InstanceData Class

Definition

Namespace:

System.Diagnostics

Assembly:

System.Diagnostics.PerformanceCounter.dll

Holds instance data associated with a performance counter sample.

public ref class InstanceData

public class InstanceData

type InstanceData = class

Public Class InstanceData

Inheritance

Object

InstanceData

Examples

The following code example displays the contents of the InstanceData objects that exist in a particular PerformanceCounterCategory on the local computer. It first displays a numbered list of PerformanceCounter categories. After the user enters the number of one of the categories, the sample displays, for each PerformanceCounter in the PerformanceCounterCategory, the instance data associated with each instance of the PerformanceCounter.

// InstanceData_CopyTo.cpp : main project file.
#using <System.dll>

using namespace System;
using namespace System::Diagnostics;


///////////////////////////////////////////////////////////////////////
//
// FORWARD DECLARATIONS
//
///////////////////////////////////////////////////////////////////////

// Console Utility Functions:
void InitConsole();                          // Init console size
void TitleBlock();                           // Write the title block
void CW(String^strText ,                    // Write a colored string
        String^ C = "", int LF = 1);


// InstanceData subroutines
// Display the contents of an InstanceData object.
void ProcessInstanceDataObject(String^ name, CounterSample CSRef);

// Display the contents of an InstanceDataCollection.
void ProcessInstanceDataCollection(InstanceDataCollection^ idCol);




///////////////////////////////////////////////////////////////////////
//
// MAIN PROGRAM
//
///////////////////////////////////////////////////////////////////////

void main()
{
    InitConsole();
    TitleBlock();

    String^ categoryName;
    String^ catNumStr;
    int      categoryNum;


    array<PerformanceCounterCategory^>^ categories =
                PerformanceCounterCategory::GetCategories();

    // Create and sort an array of category names.
    array<String^>^ categoryNames = gcnew array<String^>(categories->Length);
    int catX;
    for(catX=0; catX < categories->Length; catX++)
            categoryNames[catX] = categories[catX]->CategoryName;
    Array::Sort(categoryNames);

    while(1)
    {
    CW("These PerformanceCounterCategory categories are registered \n"
      +"on this computer:","Red");

    for(catX=0; catX < categories->Length; catX++)
            Console::WriteLine("{0,4} - {1}", catX+1, categoryNames[catX]);

    // Ask the user to choose a category.
    Console::Write("\nEnter a category number from the above list: ");
    catNumStr = Console::ReadLine();

    // Validate the entered category number.
    try {
        categoryNum = int::Parse(catNumStr);
        if (categoryNum < 1 || categoryNum > categories->Length)
            throw gcnew Exception(String::Format("The category number "+
                  " must be in the range 1..{0}.", categories->Length));
        categoryName = categoryNames[(categoryNum-1)];

        // Process the InstanceDataCollectionCollection for this category.
        PerformanceCounterCategory^ pcc =
             gcnew PerformanceCounterCategory(categoryName);
        InstanceDataCollectionCollection^ idColCol = pcc->ReadCategory();
        array<InstanceDataCollection^>^ idColArray =
             gcnew array<InstanceDataCollection^>(idColCol->Count);

        CW("\nInstanceDataCollectionCollection for \"" +categoryName+"\" "
           +"has "+idColCol->Count+" elements.","Blue");

        idColCol->CopyTo(idColArray, 0);

        for each ( InstanceDataCollection ^ idCol in idColArray )
                ProcessInstanceDataCollection(idCol);
        }
    catch(Exception^ ex)
        {
        Console::WriteLine("\"{0}\" is not a valid category number." +
            "\n{1}", catNumStr, ex->Message);
        }

    CW("\n\nRun again (Y,N)?","Yellow");
    catNumStr = Console::ReadLine();
    if ("Y" != catNumStr && "y" != catNumStr) break;
    }
}


///////////////////////////////////////////////////////////////////////
//
// SUBROUTINES
//
///////////////////////////////////////////////////////////////////////

void InitConsole() 
{
  Console::BufferHeight = 4000;
  Console::WindowHeight = 40;
}

void TitleBlock()
{
Console::Title = "InstDataCopyTo.cpp Sample";

CW(
 "///////////////////////////////////////////////////////////////////\n"
+"//\n"
+"//  PROGRAM   instdatacopyto.cpp\n"
+"//  PURPOSE   Show how to use InstanceData objects\n"
+"//  OUTPUT    1) Displays a numbered list of PerformanceCounter\n"
+"//               categories that exist on the local computer.\n"
+"//            2) Prompts the user to select a category.\n"
+"//            3) Displays the instance data associated with each\n"
+"//               instance of the PerformanceCounter in the\n"
+"//               selected PerformanceCounterCategory\n"
+"//\n"
+ "///////////////////////////////////////////////////////////////////\n"
,"Yellow");
}


