KeyValuePair<TKey,TValue>.Key 屬性

定義

命名空間:

System.Collections.Generic

組件:

System.Runtime.dll

組件:

mscorlib.dll

組件:

netstandard.dll

取得索引鍵/值組中的索引鍵。

public:
 property TKey Key { TKey get(); };

public TKey Key { get; }

member this.Key : 'Key

Public ReadOnly Property Key As TKey

屬性值

TKey

TKey，其為 KeyValuePair<TKey,TValue> 的索引鍵。

範例

下列程式碼範例示範如何使用 結構列舉字典 KeyValuePair<TKey,TValue> 中的索引鍵和值。

此程式碼是提供給 類別之較大範例的 Dictionary<TKey,TValue> 一部分。

// When you use foreach to enumerate dictionary elements,
// the elements are retrieved as KeyValuePair objects.
Console::WriteLine();
for each( KeyValuePair<String^, String^> kvp in openWith )
{
    Console::WriteLine("Key = {0}, Value = {1}",
        kvp.Key, kvp.Value);
}

// When you use foreach to enumerate dictionary elements,
// the elements are retrieved as KeyValuePair objects.
Console.WriteLine();
foreach( KeyValuePair<string, string> kvp in openWith )
{
    Console.WriteLine("Key = {0}, Value = {1}",
        kvp.Key, kvp.Value);
}

' When you use foreach to enumerate dictionary elements,
' the elements are retrieved as KeyValuePair objects.
Console.WriteLine()
For Each kvp As KeyValuePair(Of String, String) In openWith
    Console.WriteLine("Key = {0}, Value = {1}", _
        kvp.Key, kvp.Value)
Next kvp

備註

此屬性是唯讀的。