//Domain Name : EnergyFundersDemoB2C.onmicrosoft.com
DirectoryEntry myLdapConnection = new DirectoryEntry("LDAP://EnergyFundersDemoB2C.onmicrosoft.com");
DirectorySearcher search = new DirectorySearcher(myLdapConnection) { Filter = ("(objectClass=user)") };
search.CacheResults = true;
SearchResultCollection allResults = search.FindAll();
DataTable resultsTable = new DataTable();
resultsTable.Columns.Add("UserID");
resultsTable.Columns.Add("EmailID");
foreach (SearchResult searchResult in allResults)
{
MembershipUser myUser = Membership.GetAllUsers()[searchResult.Properties["sAMAccountName"][0].ToString()];
if (myUser == null)
{
DataRow dr = resultsTable.NewRow();
dr["UserID"] = searchResult.Properties["sAMAccountName"][0].ToString();
if (searchResult.Properties["mail"].Count > 0)
{
dr["EmailID"] = searchResult.Properties["mail"][0].ToString();
}
else
{
dr["EmailID"] = "";
}
resultsTable.Rows.Add(dr);
}
else
{ }
}
AllADUsers.DataSource = resultsTable;
AllADUsers.DataBind();