PerformanceCounterCategory.GetCounters Método

public:
 cli::array <System::Diagnostics::PerformanceCounter ^> ^ GetCounters();

public System.Diagnostics.PerformanceCounter[] GetCounters();

member this.GetCounters : unit -> System.Diagnostics.PerformanceCounter[]

Public Function GetCounters () As PerformanceCounter()

Retornos

Uma matriz de PerformanceCounter objetos que indica os contadores associados a essa categoria de contador de desempenho de instância única.

Exceções

Exemplos

O exemplo de código a PerformanceCounter seguir obtém uma lista dos objetos em um PerformanceCounterCategory. Primeiro, ele cria um PerformanceCounterCategory construtor com o construtor apropriado, com base em se um nome de computador foi especificado. Em seguida, ele usa o GetCounters método para retornar uma matriz de PerformanceCounter objetos, selecionando a GetCounters sobrecarga com base em se um nome de instância foi especificado.

Essa GetCounters() sobrecarga falha, a menos que seja usada com uma categoria de instância única.

public static void Main(string[] args)
{
    string categoryName = "";
    string machineName = "";
    string instanceName = "";
    PerformanceCounterCategory pcc;
    PerformanceCounter[] counters;

    // Copy the supplied arguments into the local variables.
    try
    {
        categoryName = args[0];
        machineName = args[1]=="."? "": args[1];
        instanceName = args[2];
    }
    catch
    {
        // Ignore the exception from non-supplied arguments.
    }

    try
    {
        // Create the appropriate PerformanceCounterCategory object.
        if (machineName.Length>0)
        {
            pcc = new PerformanceCounterCategory(categoryName, machineName);
        }
        else
        {
            pcc = new PerformanceCounterCategory(categoryName);
        }

        // Get the counters for this instance or a single instance
        // of the selected category.
        if (instanceName.Length>0)
        {
            counters = pcc.GetCounters(instanceName);
        }
        else
        {
            counters = pcc.GetCounters();
        }
    }
    catch(Exception ex)
    {
        Console.WriteLine("Unable to get counter information for " +
            (instanceName.Length>0? "instance \"{2}\" in ": "single-instance ") +
            "category \"{0}\" on " + (machineName.Length>0? "computer \"{1}\":": "this computer:"),
            categoryName, machineName, instanceName);
        Console.WriteLine(ex.Message);
        return;
    }

    // Display the counter names if GetCounters was successful.
    if (counters!=null)
    {
        Console.WriteLine("These counters exist in " +
            (instanceName.Length>0? "instance \"{1}\" of": "single instance") +
            " category {0} on " + (machineName.Length>0? "computer \"{2}\":": "this computer:"),
            categoryName, instanceName, machineName);

        // Display a numbered list of the counter names.
        int objX;
        for(objX=0; objX<counters.Length; objX++)
        {
            Console.WriteLine("{0,4} - {1}", objX+1, counters[objX].CounterName);
        }
    }
}

Sub Main(ByVal args() As String)
    Dim categoryName As String = ""
    Dim machineName As String = ""
    Dim instanceName As String = ""
    Dim pcc As PerformanceCounterCategory
    Dim counters() As PerformanceCounter

    ' Copy the supplied arguments into the local variables.
    Try
        categoryName = args(0)
        machineName = IIf(args(1) = ".", "", args(1))
        instanceName = args(2)
    Catch ex As Exception
        ' Ignore the exception from non-supplied arguments.
    End Try

    Try
        ' Create the appropriate PerformanceCounterCategory object.
        If machineName.Length > 0 Then
            pcc = New PerformanceCounterCategory(categoryName, machineName)
        Else
            pcc = New PerformanceCounterCategory(categoryName)
        End If

        ' Get the counters for this instance or a single instance 
        ' of the selected category.
        If instanceName.Length > 0 Then
            counters = pcc.GetCounters(instanceName)
        Else
            counters = pcc.GetCounters()
        End If

    Catch ex As Exception
        Console.WriteLine("Unable to get counter information for " & _
            IIf(instanceName.Length > 0, "instance ""{2}"" in ", _
            "single-instance ") & "category ""{0}"" on " & _
            IIf(machineName.Length > 0, "computer ""{1}"":", _
            "this computer:"), _
            categoryName, machineName, instanceName)
        Console.WriteLine(ex.Message)
        Return
    End Try

    ' Display the counter names if GetCounters was successful.
    If Not counters Is Nothing Then
        Console.WriteLine("These counters exist in " & _
            IIf(instanceName.Length > 0, "instance ""{1}"" of", _
            "single instance") & " category {0} on " & _
            IIf(machineName.Length > 0, _
                "computer ""{2}"":", "this computer:"), _
            categoryName, instanceName, machineName)

        ' Display a numbered list of the counter names.
        Dim objX As Integer
        For objX = 0 To counters.Length - 1
            Console.WriteLine("{0,4} - {1}", objX + 1, _
                counters(objX).CounterName)
        Next objX
    End If
End Sub

Comentários

Para obter mais informações sobre instâncias de objeto de desempenho, consulte a visão geral da PerformanceCounter classe.

