Dictionary<TKey,TValue>.Values 属性

定义

命名空间:

System.Collections.Generic

程序集:

System.Collections.dll

Source:

Dictionary.cs

获得一个包含 Dictionary<TKey,TValue> 中的值的集合。

public:
 property System::Collections::Generic::Dictionary<TKey, TValue>::ValueCollection ^ Values { System::Collections::Generic::Dictionary<TKey, TValue>::ValueCollection ^ get(); };

public System.Collections.Generic.Dictionary<TKey,TValue>.ValueCollection Values { get; }

member this.Values : System.Collections.Generic.Dictionary<'Key, 'Value>.ValueCollection

Public ReadOnly Property Values As Dictionary(Of TKey, TValue).ValueCollection

属性值

Dictionary<TKey,TValue>.ValueCollection

一个 Dictionary<TKey,TValue>.ValueCollection，包含 Dictionary<TKey,TValue> 中的值。

示例

此代码示例演示如何使用 Values 属性枚举字典中的值，以及如何枚举字典中的键和值。

此代码示例是为 Dictionary<TKey,TValue> 类提供的更大示例的一部分， (openWith 是此示例中使用的字典的名称) 。

// To get the values alone, use the Values property.
Dictionary<String^, String^>::ValueCollection^ valueColl =
    openWith->Values;

// The elements of the ValueCollection are strongly typed
// with the type that was specified for dictionary values.
Console::WriteLine();
for each( String^ s in valueColl )
{
    Console::WriteLine("Value = {0}", s);
}

// To get the values alone, use the Values property.
Dictionary<string, string>.ValueCollection valueColl =
    openWith.Values;

// The elements of the ValueCollection are strongly typed
// with the type that was specified for dictionary values.
Console.WriteLine();
foreach( string s in valueColl )
{
    Console.WriteLine("Value = {0}", s);
}

' To get the values alone, use the Values property.
Dim valueColl As _
    Dictionary(Of String, String).ValueCollection = _
    openWith.Values

' The elements of the ValueCollection are strongly typed
' with the type that was specified for dictionary values.
Console.WriteLine()
For Each s As String In  valueColl
    Console.WriteLine("Value = {0}", s)
Next s

// 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

注解

Dictionary<TKey,TValue>.ValueCollection 中的值的顺序未指定，但与 Dictionary<TKey,TValue>.KeyCollection 属性返回的 Keys 中的关联键顺序相同。

返回的 Dictionary<TKey,TValue>.ValueCollection 不是静态副本;相反， Dictionary<TKey,TValue>.ValueCollection 引用回原始 Dictionary<TKey,TValue>中的值。 因此，对 Dictionary<TKey,TValue> 的更改将继续反映在 中 Dictionary<TKey,TValue>.ValueCollection。

获取此属性的值是 O (1) 操作。

另请参阅

• Dictionary<TKey,TValue>.ValueCollection
• Keys