Getting Email address from Active Directory
asp.net, vb.net, webforms
Solution
Thanks to Davide Piras who send me this link, I found a suitable solution:
Dim wi As System.Security.Principal.WindowsIdentity = System.Security.Principal.WindowsIdentity.GetCurrent()
Dim a As String() = wi.Name.Split(New Char() {"\"c}) '' Context.User.Identity.Name.Split('\')
Dim dc As PrincipalContext = New PrincipalContext(ContextType.Domain, "DomainName")
Dim adUser As UserPrincipal = UserPrincipal.FindByIdentity(dc, a(1))
Dim Email As String = adUser.EmailAddress
Problem
All -- I am able to retieve the FullName value I am trying to retrieve an email address from Active Directory but using the following code in my ASP.Net Web Forms project that is using Windows Authentication: ``` Dim wi As System.Security.Principal.WindowsIdentity = System.Security.Principal.WindowsIdentity.GetCurrent() Dim a As String() = wi.Name.Split(New Char() {"\"c}) '' Context.User.Identity.Name.Split('\') Dim ADEntry As System.DirectoryServices.DirectoryEntry = New System.DirectoryServices.DirectoryEntry(Convert.ToString("WinNT://" + a(0) + "/" + a(1))) Dim Name As String = ADEntry.Properties("FullName").Value.ToString() Dim Email As String = ADEntry.Properties("mail").Value.ToString() ``` when I get to the line of code where I'm try to retrieve the email address I get an "Object reference not set to an instance of an object." error. I have tried using EmailAddress, E-Mail. I think the problem is that I am simply using the wrong keyword. I am able to retrieve the FullName value.