Confira também

• PerformanceCounter

public:
 cli::array <System::Diagnostics::PerformanceCounter ^> ^ GetCounters(System::String ^ instanceName);

public System.Diagnostics.PerformanceCounter[] GetCounters(string instanceName);

member this.GetCounters : string -> System.Diagnostics.PerformanceCounter[]

Public Function GetCounters (instanceName As String) As PerformanceCounter()

Parâmetros

Retornos

Uma matriz de PerformanceCounter objetos que indica os contadores associados à instância de objeto especificada dessa categoria de contador de desempenho.

Exceções

Exemplos

O exemplo de código a PerformanceCounter seguir obtém uma lista dos objetos em um PerformanceCounterCategory. Primeiro, ele cria um PerformanceCounterCategory construtor com o construtor apropriado, com base em se um nome de computador foi especificado. Em seguida, ele usa o GetCounters método para retornar uma matriz de PerformanceCounter objetos, selecionando a GetCounters sobrecarga com base em se um nome de instância foi especificado.

Essa GetCounters(String) sobrecarga falhará, a menos que seja usada com uma categoria que contenha instâncias.

public static void Main(string[] args)
{
    string categoryName = "";
    string machineName = "";
    string instanceName = "";
    PerformanceCounterCategory pcc;
    PerformanceCounter[] counters;

    // Copy the supplied arguments into the local variables.
    try
    {
        categoryName = args[0];
        machineName = args[1]=="."? "": args[1];
        instanceName = args[2];
    }
    catch
    {
        // Ignore the exception from non-supplied arguments.
    }

    try
    {
        // Create the appropriate PerformanceCounterCategory object.
        if (machineName.Length>0)
        {
            pcc = new PerformanceCounterCategory(categoryName, machineName);
        }
        else
        {
            pcc = new PerformanceCounterCategory(categoryName);
        }

        // Get the counters for this instance or a single instance
        // of the selected category.
        if (instanceName.Length>0)
        {
            counters = pcc.GetCounters(instanceName);
        }
        else
        {
            counters = pcc.GetCounters();
        }
    }
    catch(Exception ex)
    {
        Console.WriteLine("Unable to get counter information for " +
            (instanceName.Length>0? "instance \"{2}\" in ": "single-instance ") +
            "category \"{0}\" on " + (machineName.Length>0? "computer \"{1}\":": "this computer:"),
            categoryName, machineName, instanceName);
        Console.WriteLine(ex.Message);
        return;
    }

    // Display the counter names if GetCounters was successful.
    if (counters!=null)
    {
        Console.WriteLine("These counters exist in " +
            (instanceName.Length>0? "instance \"{1}\" of": "single instance") +
            " category {0} on " + (machineName.Length>0? "computer \"{2}\":": "this computer:"),
            categoryName, instanceName, machineName);

        // Display a numbered list of the counter names.
        int objX;
        for(objX=0; objX<counters.Length; objX++)
        {
            Console.WriteLine("{0,4} - {1}", objX+1, counters[objX].CounterName);
        }
    }
}

Sub Main(ByVal args() As String)
    Dim categoryName As String = ""
    Dim machineName As String = ""
    Dim instanceName As String = ""
    Dim pcc As PerformanceCounterCategory
    Dim counters() As PerformanceCounter

    ' Copy the supplied arguments into the local variables.
    Try
        categoryName = args(0)
        machineName = IIf(args(1) = ".", "", args(1))
        instanceName = args(2)
    Catch ex As Exception
        ' Ignore the exception from non-supplied arguments.
    End Try

    Try
        ' Create the appropriate PerformanceCounterCategory object.
        If machineName.Length > 0 Then
            pcc = New PerformanceCounterCategory(categoryName, machineName)
        Else
            pcc = New PerformanceCounterCategory(categoryName)
        End If

        ' Get the counters for this instance or a single instance 
        ' of the selected category.
        If instanceName.Length > 0 Then
            counters = pcc.GetCounters(instanceName)
        Else
            counters = pcc.GetCounters()
        End If

    Catch ex As Exception
        Console.WriteLine("Unable to get counter information for " & _
            IIf(instanceName.Length > 0, "instance ""{2}"" in ", _
            "single-instance ") & "category ""{0}"" on " & _
            IIf(machineName.Length > 0, "computer ""{1}"":", _
            "this computer:"), _
            categoryName, machineName, instanceName)
        Console.WriteLine(ex.Message)
        Return
    End Try

    ' Display the counter names if GetCounters was successful.
    If Not counters Is Nothing Then
        Console.WriteLine("These counters exist in " & _
            IIf(instanceName.Length > 0, "instance ""{1}"" of", _
            "single instance") & " category {0} on " & _
            IIf(machineName.Length > 0, _
                "computer ""{2}"":", "this computer:"), _
            categoryName, instanceName, machineName)

        ' Display a numbered list of the counter names.
        Dim objX As Integer
        For objX = 0 To counters.Length - 1
            Console.WriteLine("{0,4} - {1}", objX + 1, _
                counters(objX).CounterName)
        Next objX
    End If
End Sub

Comentários

Para representar uma categoria de instância única, passe uma cadeia de caracteres vazia ("") para o instanceName parâmetro.

Para obter mais informações sobre instâncias de objeto de desempenho, consulte a visão geral da PerformanceCounter classe.

Confira também

• PerformanceCounter