Loading the active directory user and their associated Computers

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C#

active-directory

Hello Everyone i am trying to develop a program that will list will all the user of Active Directory and when i select one user the program should be able to show the computers associated with that user. i.e the Computers that are accessible to that AD user. I have written code to list all user but no idea how to list the computers associated with that user. Here is my code to load AD User into datatable:

DataTable dtUser= new DataTable();
    try
    {            
        DirectoryEntry dom = Domain.GetComputerDomain().GetDirectoryEntry();

        DirectorySearcher dsAllUsers = new DirectorySearcher(dom);
        dsAllUsers.SearchScope = SearchScope.Subtree;
        dsAllUsers.Filter = "(objectCategory=Person)";

        SearchResultCollection result = dsAllUsers.FindAll();
        dtUser.Columns.Add("CustodianName");
        dtUser.Columns.Add("Email");
        dtUser.Columns.Add("Title");
        dtUser.Columns.Add("Dept.");           

        foreach (SearchResult rs in result)
        {
            DataRow newRow = dtUser.NewRow();

            if (rs.GetDirectoryEntry().Properties["samaccountname"].Value != null)
                newRow["CustodianName"] = rs.GetDirectoryEntry().Properties["samaccountname"].Value.ToString();

            if (rs.GetDirectoryEntry().Properties["mail"].Value != null)
                newRow["Email"] = rs.GetDirectoryEntry().Properties["mail"].Value.ToString();

            if (rs.GetDirectoryEntry().Properties["title"].Value != null)
                    newRow["Title"] = rs.GetDirectoryEntry().Properties["title"].Value.ToString();

            if (rs.GetDirectoryEntry().Properties["department"].Value != null)
                newRow["Dept."] = rs.GetDirectoryEntry().Properties["department"].Value.ToString();

            dtUser.Rows.Add(newRow);
        }
        return dtUser;
    }
    catch (Exception)
    {
        throw;
    }