本文整理汇总了VB.NET中System.Diagnostics.InstanceDataCollection.Item属性的典型用法代码示例。如果您正苦于以下问题：VB.NET InstanceDataCollection.Item属性的具体用法？VB.NET InstanceDataCollection.Item怎么用？VB.NET InstanceDataCollection.Item使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类System.Diagnostics.InstanceDataCollection的用法示例。
在下文中一共展示了InstanceDataCollection.Item属性的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: Main
Sub Main(ByVal args() As String)
' These values can be used as arguments.
Dim categoryName As String = "Process"
Dim counterName As String = "Private Bytes"
Dim instanceName As String = "Explorer"
Dim idCol As InstanceDataCollection
Const SINGLE_INSTANCE_NAME As String = _
"systemdiagnosticsperfcounterlibsingleinstance"
' Copy the supplied arguments into the local variables.
Try
categoryName = args(0)
counterName = args(1)
instanceName = args(2)
Catch ex As Exception
' Ignore the exception from non-supplied arguments.
End Try
Try
' Get the InstanceDataCollectionCollection for this category.
Dim pcc As New PerformanceCounterCategory(categoryName)
Dim idColCol As InstanceDataCollectionCollection = _
pcc.ReadCategory()
' Get the InstanceDataCollection for this counter.
idCol = idColCol(counterName)
If idCol Is Nothing Then
Throw New Exception("Counter does not exist.")
End If
Catch ex As Exception
Console.WriteLine( _
"An error occurred getting the InstanceDataCollection for " & _
"category ""{0}"", counter ""{1}""." & vbCrLf & ex.Message, _
categoryName, counterName)
Return
End Try
' If the instance name is empty, use the single-instance name.
If instanceName.Length = 0 Then
instanceName = SINGLE_INSTANCE_NAME
End If
' Check if this instance name exists using the Contains
' method of the InstanceDataCollection.
If Not idCol.Contains(instanceName) Then
Console.WriteLine( _
"Instance ""{0}"" does not exist in counter ""{1}"", " & _
"category ""{2}"".", instanceName, counterName, categoryName)
Return
Else
' The instance name exists, now get its InstanceData object
' using the indexer (Item property) for the InstanceDataCollection.
Dim instData As InstanceData = idCol(instanceName)
Console.WriteLine("CategoryName: {0}", categoryName)
Console.WriteLine("CounterName: {0}", counterName)
Console.WriteLine("InstanceName: {0}", instData.InstanceName)
Console.WriteLine("RawValue: {0}", instData.RawValue)
End If
End Sub