PerformanceCounterCategory 构造函数

定义

命名空间:

System.Diagnostics

程序集:

System.Diagnostics.PerformanceCounter.dll

包:

System.Diagnostics.PerformanceCounter v9.0.0-rc.2.24473.5

初始化 PerformanceCounterCategory 类的新实例。

重载

PerformanceCounterCategory()	初始化 PerformanceCounterCategory 类的新实例，将 CategoryName 属性留空，并将 MachineName 属性设置为本地计算机。
PerformanceCounterCategory(String)	初始化 PerformanceCounterCategory 类的新实例，将 CategoryName 属性设置为指定值，并将 MachineName 属性设置为本地计算机。
PerformanceCounterCategory(String, String)	初始化 PerformanceCounterCategory 类的新实例，并将 CategoryName 和 MachineName 属性设置为指定的值。

PerformanceCounterCategory()

Source:

PerformanceCounterCategory.cs

初始化 PerformanceCounterCategory 类的新实例，将 CategoryName 属性留空，并将 MachineName 属性设置为本地计算机。

public:
 PerformanceCounterCategory();

public PerformanceCounterCategory ();

Public Sub New ()

示例

下面的代码示例接受命令行中的 PerformanceCounterCategory 名称和计算机名称。 它使用适用于提供的参数数的构造函数重载创建 PerformanceCounterCategory，然后显示其属性。

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

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

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

    // Display the properties of the PerformanceCounterCategory object.
    try
    {
        Console.WriteLine("  Category:  {0}", pcc.CategoryName);
        Console.WriteLine("  Computer:  {0}", pcc.MachineName);
        Console.WriteLine("  Help text: {0}", pcc.CategoryHelp);
    }
    catch(Exception ex)
    {
        Console.WriteLine("Error getting the properties of the " +
            "PerformanceCounterCategory object:");
        Console.WriteLine(ex.Message);
    }
}

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

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

    ' Create a PerformanceCounterCategory object using 
    ' the appropriate constructor.
    If categoryName.Length = 0 Then
        pcc = New PerformanceCounterCategory
    ElseIf machineName.Length = 0 Then
        pcc = New PerformanceCounterCategory(categoryName)
    Else
        pcc = New PerformanceCounterCategory(categoryName, machineName)
    End If

    ' Display the properties of the PerformanceCounterCategory object.
    Try
        Console.WriteLine("  Category:  {0}", pcc.CategoryName)
        Console.WriteLine("  Computer:  {0}", pcc.MachineName)
        Console.WriteLine("  Help text: {0}", pcc.CategoryHelp)
    Catch ex As Exception
        Console.WriteLine("Error getting the properties of the " & _
            "PerformanceCounterCategory object:")
        Console.WriteLine(ex.Message)
    End Try
End Sub

注解

必须先设置 CategoryName 属性，然后才能将此 PerformanceCounterCategory 实例与服务器上的性能对象相关联。 否则，将引发异常。

另请参阅

• CategoryName
• MachineName
• PerformanceCounter

PerformanceCounterCategory(String)

Source:

PerformanceCounterCategory.cs

初始化 PerformanceCounterCategory 类的新实例，将 CategoryName 属性设置为指定值，并将 MachineName 属性设置为本地计算机。

public:
 PerformanceCounterCategory(System::String ^ categoryName);

public PerformanceCounterCategory (string categoryName);

new System.Diagnostics.PerformanceCounterCategory : string -> System.Diagnostics.PerformanceCounterCategory

Public Sub New (categoryName As String)

参数

categoryName

String

要与此 PerformanceCounterCategory 实例关联的性能计数器类别或性能对象的名称。

例外

ArgumentException

categoryName 是空字符串（“）。

ArgumentNullException

categoryName null。

示例

下面的代码示例接受命令行中的 PerformanceCounterCategory 名称和计算机名称。 它使用适用于提供的参数数的构造函数重载创建 PerformanceCounterCategory，然后显示其属性。

