);
static member GetOrCreate : Microsoft.Extensions.Caching.Memory.IMemoryCache * obj * Func<Microsoft.Extensions.Caching.Memory.ICacheEntry, 'Item> -> 'Item
<Extension()>
Public Function GetOrCreate(Of TItem) (cache As IMemoryCache, key As Object, factory As Func(Of ICacheEntry, TItem)) As TItem
類型參數
- TItem
要取得的物件類型。
參數
- cache
- IMemoryCache
這個 IMemoryCache 方法擴充的實例。
- key
- Object
要尋找或建立之專案的索引鍵。
- factory
- Func<ICacheEntry,TItem>
如果索引鍵不存在於快取中,則會建立與此索引鍵相關聯的值處理站。
傳回
TItem
與這個索引鍵相關聯的值。
適用於
GetOrCreate<TItem>(IMemoryCache, Object, Func<ICacheEntry,TItem>, MemoryCacheEntryOptions)
public:
generic <typename TItem>
[System::Runtime::CompilerServices::Extension]
static TItem GetOrCreate(Microsoft::Extensions::Caching::Memory::IMemoryCache ^ cache, System::Object ^ key, Func<Microsoft::Extensions::Caching::Memory::ICacheEntry ^, TItem> ^ factory, Microsoft::Extensions::Caching::Memory::MemoryCacheEntryOptions ^ createOptions);
public static TItem? GetOrCreate<TItem> (this Microsoft.Extensions.Caching.Memory.IMemoryCache cache, object key, Func<Microsoft.Extensions.Caching.Memory.ICacheEntry,TItem> factory, Microsoft.Extensions.Caching.Memory.MemoryCacheEntryOptions? createOptions);
static member GetOrCreate : Microsoft.Extensions.Caching.Memory.IMemoryCache * obj * Func<Microsoft.Extensions.Caching.Memory.ICacheEntry, 'Item> * Microsoft.Extensions.Caching.Memory.MemoryCacheEntryOptions -> 'Item
<Extension()>
Public Function GetOrCreate(Of TItem) (cache As IMemoryCache, key As Object, factory As Func(Of ICacheEntry, TItem), createOptions As MemoryCacheEntryOptions) As TItem
類型參數
- TItem
參數
- cache
- IMemoryCache
- key
- Object
- factory
- Func<ICacheEntry,TItem>
- createOptions
- MemoryCacheEntryOptions
傳回
TItem
適用於
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