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Get sAMAccountName by Email from LDAP

/ Published in: C#
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Uses LDAP to find sAMAccountName by using the Email address.

Add System.DirectoryServices to references.

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  1. public static string GetSAMAccountNameByEmail(string email)
  2. {
  3.     var oroot = new System.DirectoryServices.DirectoryEntry("LDAP://INVESTOR_AB");
  4.     var osearcher = new System.DirectoryServices.DirectorySearcher(oroot);
  5.     osearcher.Filter = string.Format("(&(mail={0}))", email);
  6.     var oresult = osearcher.FindAll();
  7.  
  8.     if (oresult.Count == 0) throw new InvalidOperationException(string.Format("Cannot find mail {0} in LDAP.", email));
  9.     if (oresult.Count > 1) throw new InvalidOperationException(string.Format("There are {0} items with mail {1} in LDAP.", oresult.Count, email));
  10.  
  11.     return oresult[0].Properties["sAMAccountName"][0].ToString();
  12. }

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