This sample code can sense current context in Active Directory, checks for the existence of attributes, provides a list of all the attributes in Active Directory and can add a user to Active Directory.
public void AddUser(){string strDomain="";String RootDSE;System.DirectoryServices.DirectorySearcher DSESearcher = new System.DirectoryServices.DirectorySearcher();RootDSE=DSESearcher.SearchRoot.Path;MessageBox.Show(RootDSE);RootDSE=RootDSE.Insert(7,"CN=Users,");MessageBox.Show(RootDSE);MessageBox.Show(strDomain);DirectoryEntry myDE = new DirectoryEntry(RootDSE);DirectoryEntries myEntries = myDE.Children;// Create a new entry 'Sample' in the container.DirectoryEntry myDirectoryEntry = myEntries.Add("CN="+txtUserName.Text, "user");MessageBox.Show(myDirectoryEntry.SchemaClassName.ToString());myDirectoryEntry.Properties["userPrincipalName"].Value=txtPrincipal.Text;myDirectoryEntry.Properties["name"].Value=txtUserName.Text;myDirectoryEntry.Properties["samAccountName"].Value=txtUserName.Text;myDirectoryEntry.CommitChanges();}private void button2_Click(object sender, System.EventArgs e){String RootDSE;System.DirectoryServices.DirectorySearcher DSESearcher = new System.DirectoryServices.DirectorySearcher();RootDSE=DSESearcher.SearchRoot.Path;MessageBox.Show("Searching for user Class in "+RootDSE);DirectoryEntry entry = new DirectoryEntry(RootDSE);System.DirectoryServices.DirectorySearcher mySearcher = new System.DirectoryServices.DirectorySearcher(entry);mySearcher.Filter = ("(ObjectClass=user)");System.DirectoryServices.SearchResult resEnt=mySearcher.FindOne();entry=resEnt.GetDirectoryEntry();MessageBox.Show("Entry Of attribute found = " + entry.Properties.Contains(txtAtt.Text).ToString());}private void button3_Click(object sender, System.EventArgs e){String RootDSE;System.DirectoryServices.DirectorySearcher DSESearcher = new System.DirectoryServices.DirectorySearcher();RootDSE=DSESearcher.SearchRoot.Path;MessageBox.Show("Searching for user Class in "+RootDSE);DirectoryEntry entry = new DirectoryEntry(RootDSE);System.DirectoryServices.DirectorySearcher mySearcher = new System.DirectoryServices.DirectorySearcher(entry);mySearcher.Filter = ("(ObjectClass=user)");System.DirectoryServices.SearchResult resEnt=mySearcher.FindOne();entry=resEnt.GetDirectoryEntry();System.Collections.IEnumerator en = entry.Properties.PropertyNames.GetEnumerator();while(en.MoveNext()){listBox1.Items.Add(en.Current.ToString());}}public void AddUser1(){string strDomain="";string RootDSE;System.DirectoryServices.DirectorySearcher DSESearcher = new System.DirectoryServices.DirectorySearcher();RootDSE=DSESearcher.SearchRoot.Path;MessageBox.Show(RootDSE);MessageBox.Show(RootDSE);MessageBox.Show(strDomain);DirectoryEntry myDE = new DirectoryEntry(RootDSE);DirectoryEntries myEntries = myDE.Children;// Create a new entry 'Sample' in the container.DirectoryEntry myDirectoryEntry = myEntries.Add("CN="+txtUserName.Text, "CB");MessageBox.Show(myDirectoryEntry.SchemaClassName.ToString());MessageBox.Show(myDirectoryEntry.Path.ToString());System.Collections.IEnumerator en = myDirectoryEntry.Properties.PropertyNames.GetEnumerator();while(en.MoveNext()){MessageBox.Show(en.Current.ToString());}myDirectoryEntry.CommitChanges();}
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