How to Lock Windows (like "Windows + L") from .NET?

Question

You can lock a Windows PC by pressing Windows + L.

How can I lock a Windows PC using VB.NET or C#?

A short example would be helpful.

[Related question](http://stackoverflow.com/questions/4259571/how-to-lock-the-screen-in-windows) in C/C++ — Deanna, Aug 06 '12 at 10:36

score 11 · Accepted Answer · answered Aug 04 '12 at 22:53

11

Call the LockWorkStation function using PInvoke.

answered Aug 04 '12 at 22:53

usr

Jainendra · Answer 2 · 2012-08-06T11:44:27.703

7

The following code can be used to Lock a Computer programmatically.

using System.Runtime.InteropServices;

[DllImport("user32.dll")]
public static extern void LockWorkStation();

edited Aug 06 '12 at 11:44

answered Aug 04 '12 at 23:01

Jainendra

1

`rundll32` is not designed to invoke arbitrary exported functions. – Neil Aug 04 '12 at 23:28

2 Answers2