private static bool GetIsProcessElevated()
{
if (SupportUserAccessControl)
{
if (!NativeMethods.OpenProcessToken(Process.GetCurrentProcess().Handle, TOKEN_READ, out IntPtr tokenHandle))
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
NativeMethods.TOKEN_ELEVATION_TYPE elevationResult = NativeMethods.TOKEN_ELEVATION_TYPE.TokenElevationTypeDefault;
int elevationResultSize = Marshal.SizeOf((int)elevationResult);
IntPtr elevationTypePtr = Marshal.AllocHGlobal(elevationResultSize);
bool success = NativeMethods.GetTokenInformation(tokenHandle, NativeMethods.TOKEN_INFORMATION_CLASS.TokenElevationType, elevationTypePtr, (uint)elevationResultSize, out uint _);
if (success)
{
elevationResult = (NativeMethods.TOKEN_ELEVATION_TYPE)Marshal.ReadInt32(elevationTypePtr);
bool isProcessAdmin = elevationResult == NativeMethods.TOKEN_ELEVATION_TYPE.TokenElevationTypeFull;
return(isProcessAdmin);
}
else
{
throw new InvalidOperationException(UnableToGetElevationMessage);
}
}
else
{
WindowsIdentity identity = WindowsIdentity.GetCurrent();
WindowsPrincipal principal = new WindowsPrincipal(identity);
bool result = principal.IsInRole(WindowsBuiltInRole.Administrator);
return(result);
}
}
public static bool CheckProcessElevated()
{
if (CheckUAC())
{
IntPtr tokenHandle = IntPtr.Zero;
if (!NativeMethods.OpenProcessToken(Process.GetCurrentProcess().Handle, NativeMethods.TOKEN_QUERY, out tokenHandle))
{
throw new Win32Exception(Marshal.GetLastWin32Error(), "Could not get process token.");
}
try
{
uint returnedSize = sizeof(NativeMethods.TOKEN_ELEVATION_TYPE);
IntPtr elevationTypePtr = Marshal.AllocHGlobal((int)returnedSize);
try
{
if (NativeMethods.GetTokenInformation(tokenHandle, NativeMethods.TOKEN_INFORMATION_CLASS.TokenElevationType, elevationTypePtr, returnedSize, out returnedSize))
{
NativeMethods.TOKEN_ELEVATION_TYPE elevationResult = (NativeMethods.TOKEN_ELEVATION_TYPE)Marshal.ReadInt32(elevationTypePtr);
switch (elevationResult)
{
case NativeMethods.TOKEN_ELEVATION_TYPE.TokenElevationTypeDefault:
//Token is not split; if user is admin, we're admin.
WindowsPrincipal principal = new WindowsPrincipal(WindowsIdentity.GetCurrent());
return(principal.IsInRole(WindowsBuiltInRole.Administrator) || principal.IsInRole(0x200)); //Domain Administrator
case NativeMethods.TOKEN_ELEVATION_TYPE.TokenElevationTypeFull:
//Token is split, but we're admin.
return(true);
case NativeMethods.TOKEN_ELEVATION_TYPE.TokenElevationTypeLimited:
//Token is split, and we're limited.
return(false);
default:
throw new Exception("Unknown elevation type!");
}
}
else
{
throw new ApplicationException("Unable to determine the current elevation.");
}
}
finally
{
if (elevationTypePtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(elevationTypePtr);
}
}
}
finally
{
if (tokenHandle != IntPtr.Zero)
{
NativeMethods.CloseHandle(tokenHandle);
}
}
}
else
{
WindowsPrincipal principal = new WindowsPrincipal(WindowsIdentity.GetCurrent());
return(principal.IsInRole(WindowsBuiltInRole.Administrator) || principal.IsInRole(0x200)); //Domain Administrator
}
}
