TryGetValueDelegate 委托

定义

命名空间:

Microsoft.AspNetCore.Mvc.ViewFeatures

程序集:

Microsoft.AspNetCore.Mvc.ViewFeatures.dll

包:

Microsoft.AspNetCore.App.Ref v8.0.0

的 TryGetValue(TKey, TValue)委托。

public delegate bool TryGetValueDelegate(System::Object ^ dictionary, System::String ^ key, [Runtime::InteropServices::Out] System::Object ^ % value);

public delegate bool TryGetValueDelegate(object dictionary, string key, out object value);

type TryGetValueDelegate = delegate of obj * string * obj -> bool

Public Delegate Function TryGetValueDelegate(dictionary As Object, key As String, ByRef value As Object) As Boolean 

参数

dictionary

Object

IDictionary<TKey,TValue>。

key

String

键。

value

Object

返回值。

返回值

Boolean

是否已找到密钥。