CacheExtensions.GetOrCreate 方法

定義

命名空間:

Microsoft.Extensions.Caching.Memory

組件:

Microsoft.Extensions.Caching.Abstractions.dll

套件:

Microsoft.Extensions.Caching.Abstractions v9.0.0-preview.3.24172.9

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>)

來源:

MemoryCacheExtensions.cs

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。

GetOrCreate<TItem>(IMemoryCache, Object, Func<ICacheEntry,TItem>, MemoryCacheEntryOptions)

來源:

MemoryCacheExtensions.cs

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