The GetSystemTimePreciseAsFileTime function retrieves the current system date and time with the highest possible level of precision (<1us). The retrieved information is in Coordinated Universal Time (UTC) format.

C# Signature:

[DllImport("kernel32.dll", SetLastError=true)]
static extern void GetSystemTimePreciseAsFileTime(LPFILETIME lpSystemTimeAsFileTime);

VB Signature:

Declare Sub GetSystemTimePreciseAsFileTime Lib "kernel32.dll" (LPFILETIME lpSystemTimeAsFileTime)

User-Defined Types:

FileTime

Alternative Managed API:

The .Net Core CLR uses this API in the implementation of DateTime.UtcNow. To my knowledge the .NET Framework does not

Notes:

None.

Tips & Tricks:

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Sample Code:

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Documentation

https://docs.microsoft.com/en-us/windows/desktop/api/sysinfoapi/nf-sysinfoapi-getsystemtimepreciseasfiletime

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