// Utility function:  ConsoleWrite:  Write a colored string
void CW(String^ strText , String^ C, int LF)
{
   if (C != "") Console::ForegroundColor =  *dynamic_cast<ConsoleColor^>
                               (Enum::Parse(ConsoleColor::typeid, C));
   Console::Write(strText);
   Console::ResetColor();
   Console::Write("\n{0}",LF?"\n":"");
}

// Display the contents of an InstanceDataCollection.
void ProcessInstanceDataCollection(InstanceDataCollection ^ idCol)
{
    array<InstanceData^>^ instDataArray = gcnew array<InstanceData^>(idCol->Count);

    CW("\n  InstanceDataCollection for \""
       + idCol->CounterName + "\" has " + idCol->Count + " elements.", "Red");

    // Copy and process the InstanceData array.
    idCol->CopyTo(instDataArray, 0);

    int idX;
    for(idX=0; idX < instDataArray->Length; idX++)
        ProcessInstanceDataObject(instDataArray[idX]->InstanceName,
        instDataArray[idX]->Sample);
}


// Display the contents of an InstanceData object.
void ProcessInstanceDataObject(String ^ name, CounterSample CSRef)
{
    InstanceData ^ instData = gcnew InstanceData(name, CSRef);
    CW("    Data from InstanceData object:","Red",0);

    CW("      InstanceName:     "+instData->InstanceName,"Green",0);
    CW("      RawValue:         " + instData->RawValue);

    CounterSample sample = instData->Sample;
    Console::Write("    Data from CounterSample object:\n" +
        "      CounterType:      {0,-27} SystemFrequency:  {1}\n" +
        "      BaseValue:        {2,-27} RawValue:         {3}\n" +
        "      CounterFrequency: {4,-27} CounterTimeStamp: {5}\n" +
        "      TimeStamp:        {6,-27} TimeStamp100nSec: {7}\n\n",
        sample.CounterType, sample.SystemFrequency, sample.BaseValue,
        sample.RawValue, sample.CounterFrequency, sample.CounterTimeStamp,
        sample.TimeStamp, sample.TimeStamp100nSec);
}

using System;
using System.Diagnostics;

class InstDataCopyToMod
{

    private static string categoryName;

    public static void Main()
    {
        string catNumStr;
        int categoryNum;

        PerformanceCounterCategory[] categories = PerformanceCounterCategory.GetCategories();

        // Create and sort an array of category names.
        string[] categoryNames = new string[categories.Length];
        int catX;
        for(catX=0; catX<categories.Length; catX++)
        {
            categoryNames[catX] = categories[catX].CategoryName;
        }
        Array.Sort(categoryNames);

        Console.WriteLine("These categories are registered on this computer:");

        for(catX=0; catX<categories.Length; catX++)
        {
            Console.WriteLine("{0,4} - {1}", catX+1, categoryNames[catX]);
        }

        // Ask the user to choose a category.
        Console.Write("Enter the category number from the above list: ");
        catNumStr = Console.ReadLine();

        // Validate the entered category number.
        try
        {
            categoryNum = int.Parse(catNumStr);
            if (categoryNum<1||categoryNum>categories.Length)
            {
                throw new Exception(String.Format("The category number must be in the " +
                    "range 1..{0}.", categories.Length));
            }
            categoryName = categoryNames[(categoryNum-1)];
        }
        catch(Exception ex)
        {
            Console.WriteLine("\"{0}\" is not a valid category number." +
                "\r\n{1}", catNumStr, ex.Message);
            return;
        }

        // Process the InstanceDataCollectionCollection for this category.
        PerformanceCounterCategory pcc = new PerformanceCounterCategory(categoryName);
        InstanceDataCollectionCollection idColCol = pcc.ReadCategory();
        InstanceDataCollection[] idColArray = new InstanceDataCollection[idColCol.Count];

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

        // Copy and process the InstanceDataCollection array.
        idColCol.CopyTo(idColArray, 0);

        foreach ( InstanceDataCollection idCol in idColArray )
        {
            ProcessInstanceDataCollection(idCol);
        }
    }

    // Display the contents of an InstanceDataCollection.
    public static void ProcessInstanceDataCollection(InstanceDataCollection idCol)
    {

        InstanceData[] instDataArray = new InstanceData[idCol.Count];

        Console.WriteLine("  InstanceDataCollection for \"{0}\" " +
            "has {1} elements.", idCol.CounterName, idCol.Count);

        // Copy and process the InstanceData array.
        idCol.CopyTo(instDataArray, 0);

        int idX;
        for(idX=0; idX<instDataArray.Length; idX++)
        {
            ProcessInstanceDataObject(instDataArray[idX].InstanceName, instDataArray[idX].Sample);
        }
    }

    // Display the contents of an InstanceData object.
    public static void ProcessInstanceDataObject(string name, CounterSample CSRef)
    {

        InstanceData instData = new InstanceData(name, CSRef);
        Console.WriteLine("    Data from InstanceData object:\r\n" +
            "      InstanceName: {0,-31} RawValue: {1}", instData.InstanceName, instData.RawValue);

