public string GetServiceDescription(string serviceName)
{
const int bufferSize = 1024 * 8;
IntPtr service = IntPtr.Zero;
IntPtr bufferPtr = IntPtr.Zero;
try
{
// Open the service
service = OpenService(serviceName, ServiceWin32Api.ServiceAccessRights.SERVICE_QUERY_CONFIG);
int dwBytesNeeded = 0;
// Allocate memory for struct
bufferPtr = Marshal.AllocHGlobal(bufferSize);
int queryResult = ServiceWin32Api.QueryServiceConfig2(
service,
ServiceWin32Api.ServiceConfig2InfoLevel.SERVICE_CONFIG_DESCRIPTION,
bufferPtr,
bufferSize,
out dwBytesNeeded);
if (queryResult == 0)
{
throw new Win32Exception(Marshal.GetLastWin32Error(), "Unable to query the Service configuration.");
}
// Cast the buffer to a SERVICE_DESCRIPTION struct
ServiceWin32Api.SERVICE_DESCRIPTION desc =
(ServiceWin32Api.SERVICE_DESCRIPTION)Marshal.PtrToStructure(bufferPtr, typeof(ServiceWin32Api.SERVICE_DESCRIPTION));
return(desc.lpDescription);
}
finally
{
// Clean up
if (bufferPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(bufferPtr);
}
if (service != IntPtr.Zero)
{
ServiceWin32Api.CloseServiceHandle(service);
}
}
}