C#

using System.Management;

ManagementBaseObject mboShutdown = null;
ManagementClass mcWin32 = new ManagementClass("Win32_OperatingSystem");
mcWin32.Get();
// You can't shutdown without security privileges
mcWin32.Scope.Options.EnablePrivileges = true;
ManagementBaseObject mboShutdownParams = mcWin32.GetMethodParameters("Win32Shutdown");
// Flag 1 means we want to shut down the system
mboShutdownParams["Flags"] = "1";
mboShutdownParams["Reserved"] = "0";
foreach (ManagementObject manObj in mcWin32.GetInstances())
    mboShutdown = manObj.InvokeMethod("Win32Shutdown", mboShutdownParams, null);

ManagementBaseObject mboShutdown = null;
ManagementClass mcWin32 = new ManagementClass("Win32_OperatingSystem");
mcWin32.Get();
// You can't shutdown without security privileges
mcWin32.Scope.Options.EnablePrivileges = true;
ManagementBaseObject mboShutdownParams = mcWin32.GetMethodParameters("Win32Shutdown");
// Flag 1 means we want to shut down the system
mboShutdownParams["Flags"] = "1";
mboShutdownParams["Reserved"] = "0";
foreach (ManagementObject manObj in mcWin32.GetInstances())
    mboShutdown = manObj.InvokeMethod("Win32Shutdown", mboShutdownParams, null);

string hostname=Dns.GetHostName();

IPHostEntry h=Dns.Resolve(hostname);

Console.WriteLine("IP addresses for "+hostname+":");

foreach (IPAddress ip in h.AddressList) {
    Console.WriteLine(ip);
}

Bitmap bitmap = new Bitmap(panel.Width, panel.Height); //create bitmap with size of the control
using (Graphics g = Graphics.FromImage(bitmap)){
//do your drawing stuff
}
panel.DrawImageUnscaled(b, 0, 0); //draw the bitmap onto the panel
bitmap.Save("C:\\test.bmp"); //save the bitmap or do anything you like

using (FileStream fs = File.Create(path))
File.Delete(path2);

string path = textbox1.text<br />
string path = textbox2.text