I m getting same dpi value for 100 and 150? c# Windows appication on Windows 8 OS

Hi,

According to http://technet.microsoft.com/en-us/library/dn528846.aspx[^]
This API will always return 96 unless the tool that calls it is registered as DPI-aware.

You should mark your application DPI-aware.
you have 2 options to do so:

1.
add this xml to to your manifest file:

<asmv3:application xmlns:asmv3="#unknown">
    <asmv3:windowssettings xmlns=""http://schemas.microsoft.com/SMI/2005/WindowsSettings"">
      <dpiaware>Per monitor</dpiaware>
    </asmv3:windowssettings>
</asmv3:application>

2.
call `SetProcessDPIAware` function on your application.
information: http://msdn.microsoft.com/en-us/library/windows/desktop/ms633543%28v=vs.85%29.aspx[^]


hope it help...
:)