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I'm facing a problem with Sharepoint as I must change the Login name of my users. I'm in a claim based installation and I decide to use GUID as unique identifier.

By Sharepoint PowerShell I found how to do it and works.. How can I change it programmatically? LoginName properties seems to be read only!

Here's the way I rename it on Powershell:

Move-SPUser -Identity $User2 -NewAlias "i:05.t|saml provider|MYBASE65GUID==@DOMAIN.dom" -IgnoreSID

Anybody knows a way to do that programmatically in Sharepoint?

Thank you!

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3 Answers 3

See the ISPUserMigrator interface.

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Suggestion on how to use it? I can see no example over there! – Ziba Leah Oct 29 '12 at 19:25
up vote 1 down vote accepted

To modify the login name of an User I used the SPFarm object.

The code looks simple like this:

                using (SPSite elevatedSite = new SPSite(url))
                    using (SPWeb web = elevatedSite.OpenWeb())
                    foreach (Principal user in ps.FindAll()) //Searches the user in LDAP
                        if (user.UserPrincipalName == EmailUser)
                             var BASE64 = System.Convert.ToBase64String((user.Guid.Value).ToByteArray()); //Convert the guid in BASE64
                            SPUser mi = web.EnsureUser("i:05.t|saml provider|"+EmailUser); //get the user I want to change
                            SPFarm farm = SPFarm.Local; //get the local farm
                            farm.MigrateUserAccount(mi.LoginName, "i:05.t|saml provider|" + BASE64 + "@fakemail.dom", false);

In this way the user has a new LoginName as I wanted.

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This will create the user within SharePoint if it doesn't already exist (i.e. the user should be allowed access but hasn't actually visited the site).

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But I want to "rename" an user not to create! – Ziba Leah Oct 29 '12 at 16:45
Ah, I was confused, I thought you were trying to get an SPUser object given a login name. I will edit the title to make it clearer. – lgaud Oct 29 '12 at 17:45

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