CounterCreationDataCollection.Contains(CounterCreationData) Method

Definition

Namespace:

System.Diagnostics

Assembly:

System.Diagnostics.PerformanceCounter.dll

Determines whether a CounterCreationData instance exists in the collection.

public:
 bool Contains(System::Diagnostics::CounterCreationData ^ value);

public bool Contains (System.Diagnostics.CounterCreationData value);

member this.Contains : System.Diagnostics.CounterCreationData -> bool

Public Function Contains (value As CounterCreationData) As Boolean

Parameters

value

CounterCreationData

The CounterCreationData object to find in the collection.

Returns

Boolean

true if the specified CounterCreationData object exists in the collection; otherwise, false.

Examples

The following example demonstrates how to use the Contains method to find a CounterCreationData object in a CounterCreationDataCollection.

String^ myCategoryName;
int numberOfCounters;
Console::Write( "Enter the category Name :" );
myCategoryName = Console::ReadLine();
// Check if the category already exists or not.
if (  !PerformanceCounterCategory::Exists( myCategoryName ) )
{
   Console::Write( "Enter the number of counters : " );
   numberOfCounters = Int32::Parse( Console::ReadLine() );
   array<CounterCreationData^>^ myCounterCreationData =
      gcnew array<CounterCreationData^>(numberOfCounters);
   for ( int i = 0; i < numberOfCounters; i++ )
   {
      Console::Write( "Enter the counter name for {0} counter : ", i );
      myCounterCreationData[ i ] = gcnew CounterCreationData;
      myCounterCreationData[ i ]->CounterName = Console::ReadLine();
   }
   CounterCreationDataCollection^ myCounterCollection =
      gcnew CounterCreationDataCollection;
   // Add the 'CounterCreationData[]' to 'CounterCollection'.
   myCounterCollection->AddRange( myCounterCreationData );

   PerformanceCounterCategory::Create( myCategoryName,
      "Sample Category", myCounterCollection );

   for ( int i = 0; i < numberOfCounters; i++ )
   {
      myCounter = gcnew PerformanceCounter( myCategoryName,
         myCounterCreationData[ i ]->CounterName, "", false );
   }
   if ( myCounterCreationData->Length > 0 )
   {
      if ( myCounterCollection->Contains( myCounterCreationData[ 0 ] ) )
      {
         myCounterCollection->Remove( myCounterCreationData[ 0 ] );
         Console::WriteLine( "'{0}' counter is removed from the" +
           " CounterCreationDataCollection", myCounterCreationData[ 0 ]->CounterName );
      }
   }
   else
   {
      Console::WriteLine( "The counters does not exist" );
   }
}
else
{
   Console::WriteLine( "The category already exists" );
}

string myCategoryName;
int numberOfCounters;
Console.Write("Enter the category Name :");
myCategoryName = Console.ReadLine();
// Check if the category already exists or not.
if (!PerformanceCounterCategory.Exists(myCategoryName))
{
    Console.Write("Enter the number of counters : ");
    numberOfCounters = int.Parse(Console.ReadLine());
    CounterCreationData[] myCounterCreationData =
       new CounterCreationData[numberOfCounters];
    for (int i = 0; i < numberOfCounters; i++)
    {
        Console.Write("Enter the counter name for {0} counter : ", i);
        myCounterCreationData[i] = new CounterCreationData();
        myCounterCreationData[i].CounterName = Console.ReadLine();
    }
    CounterCreationDataCollection myCounterCollection =
       new CounterCreationDataCollection();
    // Add the 'CounterCreationData[]' to 'CounterCollection'.
    myCounterCollection.AddRange(myCounterCreationData);

    PerformanceCounterCategory.Create(myCategoryName,
       "Sample Category",
    PerformanceCounterCategoryType.SingleInstance, myCounterCollection);

    if (myCounterCreationData.Length > 0)
    {
        if (myCounterCollection.Contains(myCounterCreationData[0]))
        {
            myCounterCollection.Remove(myCounterCreationData[0]);
            Console.WriteLine("'{0}' counter is removed from the " +
               "CounterCreationDataCollection", myCounterCreationData[0].CounterName);
        }
    }
    else
    {
        Console.WriteLine("The counters does not exist");
    }
}
else
{
    Console.WriteLine("The category already exists");
}

Dim myCategoryName As String
Dim numberOfCounters As Integer
Console.Write("Enter the category Name :")
myCategoryName = Console.ReadLine()
' Check if the category already exists or not.
If Not PerformanceCounterCategory.Exists(myCategoryName) Then
   Console.Write("Enter the number of counters : ")
   numberOfCounters = Integer.Parse(Console.ReadLine())
   Dim myCounterCreationData(numberOfCounters-1) As CounterCreationData
   Dim i As Integer
   For i = 0 To numberOfCounters - 1
      Console.Write("Enter the counter name for {0} counter : ", i)
      myCounterCreationData(i) = New CounterCreationData()
      myCounterCreationData(i).CounterName = Console.ReadLine()
   Next i
   Dim myCounterCollection As New CounterCreationDataCollection()
   ' Add the 'CounterCreationData[]' to 'CounterCollection'.
   myCounterCollection.AddRange(myCounterCreationData)

       PerformanceCounterCategory.Create(myCategoryName, "Sample Category", _
              PerformanceCounterCategoryType.SingleInstance, myCounterCollection)

   ' Remove an instance of 'CounterCreationData' from 'CounterCollection'.
   If myCounterCreationData.Length > 0 Then
      If myCounterCollection.Contains(myCounterCreationData(0)) Then
         myCounterCollection.Remove(myCounterCreationData(0))
         Console.WriteLine("'{0}' counter is removed from the " + _
                     "CounterCreationDataCollection", myCounterCreationData(0).CounterName)
      End If
   Else
      Console.WriteLine("The counters does not exist")
   End If
Else
   Console.WriteLine("The category already exists")
End If