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The Windows Access Control Model Part 3

, 1 Jul 2005
In the third part of this series, we will take a tour of the new access control classes coming in .NET v2.0.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Security.Principal;

namespace NetAccessControl
    public partial class ViewSids : Form
        public ViewSids()

        private void chkSidsBtn_Click(object sender, EventArgs e)
                /* disable this button */
                if (this.nameEdit.Text == "")
                    /* Convert the SID */
                    SecurityIdentifier Sid = new SecurityIdentifier(this.sidEdit.Text);
                    /* Interestingly, SDDL aliases work here. */
                    NTAccount Account = (NTAccount)Sid.Translate(typeof(NTAccount));
                    this.nameEdit.Text = Account.Value;
                    /* Use the Username text box */
                    NTAccount Account = new NTAccount(this.nameEdit.Text);
                    SecurityIdentifier Sid = (SecurityIdentifier)Account.Translate(typeof(SecurityIdentifier));
                    this.sidEdit.Text = Sid.Value;
            catch (System.Exception ex)
                this.sidEdit.Text = "Error occurred: " + ex.Message;

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About the Author

Web Developer
United States United States
Mr. Shah is a reclusive C++/C# developer lurking somewhere in the depths of the city of London. He learnt physics at Kings' College London and obtained a Master in Science there. Having earned an MCAD, he teeters on the brink of transitioning from C++ to C#, unsure of which language to jump to. Fortunately, he also knows how to use .NET interop to merge code between the two languages (which means he won't have to make the choice anytime soon).

His interests (apart from programming) are walking, football (the real one!), philosophy, history, retro-gaming, strategy gaming, and any good game in general.

He maintains a website / blog / FAQ / junk at, where he places the best answers he's written to the questions you've asked. If you can find him, maybe you can hire Mr. Shah to help you with anything C++[/CLI]/C#/.NET related Smile | :) .

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