Question

我尝试使用找到here的示例代码，使用powershell创建一个简单的性能计数器。在最后一行，我用字符串替换变量：

[System.Diagnostics.PerformanceCounterCategory]::Create("catname", "catinfo", [Diagnostics.PerformanceCounterCategoryType]::SingleInstance, $CounterCollection);

当我运行脚本时，我收到以下错误：

Exception calling "Create" with "4" argument(s): "Input string was not in a correct format."
At C:\...\setup_test.ps1:9 char:56
+ [System.Diagnostics.PerformanceCounterCategory]::Create <<<< ("catname", "catfaszom",     [Diagnostics.PerformanceCounterCategoryType]::SingleInstance, $CounterCollection); 
+ CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
+ FullyQualifiedErrorId : DotNetMethodException

我用

打印了一些额外的信息

$error[0]|format-list -force

其他结果是：

Exception             : System.Management.Automation.MethodInvocationException: Exception calling "Create" with "4" argument(s): "Input string was not in a correct format." ---> System.FormatException: Input string was not in a correct format.
                       at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
                       at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
                       at System.Diagnostics.PerformanceCounterLib.GetStringTable(Boolean isHelp)
                       at System.Diagnostics.PerformanceCounterLib.get_NameTable()
                       at System.Diagnostics.PerformanceCounterLib.get_CategoryTable()
                       at System.Diagnostics.PerformanceCounterLib.CategoryExists(String machine, String category)
                       at System.Diagnostics.PerformanceCounterCategory.Create(String categoryName, String categoryHelp, PerformanceCounterCategoryType categoryType, CounterCreationDataCollection counterData)
                       at Create(Object , Object[] )
                       at System.Management.Automation.DotNetAdapter.AuxiliaryMethodInvoke(Object target, Object[] arguments, MethodInformation methodInformation, Object[] originalArguments)
                       --- End of inner exception stack trace ---
                       at System.Management.Automation.DotNetAdapter.AuxiliaryMethodInvoke(Object target, Object[] arguments, MethodInformation methodInformation, Object[] originalArguments)
                       at System.Management.Automation.ParserOps.CallMethod(Token token, Object target, String methodName, Object[] paramArray, Boolean callStatic, Object valueToSet)
                       at System.Management.Automation.MethodCallNode.InvokeMethod(Object target, Object[] arguments, Object value)
                       at System.Management.Automation.MethodCallNode.Execute(Array input, Pipe outputPipe, ExecutionContext context)
                       at System.Management.Automation.ParseTreeNode.Execute(Array input, Pipe outputPipe, ArrayList& resultList, ExecutionContext context)
                       at System.Management.Automation.StatementListNode.ExecuteStatement(ParseTreeNode statement, Array input, Pipe outputPipe, ArrayList& resultList, ExecutionContext context)
TargetObject          : 
CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
FullyQualifiedErrorId : DotNetMethodException
ErrorDetails          : 
InvocationInfo        : System.Management.Automation.InvocationInfo
PipelineIterationInfo : {}
PSMessageDetails      :

我的代码有什么问题？

更新

整个代码：

$ccdTypeName = 'System.Diagnostics.CounterCreationData'
$CounterCollection = New-Object System.Diagnostics.CounterCreationDataCollection

#create as many counters as we'd like, and add them to the collection. here's just one:
$CounterCollection.Add( (New-Object $ccdTypeName "TestCtr1", "Test counter 1 description", NumberOfItems32) )

#create the category with the counter collection
[System.Diagnostics.PerformanceCounterCategory]::Create("asd", "dasd", [Diagnostics.PerformanceCounterCategoryType]::SingleInstance, $CounterCollection);
$error[0]|format-list -force

我试图在另一台电脑上运行它，它没有任何错误。

Answer 1

我找到了解决方案。它与输入字符串无关。首先，我将powershell从2.0更新到3.0，然后我得到了正确的例外：

InvalidOperationException: Cannot load Counter Name data because an invalid index '' was read from the registry.

谷歌（this）的第一个结果解决了我的问题。打开管理员命令提示符并键入lodctr /r后，我的脚本没有任何问题。

输入字符串格式不正确

1 个答案: