InstanceDataCollectionCollection.Keys 屬性

public:
 property System::Collections::ICollection ^ Keys { System::Collections::ICollection ^ get(); };

public System.Collections.ICollection Keys { get; }

member this.Keys : System.Collections.ICollection

Public ReadOnly Property Keys As ICollection

屬性值

一個 ICollection 代表一組物件專屬登錄鍵。

範例

以下程式碼範例利用 Keys 的 InstanceDataCollectionCollection 特性回傳一組計數器名稱，並將其轉換為 的 String陣列。 它會根據 屬性InstanceDataCollection產生一組Values物件陣列。 對於計數器名稱陣列中的每個元素，它會顯示該名稱並呼叫一個函式來處理對應 InstanceDataCollection的 。

// Process the InstanceDataCollectionCollection for this category.
PerformanceCounterCategory pcc = new PerformanceCounterCategory(categoryName);
InstanceDataCollectionCollection idColCol = pcc.ReadCategory();

ICollection idColColKeys = idColCol.Keys;
string[] idCCKeysArray = new string[idColColKeys.Count];
idColColKeys.CopyTo(idCCKeysArray, 0);

ICollection idColColValues = idColCol.Values;
InstanceDataCollection[] idCCValuesArray = new InstanceDataCollection[idColColValues.Count];
idColColValues.CopyTo(idCCValuesArray, 0);

Console.WriteLine("InstanceDataCollectionCollection for \"{0}\" " +
    "has {1} elements.", categoryName, idColCol.Count);

// Display the InstanceDataCollectionCollection Keys and Values.
// The Keys and Values collections have the same number of elements.
int index;
for(index=0; index<idCCKeysArray.Length; index++)
{
    Console.WriteLine("  Next InstanceDataCollectionCollection " +
        "Key is \"{0}\"", idCCKeysArray[index]);
    ProcessInstanceDataCollection(idCCValuesArray[index]);
}

' Process the InstanceDataCollectionCollection for this category.
Dim pcc As New PerformanceCounterCategory(categoryName)
Dim idColCol As InstanceDataCollectionCollection = pcc.ReadCategory()

Dim idColColKeys As ICollection = idColCol.Keys
Dim idCCKeysArray(idColColKeys.Count - 1) As String
idColColKeys.CopyTo(idCCKeysArray, 0)

Dim idColColValues As ICollection = idColCol.Values
Dim idCCValuesArray(idColColValues.Count - 1) As InstanceDataCollection
idColColValues.CopyTo(idCCValuesArray, 0)

Console.WriteLine("InstanceDataCollectionCollection for ""{0}"" " & _
    "has {1} elements.", categoryName, idColCol.Count)

' Display the InstanceDataCollectionCollection Keys and Values.
' The Keys and Values collections have the same number of elements.
Dim index As Integer
For index = 0 To idCCKeysArray.Length - 1
    Console.WriteLine("  Next InstanceDataCollectionCollection " & _
        "Key is ""{0}""", idCCKeysArray(index))
    ProcessInstanceDataCollection(idCCValuesArray(index))
Next index

備註

每個軟體元件在安裝時為其物件和計數器建立鍵值，執行時則寫入計數器資料。 你可以像存取其他登錄資料一樣存取這些資料。 然而，雖然你使用登錄系統來收集效能資料，但這些資料並未儲存在登錄資料庫中。 系統會從適當的系統物件管理器收集資料。