WindowsImpersonationContext : Windows Principal « Windows « C# / C Sharp

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C# / C Sharp » Windows » Windows PrincipalScreenshots 
WindowsImpersonationContext

using System;
using System.IO;
using System.Security.Principal;
using System.Security.Permissions;
using System.Runtime.InteropServices;

[assembly: SecurityPermission(SecurityAction.RequestMinimum, UnmanagedCode = true, ControlPrincipal = true)]

class MainClass {
    const int LOGON32_PROVIDER_DEFAULT = 0;
    const int LOGON32_LOGON_INTERACTIVE = 2;

    [DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
    static extern bool LogonUser(string userName, string domain,
        string password, int logonType, int logonProvider,
        ref IntPtr accessToken);

    public static void Main(string[] args) {
        IntPtr accessToken = IntPtr.Zero;

        bool success = LogonUser(
            args[0],                    // username to log on.
            ".",                         // use the local account database.
            args[1],                    // user's password.
            LOGON32_LOGON_INTERACTIVE,  // create an interactive login.
            LOGON32_PROVIDER_DEFAULT,    // use the default logon provider.
            ref accessToken             // receives access token handle.
        );

        if (!success) {
            Console.WriteLine("LogonUser returned error {0}",
               Marshal.GetLastWin32Error());
        else {
            WindowsIdentity identity = new WindowsIdentity(accessToken);
            Console.WriteLine(WindowsIdentity.GetCurrent().Name);
            WindowsImpersonationContext impContext = identity.Impersonate();
            Console.WriteLine(WindowsIdentity.GetCurrent().Name);

            impContext.Undo();

            Console.WriteLine(WindowsIdentity.GetCurrent().Name);
        }
    }
}
           
       
Related examples in the same category
1.Use Properties of WindowsPrincipal
2.WindowsPrincipal.IsInRole
3.Get Current Windows Identity
4.WindowsBuiltInRole.Administrator
5.WindowsPrincipal Enables You to Check for Role MembershipWindowsPrincipal Enables You to Check for Role Membership
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