Anyone Know How to Control The Windows by C#

[Atran]

Hello Everybody.
I want to know How to Control The Windows by C# Language Programming, that I can shutdown the Windows, or restart the windows, and more more controls programmed by C#, Can Anyone show me The Code.

Atran

[NVergunst]

Well I think your best bet would be the API world. You have to import external functions from a dll. For example to close a Windows application programmatically, you should import the functions

[DllImport("user32.dll")]
        public static extern int FindWindow(
        string lpClassName, // class name
        string lpWindowName // window name
        );
[DllImport("user32.dll")]
        public static extern int SendMessage(
        int hWnd, // handle to destination window
        uint Msg, // message
        int wParam, // first message parameter
        int lParam // second message parameter
        );

Findwindow gets the Window's handle of the window that has the close function, and then SendMessage sends these weird cryptic messages that can be anything from WM_CLOSE to a keypress simulation.

And for capturing the startup/shutdown of windows my guess is you have to find the appropriate function that is acpi triggered.

Is this the sort of thing you are wanting to do? I myself only just learned about using API calls successfully, so I may not be the best source, but at least it gives you some google search terms.

[Atran]

Thanks you.

[SammyB]

Hello Everybody.
I want to know How to Control The Windows by C# Language Programming, that I can shutdown the Windows, or restart the windows, and more more controls programmed by C#, Can Anyone show me The Code.

Atran

In .Net, you can also use Win32Shutdown. There is sample code at the very bottom of this page: http://www.craigmurphy.com/blog/?s=WMI
I'm going to try the code, but I better post first.

[SammyB]

That is scary code! No notices, no warnings, down-boy! Plus, the code is UGLY. I like the API solution better. You can even add the API solution as an Excel macro. I did it once, LOL!

I made several changes: straightened the quotes, qualified the enum, and commented that you must add a reference to System.Management:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Management;        // Must add a reference to System.Management in Solution Explorer
namespace ShutDown
{
    public partial class Form1 : Form
    {
        public enum ShutDown
        {
            LogOff = 0,
            Shutdown = 1,
            Reboot = 2,
            ForcedLogOff = 4,
            ForcedShutdown = 5,
            ForcedReboot = 6,
            PowerOff = 8,
            ForcedPowerOff = 12
        }
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            ManagementClass W32_OS = new ManagementClass("Win32_OperatingSystem");
            ManagementBaseObject inParams, outParams;
            int result;
            W32_OS.Scope.Options.EnablePrivileges = true;
            foreach (ManagementObject obj in W32_OS.GetInstances())
            {
                inParams = obj.GetMethodParameters("Win32Shutdown");
                inParams["Flags"] = ShutDown.ForcedShutdown;
                inParams["Reserved"] = 0;
                outParams = obj.InvokeMethod("Win32Shutdown", inParams, null);
                result = Convert.ToInt32(outParams["returnValue"]);
                if (result != 0) throw new Win32Exception(result);
            }
        }
    }
}