本文整理汇总了VB.NET中System.Diagnostics.PerformanceCounterCategory.CounterExists方法的典型用法代码示例。如果您正苦于以下问题：VB.NET PerformanceCounterCategory.CounterExists方法的具体用法？VB.NET PerformanceCounterCategory.CounterExists怎么用？VB.NET PerformanceCounterCategory.CounterExists使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Diagnostics.PerformanceCounterCategory的用法示例。
在下文中一共展示了PerformanceCounterCategory.CounterExists方法的2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)
Dim categoryName As String = ""
Dim counterName As String = ""
Dim machineName As String = ""
Dim objectExists As Boolean = False
Dim pcc As PerformanceCounterCategory
' Copy the supplied arguments into the local variables.
Try
categoryName = args(0)
counterName = args(1)
machineName = IIf(args(2) = ".", "", args(2))
Catch ex As Exception
' Ignore the exception from non-supplied arguments.
End Try
Try
If machineName.Length = 0 Then
pcc = New PerformanceCounterCategory(categoryName)
Else
pcc = New PerformanceCounterCategory(categoryName, machineName)
End If
' Check whether the specified counter exists.
' Use the per-instance overload of CounterExists.
objectExists = pcc.CounterExists(counterName)
Catch ex As Exception
Console.WriteLine("Unable to check for the existence of " & _
"counter ""{0}"" in category ""{1}"" on " & _
IIf(machineName.Length > 0, _
"computer ""{2}"".", "this computer.") & vbCrLf & _
ex.Message, counterName, categoryName, machineName)
Return
End Try
' Tell the user whether the counter exists.
Console.WriteLine("Counter ""{0}"" " & _
IIf(objectExists, "exists", "does not exist") & _
" in category ""{1}"" on " & _
IIf(machineName.Length > 0, _
"computer ""{2}"".", "this computer."), _
counterName, pcc.CategoryName, pcc.MachineName)
End Sub示例2: Main
Sub Main(ByVal args() As String)
Dim categoryName As String = ""
Dim counterName As String = ""
Dim machineName As String = ""
Dim objectExists As Boolean = False
' Copy the supplied arguments into the local variables.
Try
categoryName = args(0)
counterName = args(1)
machineName = IIf(args(2) = ".", "", args(2))
Catch ex As Exception
' Ignore the exception from non-supplied arguments.
End Try
Try
' Check whether the specified counter exists.
' Use the static forms of the CounterExists method.
If machineName.Length = 0 Then
objectExists = PerformanceCounterCategory.CounterExists( _
counterName, categoryName)
Else
objectExists = PerformanceCounterCategory.CounterExists( _
counterName, categoryName, machineName)
End If
Catch ex As Exception
Console.WriteLine("Unable to check for the existence of " & _
"counter ""{0}"" in category ""{1}"" on " & _
IIf(machineName.Length > 0, _
"computer ""{2}"".", "this computer.") & vbCrLf & _
ex.Message, counterName, categoryName, machineName)
Return
End Try
' Tell the user whether the counter exists.
Console.WriteLine("Counter ""{0}"" " & _
IIf(objectExists, "exists", "does not exist") & _
" in category ""{1}"" on " & _
IIf(machineName.Length > 0, _
"computer ""{2}"".", "this computer."), _
counterName, categoryName, machineName)
End Sub