RegistryProxy.PerformanceData Property


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Returns a RegistryKey type, which provides access to HKEY_PERFORMANCE_DATA.

Namespace:   Microsoft.VisualBasic.MyServices
Assembly:  Microsoft.VisualBasic (in Microsoft.VisualBasic.dll)

public RegistryKey PerformanceData { get; }

HKEY_PERFORMANCE_DATA is used to access performance information for software components. Each software component creates keys for its objects and counters when it is installed and writes counter data while it is executing. This data is not stored in the registry, although the registry is used to access it. Instead, calling registry functions via HKEY_PERFORMANCE_DATA causes the system to collect the data from the appropriate system object managers.

This key does not exist on Windows 98 systems; an attempt to use it other than calling the Name method will throw an IOException.

This key cannot normally be written to; attempting to create a subkey on it will throw an IOException.

The RegistryPermission class, which is in the System.Security.Permissions namespace, controls access to registry variables. Registry variables should not be stored in memory locations where code without RegistryPermission can access them. Similarly, when granting permissions, grant the fewest privileges necessary to get the job done.

Registry permission access values are defined by the RegistryPermissionAccess enumeration. The following table details its members.




Create, read, and write access to registry variables.


Create access to registry variables.


No access to registry variables.


Read access to registry variables.


Write access to registry variables.

The following table lists examples of tasks involving the My.Computer.Registry object.



Create a registry key and set its value

How to: Create a Registry Key and Set Its Value in Visual Basic

Delete a registry key

How to: Delete a Registry Key in Visual Basic

Read a value from a registry key

How to: Read a Value from a Registry Key in Visual Basic

This example gets the value ThisSoftware from the MyCompany subkey.


.NET Framework
Available since 2.0
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