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

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

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

    // Display the properties of the PerformanceCounterCategory object.
    try
    {
        Console.WriteLine("  Category:  {0}", pcc.CategoryName);
        Console.WriteLine("  Computer:  {0}", pcc.MachineName);
        Console.WriteLine("  Help text: {0}", pcc.CategoryHelp);
    }
    catch(Exception ex)
    {
        Console.WriteLine("Error getting the properties of the " +
            "PerformanceCounterCategory object:");
        Console.WriteLine(ex.Message);
    }
}

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

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

    ' Create a PerformanceCounterCategory object using 
    ' the appropriate constructor.
    If categoryName.Length = 0 Then
        pcc = New PerformanceCounterCategory
    ElseIf machineName.Length = 0 Then
        pcc = New PerformanceCounterCategory(categoryName)
    Else
        pcc = New PerformanceCounterCategory(categoryName, machineName)
    End If

    ' Display the properties of the PerformanceCounterCategory object.
    Try
        Console.WriteLine("  Category:  {0}", pcc.CategoryName)
        Console.WriteLine("  Computer:  {0}", pcc.MachineName)
        Console.WriteLine("  Help text: {0}", pcc.CategoryHelp)
    Catch ex As Exception
        Console.WriteLine("Error getting the properties of the " & _
            "PerformanceCounterCategory object:")
        Console.WriteLine(ex.Message)
    End Try
End Sub

另请参阅

• CategoryName
• MachineName
• PerformanceCounter

PerformanceCounterCategory(String, String)

Source:

PerformanceCounterCategory.cs

初始化 PerformanceCounterCategory 类的新实例，并将 CategoryName 和 MachineName 属性设置为指定的值。

public:
 PerformanceCounterCategory(System::String ^ categoryName, System::String ^ machineName);

public PerformanceCounterCategory (string categoryName, string machineName);

new System.Diagnostics.PerformanceCounterCategory : string * string -> System.Diagnostics.PerformanceCounterCategory

Public Sub New (categoryName As String, machineName As String)

参数

categoryName

String

要与此 PerformanceCounterCategory 实例关联的性能计数器类别或性能对象的名称。

machineName

String

性能计数器类别及其关联的计数器所在的计算机。

例外

ArgumentException

categoryName 是空字符串（“）。

-或-

machineName 语法无效。

ArgumentNullException

categoryName null。

示例

下面的代码示例接受命令行中的 PerformanceCounterCategory 名称和计算机名称。 它使用适用于提供的参数数的构造函数重载创建 PerformanceCounterCategory，然后显示其属性。

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

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

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

    // Display the properties of the PerformanceCounterCategory object.
    try
    {
        Console.WriteLine("  Category:  {0}", pcc.CategoryName);
        Console.WriteLine("  Computer:  {0}", pcc.MachineName);
        Console.WriteLine("  Help text: {0}", pcc.CategoryHelp);
    }
    catch(Exception ex)
    {
        Console.WriteLine("Error getting the properties of the " +
            "PerformanceCounterCategory object:");
        Console.WriteLine(ex.Message);
    }
}

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

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

    ' Create a PerformanceCounterCategory object using 
    ' the appropriate constructor.
    If categoryName.Length = 0 Then
        pcc = New PerformanceCounterCategory
    ElseIf machineName.Length = 0 Then
        pcc = New PerformanceCounterCategory(categoryName)
    Else
        pcc = New PerformanceCounterCategory(categoryName, machineName)
    End If

    ' Display the properties of the PerformanceCounterCategory object.
    Try
        Console.WriteLine("  Category:  {0}", pcc.CategoryName)
        Console.WriteLine("  Computer:  {0}", pcc.MachineName)
        Console.WriteLine("  Help text: {0}", pcc.CategoryHelp)
    Catch ex As Exception
        Console.WriteLine("Error getting the properties of the " & _
            "PerformanceCounterCategory object:")
        Console.WriteLine(ex.Message)
    End Try
End Sub

另请参阅

• CategoryName
• MachineName
• PerformanceCounter