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POC# .NET: How to check if we're running on battery?
 

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    <p>i want to be a good developer citizen, <a href="http://blogs.msdn.com/oldnewthing/archive/2005/08/22/454487.aspx" rel="nofollow noreferrer">pay my taxes</a>, and disable things if we're running over Remote Desktop, or running on battery.</p> <p>If we're running over remote desktop (or equivalently in a Terminal server session), we must disable animations and double-buffering. You can check this with:</p> <pre><code>/// &lt;summary&gt; /// Indicates if we're running in a remote desktop session. /// If we are, then you MUST disable animations and double buffering i.e. Pay your taxes! /// /// &lt;/summary&gt; /// &lt;returns&gt;&lt;/returns&gt; public static Boolean IsRemoteSession { //This is just a friendly wrapper around the built-in way get { return System.Windows.Forms.SystemInformation.TerminalServerSession; } } </code></pre> <p>Now i need to find out if the user is running on battery power. If they are, i don't want to blow through their battery. i want to do things such as</p> <ul> <li>disable animations</li> <li>disable background spell-checking</li> <li>disable background printing</li> <li>turn off gradients </li> <li>use <code>graphics.SmoothingMode = SmoothingMode.HighSpeed;</code> </li> <li>use <code>graphics.InterpolationMode = InterpolationMode.Low;</code></li> <li>use <code>graphics.CompositingQuality = CompositingQuality.HighSpeed;</code></li> <li>minimize hard drive access - to avoid spin up</li> <li>minimize network access - to save WiFi power</li> </ul> <p>Is there a managed way to see if the machine is <strong>currently</strong> running on battery?</p> <p><strong>References</strong></p> <p><a href="http://blogs.msdn.com/oldnewthing/archive/2005/08/22/454487.aspx" rel="nofollow noreferrer">How do you convince developers to pay their "taxes"?</a></p> <p><a href="http://blogs.msdn.com/oldnewthing/archive/2006/01/03/508694.aspx" rel="nofollow noreferrer">Taxes: Remote Desktop Connection and painting</a></p> <p><a href="http://msdn.microsoft.com/en-us/library/ms724385(VS.85).aspx" rel="nofollow noreferrer">GetSystemMetrics(SM_REMOTESESSION)</a></p>
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