        CounterSample sample = instData.Sample;
        Console.WriteLine("    Data from CounterSample object:\r\n" +
            "      CounterType: {0,-32} SystemFrequency: {1}\r\n" +
            "      BaseValue: {2,-34} RawValue: {3}\r\n" +
            "      CounterFrequency: {4,-27} CounterTimeStamp: {5}\r\n" +
            "      TimeStamp: {6,-34} TimeStamp100nSec: {7}", sample.CounterType, sample.SystemFrequency, sample.BaseValue, sample.RawValue, sample.CounterFrequency, sample.CounterTimeStamp, sample.TimeStamp, sample.TimeStamp100nSec);
    }
}

Imports System.Diagnostics

Module InstDataCopyToMod

    Private categoryName As String

    Sub Main()
        Dim catNumStr As String
        Dim categoryNum As Integer

        Dim categories() As PerformanceCounterCategory = _
            PerformanceCounterCategory.GetCategories()

        ' Create and sort an array of category names.
        Dim categoryNames(categories.Length - 1) As String
        Dim catX As Integer
        For catX = 0 To categories.Length - 1
            categoryNames(catX) = categories(catX).CategoryName
        Next
        Array.Sort(categoryNames)

        Console.WriteLine( _
            "These categories are registered on this computer:")

        For catX = 0 To categories.Length - 1
            Console.WriteLine("{0,4} - {1}", catX + 1, _
                categoryNames(catX))
        Next catX

        ' Ask the user to choose a category.
        Console.Write( _
            "Enter the category number from the above list: ")
        catNumStr = Console.ReadLine()

        ' Validate the entered category number.
        Try
            categoryNum = Integer.Parse(catNumStr)
            If categoryNum < 1 Or categoryNum > categories.Length Then
                Throw New Exception( _
                    String.Format("The category number must be in the " & _
                        "range 1..{0}.", categories.Length))
            End If
            categoryName = categoryNames((categoryNum - 1))

        Catch ex As Exception
            Console.WriteLine("""{0}"" is not a valid category number." & _
                vbCrLf & "{1}", catNumStr, ex.Message)
            Return
        End Try

        ' Process the InstanceDataCollectionCollection for this category.
        Dim pcc As New PerformanceCounterCategory(categoryName)
        Dim idColCol As InstanceDataCollectionCollection = pcc.ReadCategory()
        Dim idColArray(idColCol.Count - 1) As InstanceDataCollection

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

        ' Copy and process the InstanceDataCollection array.
        idColCol.CopyTo(idColArray, 0)

        Dim idCol As InstanceDataCollection
        For Each idCol In idColArray
            ProcessInstanceDataCollection(idCol)
        Next idCol
    End Sub

    ' Display the contents of an InstanceDataCollection.
    Sub ProcessInstanceDataCollection(ByVal idCol As InstanceDataCollection)

        Dim instDataArray(idCol.Count - 1) As InstanceData

        Console.WriteLine("  InstanceDataCollection for ""{0}"" " & _
            "has {1} elements.", idCol.CounterName, idCol.Count)

        ' Copy and process the InstanceData array.
        idCol.CopyTo(instDataArray, 0)

        Dim idX As Integer
        For idX = 0 To instDataArray.Length - 1
            ProcessInstanceDataObject(instDataArray(idX).InstanceName, _
                instDataArray(idX).Sample)
        Next idX
    End Sub

    ' Display the contents of an InstanceData object.
    Sub ProcessInstanceDataObject(ByVal name As String, _
                                  ByVal CSRef As CounterSample)

        Dim instData As New InstanceData(name, CSRef)
        Console.WriteLine("    Data from InstanceData object:" & vbCrLf & _
            "      InstanceName: {0,-31} RawValue: {1}", _
            instData.InstanceName, instData.RawValue)

        Dim sample As CounterSample = instData.Sample
        Console.WriteLine("    Data from CounterSample object:" & vbCrLf & _
            "      CounterType: {0,-32} SystemFrequency: {1}" & vbCrLf & _
            "      BaseValue: {2,-34} RawValue: {3}" & vbCrLf & _
            "      CounterFrequency: {4,-27} CounterTimeStamp: {5}" & vbCrLf & _
            "      TimeStamp: {6,-34} TimeStamp100nSec: {7}", _
            sample.CounterType, sample.SystemFrequency, sample.BaseValue, _
            sample.RawValue, sample.CounterFrequency, sample.CounterTimeStamp, _
            sample.TimeStamp, sample.TimeStamp100nSec)
    End Sub
End Module

Constructors

InstanceData(String, CounterSample)

Initializes a new instance of the InstanceData class, using the specified sample and performance counter instance.

Properties

InstanceName	Gets the instance name associated with this instance data.
RawValue	Gets the raw data value associated with the performance counter sample.
Sample	Gets the performance counter sample that generated this data.

Methods

Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)