How to get the CPU Usage in asp.net

Question

Is there a way to show CPU and RAM usage statistics on an asp.net page. I've tried this code but I have error:

Access to the registry key 'Global' is denied.

on this line:

ramCounter = new PerformanceCounter("Memory", "Available MBytes");

Answer 1

As mentioned in comments, without the appropriate permissions you will not be able to do this. Resource statistics will include a lot of information about processes owned by other users of the system which is privileged information

Answer 2

Use:

    System.Diagnostics.PerformanceCounter cpuUsage = 
      new System.Diagnostics.PerformanceCounter();
    cpuUsage.CategoryName = "Processor"; 
    cpuUsage.CounterName = "% Processor Time";
    cpuUsage.InstanceName = "_Total";

    float f = cpuUsage.NextValue();

Edit:

Windows limits access to the performance counters to those in the Administrators or Performance Logs Users (in Vista+) groups. Setting registry security won't resolve this. It is possible that there is a user right attached to it somewhere.