[SoapDocumentMethodAttribute(Action="getCounterInfo",
   RequestNamespace="karim.pth.ntu-kpi.kiev.ua",
   RequestElementName="getCounterInfo",
   ResponseNamespace="karim.pth.ntu-kpi.kiev.ua",
   ResponseElementName="getCounterInfoResponse")]
 [WebMethod(Description="Returns performance counter information")]
 public System.Diagnostics.PerformanceCounter getCounterInfo(string categoryName,
                   string counterName,
                   string instanceName)
 {
     System.Diagnostics.PerformanceCounter perfCounter
   = new System.Diagnostics.PerformanceCounter();
     perfCounter.CategoryName = categoryName;
     perfCounter.CounterName = counterName;
     perfCounter.InstanceName = instanceName;
     if (perfCounter.CounterType < 0)
     {
   // counter is not a valid counter
   throw new Exception("Counter Data Invalid!");
     }
     return perfCounter;
 }